Electroplating solution detection and analysis kit

Abstract

The invention relates to the technical field of solution analysis, discloses an electroplating solution detection and analysis kit and a detection method, and is suitable for field detection of medium and small electroplating enterprises. The medicine box integrates special reagents, simple instruments and the like, contains a glass conical flask, a multi-specification injector, a clamp shear, an additive, a titrant, an optional electric furnace, a funnel, filter paper and other components, and is equivalent to a mobile miniature laboratory; the detection method comprises the following steps: diluting a plating solution to be detected, adding an additive, dropwise adding a titrant until the color of the solution changes suddenly, and comparing the consumption volume of the titrant with the content of the plating solution to quickly look up the table so as to obtain the component content, so that complex equipment and professional background are not needed, the detection is completed within several minutes at normal temperature, and the efficiency is high. Through anti-interference optimization and correction logic, the main salt component in the plating solution can be accurately and quantitatively detected, the problems of high cost, low precision and incomplete monitoring of traditional detection are solved, and the quality management cost of an enterprise is reduced.

Description

Technical Field

[0001] This invention relates to the field of solution analysis technology, and more specifically to a kit for detecting and analyzing electroplating solutions. Background Technology

[0002] In the electroplating process, the content of main salts (such as zinc oxide, nickel sulfate, and copper sulfate) and auxiliary components (such as total alkali, sodium carbonate, and boric acid) in the plating bath are the core process parameters that determine the quality of the plating layer. Deviations in the main salt content from the normal range will directly lead to a series of quality problems such as rough plating, scorching, poor adhesion, and abnormal deposition rates. Excessive accumulation of auxiliary components such as sodium carbonate will reduce the dispersing ability of the plating bath and cause pinhole defects in the plating layer. Therefore, regular quantitative testing of multiple components in the plating bath is a necessary step in electroplating quality control.

[0003] Currently, the detection of plating solution components mainly relies on two types of technical means: The first type is standard chemical analysis methods. These methods require various laboratory equipment such as analytical balances, burettes, volumetric flasks, heating equipment, and filtration devices. The operation process is cumbersome, requiring not only high professional knowledge and skills from operators but also specialized laboratory personnel. For small and medium-sized electroplating enterprises, the cost of establishing and maintaining standardized laboratories is high and unaffordable. In actual production, these enterprises are often forced to abandon quantitative detection and rely solely on experience to observe and adjust the plating solution, resulting in poor product quality stability. The second type is existing rapid detection methods, such as test strips and simplified colorimetric methods. Although they have the advantages of portability and ease of operation, their detection accuracy is low, they are easily affected by other ions in the plating solution, and their detection range is narrow. They can usually only detect pH value or a single ion, which cannot meet the needs of simultaneous quantitative analysis of multiple components in the plating solution, nor can they cover the detection of key auxiliary components such as sodium carbonate. This results in incomplete monitoring of the plating solution, and the test results cannot guide actual production.

[0004] Therefore, the industry urgently needs an integrated, portable, easy-to-operate, and accurate rapid testing tool that meets production requirements to solve the pain points of small and medium-sized electroplating enterprises in detecting and monitoring the composition of plating solutions. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an electroplating solution detection and analysis kit. This kit integrates the specialized reagents, simple instruments, and standardized operating procedures required for detection into one unit. Without the need for complex equipment or professional background, operators can quickly complete the quantitative detection of various main salt components in electroplating solutions on the production site.

[0006] The technical solution provided by this invention is as follows:

[0007] In a first aspect, the present invention provides a detection and analysis kit for electroplating solutions, the kit containing:

[0008] A glass conical flask, three syringes, a pair of scissors, additives, and titrant.

[0009] Furthermore, the medicine box also contains: an electric stove, a funnel, and filter paper.

[0010] Furthermore, the additives are C-01, C-11, C-12, B-15, Z-05, Z-11, Z-16, and Z-17.

[0011] Furthermore, C-01 is a solution prepared from ammonium chloride and ammonia, with a molar concentration of 1 mol / L for ammonium chloride and a pH of 10.

[0012] C-11, by volume percentage, consists of the following components: 50% glycerol, 10% mannitol, 3.2% potassium oxalate, 2.5% methyl red indicator, 2.5% phenolphthalein indicator, and the balance being water;

[0013] C-12, by volume percentage, consists of the following components: 7% potassium oxalate, 10% glycerol, 15% mannitol, 2.5% methyl red indicator, 2.5% phenolphthalein indicator, and the balance being water;

[0014] B-15 is a 0.1M potassium chromate aqueous solution;

[0015] Z-05 is ammonium purpurate;

[0016] Z-11 is a PAN indicator;

[0017] Z-16 is a methyl orange indicator;

[0018] Z-17 is a phenolphthalein indicator.

[0019] Furthermore, the titrant is D-10, D-14, D-16, D-17, D-20, D-23 and D-38.

[0020] Furthermore, D-10 is a sodium hydroxide solution with an equivalent concentration of 0.1N;

[0021] D-14 is an EDTA solution with an equivalent concentration of 0.1N;

[0022] D-16 is an EDTA solution with an equivalent concentration of 0.03N;

[0023] D-17 is a silver nitrate solution with an equivalent concentration of 0.5N;

[0024] D-20 is a silver nitrate solution with an equivalent concentration of 0.025N;

[0025] D-23 is a hydrochloric acid solution with an equivalent concentration of 0.6N;

[0026] D-38 is a hydrochloric acid solution with an equivalent concentration of 0.2N.

[0027] Furthermore, the volumes of the three syringes are 10ml, 5ml, and 1ml, respectively.

[0028] Secondly, the present invention provides a detection method for the above-mentioned electroplating solution detection and analysis kit, comprising the following steps:

[0029] S1. Liquid collection procedure

[0030] Take 1 mL or 0.1 mL of the plating solution to be tested from the workshop, use a 1 mL syringe to draw 1 mL, place it in a glass conical flask, add 45-55 mL of production water, and shake well.

[0031] S2. Add steps

[0032] Add the additive to the glass conical flask from step S1 and shake well;

[0033] S3. Titration Procedure

[0034] Take the syringe from the medicine box, accurately draw up the titrant, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask suddenly changes, stop adding the titrant immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0035] S4. Table Lookup Steps

[0036] The volume of titrant consumed is obtained by subtracting the initial volume of titrant from the remaining volume of titrant. This volume is then compared with a quick reference table of electroplating solution content to obtain the corresponding main salt content.

[0037] The beneficial effects of this invention are:

[0038] 1. The electroplating solution detection and analysis kit provided by this invention integrates all the necessary items for testing into a portable box, which is equivalent to a mobile miniature laboratory, suitable for on-site use in the workshop; and most of the test items do not require time-consuming steps such as heating, filtering, and weighing, and a test can be completed within a few minutes at room temperature and pressure, which is much more efficient than traditional methods.

[0039] 2. The standardized process of liquid collection-addition-titration-table lookup is adopted, which does not require professional background of the operator. As long as the operator can read and distinguish colors, he / she can operate the machine, which greatly reduces the threshold for use and significantly reduces the quality management cost of small and medium-sized enterprises.

[0040] 3. By designing a special additive and titrant system, anti-interference optimization was carried out for the complex electroplating solution system, ensuring the accuracy and practicality of the detection. In particular, the present invention provides a simple detection method for sodium carbonate (in zincate zinc plating solution), which is often overlooked in the past. In addition, by setting detection steps for specific ions and introducing correction calculation logic, the present invention has successfully achieved accurate quantification of multiple coexisting main salt components in electroplating compound solutions. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. It should be noted that, unless otherwise specified, all chemical reagents involved in this invention are purchased through commercial channels.

[0042] The following are specific embodiments of the present invention.

[0043] Example 1: Analysis and Testing of Zincate Plating Solution

[0044] (1) Determination of zinc oxide

[0045] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0046] S2. Addition steps: Add additives C-01 and Z-11 to the glass conical flask and shake well;

[0047] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-16, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from light red to yellow, stop adding the titrant immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0048] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare and analyze this with the quick reference table of electroplating solution content (Table 1) to obtain the zinc oxide content.

[0049] Table 1 Quick Reference Table of Zinc Oxide Content in Electroplating Solution

[0050] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 1.25-3.0 2.25-5.5 3.25-7.9 4.25-10.4 5.25-12.8 1.5-3.7 2.5-6.1 3.5-8.5 4.5-11.0 5.5-13.4 1.75-4.3 2.75-6.7 3.75-9.1 4.75-11.6 5.75-14.0 2.0-4.9 3.0-7.3 4.0-9.8 5.0-12.2 6.0-14.6

[0051] (2) Determination of total alkali

[0052] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0053] S2. Addition steps: Add additive Z-17 to the glass conical flask and shake well;

[0054] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-23, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from light red to colorless, stop adding immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0055] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare and analyze this with the quick reference table of electroplating solution content (Table 2) to obtain the total alkali content.

[0056] Table 2 Quick Reference Table for Total Alkali Content in Electroplating Solution

[0057] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.5-12 2.5-60 4.5-108 6.5-156 8.5-204 1.0-2.4 3.0-72 5.0-120 7.0-168 9.0-216 1.5-36 3.5-84 5.5-132 7.5-180 9.5-228 2.0-48 4.0-96 6.0-144 8.0-192 10.0-240

[0058] (3) Determination of sodium carbonate

[0059] No sampling is required. After measuring the total alkali, do not discard the solution in the glass conical flask. No further sampling is needed. Directly measure the sodium carbonate content.

[0060] S1. Addition steps: Add additive Z-16 to the glass conical flask after measuring the total alkali content, and shake well;

[0061] S2. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-38, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from yellow to orange-red, stop adding immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0062] S3. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare this volume with the quick reference table for electroplating solution content (Table 3) to obtain the sodium carbonate content.

[0063] Previously, the detection of sodium carbonate content was mostly overlooked, with only sodium hydroxide being measured. However, the presence of sodium carbonate in the solution led to false alkalinity in the zincate zinc plating test results. Especially when sodium carbonate content was ≥80g / L, it increased the internal resistance of the plating solution, accelerated the temperature rise, and lowered the upper limit of the current density. In existing electroplating testing processes, the detection of sodium carbonate sometimes required boiling, filtration, or multiple additions, which was cumbersome. Therefore, the detection of sodium carbonate was often overlooked. Using the electroplating solution detection and analysis kit provided by this invention, the sodium carbonate content can be measured by adding only additives and titrants. This is a new technology that is different from other testing methods.

[0064] Table 3 Quick Reference Table for Sodium Carbonate Content in Electroplating Solution

[0065] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.25-15.9 1.25-79.5 2.25-143 3.25-207 4.25-270 0.5-31.8 1.5-95.4 2.5-159 3.5-223 4.5-286 0.75-47.7 1.75-111 2.75-175 3.75-239 4.75-302 1.0-63.6 2.0-127 3.0-191 4.0-254 5.0-318

[0066] Example 2: Testing and analysis of ordinary nickel plating solution

[0067] (1) Determination of nickel sulfate

[0068] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0069] S2. Addition steps: Add additives C-01 and Z-05 to the glass conical flask and shake well;

[0070] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-14, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask changes from light blue to purplish red, stop adding the titrant immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0071] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare and analyze this with the quick reference table of electroplating solution content (Table 4) to obtain the nickel sulfate content. Then subtract the nickel chloride content measured below to finally obtain the actual nickel sulfate content.

[0072] The nickel plating solution is a compound solution containing two nickel salts, nickel sulfate and nickel chloride. Since measuring nickel sulfate measures the nickel content (nickel ions) and measuring nickel chloride measures the chloride ions, the total nickel content is obtained when measuring nickel sulfate. The nickel chloride content must be subtracted. Therefore, in this embodiment, the actual nickel sulfate content is obtained by subtracting the nickel chloride content from the measured nickel sulfate content.

[0073] Table 4 Quick Reference Table for Nickel Sulfate Content in Electroplating Solution

[0074] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.5-14.9 2.5-70 4.5-126 6.5-182 8.5-238 1.0-28.0 3.0-84 5.0-140 7.0-196 9.0-252 1.5-42 3.5-98 5.5-154 7.5-210 9.5-266 2.0-56 4.0-112 6.0-168 8.0-224 10.0-280

[0075] (2) Determination of chloride (nickel chloride or sodium chloride)

[0076] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0077] S2. Addition steps: Add additive B-15 to the glass conical flask and shake well;

[0078] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up the titrant D-20, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask changes from yellow turbidity to orange-red turbidity, stop adding the titrant immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0079] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). If the plating solution contains nickel chloride, compare it with the quick reference table of electroplating solution content (Table 5) to obtain the nickel chloride content. If the plating solution contains sodium chloride, compare it with the quick reference table of electroplating solution content (Table 6) to obtain the sodium chloride content.

[0080] Table 5 Quick Reference Table of Nickel Chloride Content in Electroplating Solution

[0081] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.5-6.0 2.5-29.8 4.5-53.6 6.5-77.4 8.5-101.2 1.0-11.9 3.0-35.7 5.0-59.5 7.0-83.3 9.0-107.1 1.5-17.9 3.5-41.7 5.5-65.5 7.5-89.3 9.5-113.1 2.0-23.8 4.0-47.6 6.0-71.4 8.0-95.2 10.0-119

[0082] Table 6 Quick Reference Table of Sodium Chloride Content in Electroplating Solution

[0083] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 3.25-9.5 4.25-12.4 5.25-15.3 6.25-18.3 7.25-21.2 3.5-10.2 4.5-13.2 5.5-16.1 6.5-19.0 7.5-21.9 3.75-11.0 4.75-13.9 5.75-16.8 6.75-19.7 7.75-22.7 4.0-11.7 5.0-14.6 6.0-17.5 7.0-20.5 8.0-23.4

[0084] (3) Determination of boric acid

[0085] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0086] S2. Addition steps: Add additive C-11 to the glass conical flask and shake well;

[0087] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-10, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask changes from yellow to light red, stop adding immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0088] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare this volume with the quick reference table for electroplating solution content (Table 7) to obtain the boric acid content.

[0089] Table 7 Quick Reference Table of Boric Acid Content in Electroplating Solution

[0090] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 3.25-20.8 4.25-26.1 5.25-32.3 6.25-38.4 7.25-44.6 3.5-21.4 4.5-27.6 5.5-33.8 6.5-40.0 7.5-46.2 3.75-23.0 4.75-29.2 5.75-35.3 6.75-41.5 7.75-47.7 4.0-24.5 5.0-30.7 6.0-36.9 7.0-43.1 8.0-49.3

[0091] Example 3: Analysis and Testing of Sulfate Copper Plating Solution

[0092] (1) Determination of copper sulfate

[0093] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0094] S2. Addition steps: Add additive C-01 to the glass conical flask and shake well;

[0095] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-14, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask changes from blue to green, stop adding the titrant immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0096] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare and analyze this with the quick reference table of electroplating solution content (Table 8) to obtain the copper sulfate content.

[0097] Table 8 Quick Reference Table for Copper Sulfate Content in Electroplating Solution

[0098] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 1.5-12.5 2.5-62.5 4.5-113 6.5-163 8.5-213 1.0-25 3.0-75 5.0-125 7.0-175 9.0-225 1.5-37.5 3.5-87.5 5.5-138 7.5-188 9.5-238 2.0-50 4.0-100 6.0-150 8.0-200 10.0-250

[0099] (2) Determination of sulfuric acid

[0100] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0101] S2. Addition steps: Add additive Z-16 to the glass conical flask and shake well;

[0102] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-10, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask changes from orange-red to bright yellow, stop adding immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0103] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare this volume with the quick reference table for electroplating solution content (Table 9) to obtain the sulfuric acid content.

[0104] Table 9 Quick Reference Table of Sulfuric Acid Content in Electroplating Solution

[0105] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.5-4.9 2.5-24.5 4.5-44.1 6.5-63.7 8.5-83.3 1.0-9.8 3.0-29.4 5.0-49.0 7.0.-68.6 9.0-88.2 1.5-14.7 3.5-34.3 5.5-53.9 7.5-73.5 9.5-93.1 2.0-19.6 4.0-39.2 6.0-58.8 8.0-78.4 10.0-98.0

[0106] Example 4: Analysis and Testing of Chloride Zinc Plating Solution

[0107] (1) Determination of chloride (potassium chloride or sodium chloride)

[0108] S1. Liquid collection procedure: Use a 1mL syringe to draw 0.1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0109] S2. Addition steps: Add additive B-15 to the glass conical flask and shake well;

[0110] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-17, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from turbid yellow to orange-red, stop adding the titrant immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0111] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Then, subtract 1 / 5 of the volume of titrant consumed for zinc chloride determination (e.g., if 3 mL of titrant is consumed for zinc chloride, subtract 0.6 mL). Compare this with the quick reference tables for electroplating solution content (Tables 10 and 11) to obtain the actual potassium chloride or sodium chloride content.

[0112] The chloride zinc plating solution is a mixed compound solution containing potassium chloride, sodium chloride, and zinc chloride. When measuring zinc chloride, zinc ions are measured, and when measuring chloride, chloride ions are measured. In this case, the total amount of chloride is measured. Therefore, when measuring potassium chloride or sodium chloride, the content of zinc chloride must be subtracted.

[0113] Table 10 Quick Reference Table of Potassium Chloride Content in Electroplating Solution

[0114] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.25-9.4 1.25-46.6 2.25-83.9 3.25-121.2 4.25-158.5 0.5-18.7 1.5-56.0 2.5-93.2 3.5-130.5 4.5-167.8 0.75-28.0 1.75-65.3 2.75-102.6 3.75-139.8 4.75-177.1 1.0-37.3 2.0-74.6 3.0-111.9 4.0-149.2 5.0-186.4

[0115] Table 11 Quick Reference Table of Sodium Chloride Content in Electroplating Solution

[0116] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.25-7.4 1.25-36.6 2.25-65.9 3.25-95.1 4.25-124.4 0.5-15.0 1.5-43.9 2.5-73.2 3.5-102.4 4.5-131.7 0.75-22.0 1.75-51.2 2.75-80.5 3.75-109.7 4.75-139.0 1.0-29.3 2.0-58.5 3.0-87.8 4.0-117.0 5.0-146.3

[0117] (2) Determination of zinc chloride

[0118] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0119] S2. Addition steps: Add additives C-01 and Z-11 to the glass conical flask and shake well;

[0120] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-14, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from pink to yellow, stop adding the titrant immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0121] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare this volume with the quick reference table for electroplating solution content (Table 12) to obtain the zinc chloride content.

[0122] Table 12 Quick Reference Table of Zinc Chloride Content in Electroplating Solution

[0123] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 1.25-17.0 3.25-44.2 4.25-57.9 5.25-71.6 6.25-85.2 1.5-20.4 3.5-47.6 4.5-61.3 5.5-74.9 6.5-88.5 1.75-23.2 3.75-51.0 4.75-64.7 5.75-78.3 6.75-92.0 2.0-27.2 4.0-54.4 5.0-68.1 6.0-81.8 7.0-95.4

[0124] (3) Determination of boric acid

[0125] S1. Liquid collection procedure: Use a 1mL syringe to draw 1mL of the plating solution to be tested, place it in a glass conical flask, add 50mL of production water, and shake well;

[0126] S2. Addition steps: Add additive C-12 to the glass conical flask and shake well;

[0127] S3. Titration procedure: Take a 10mL syringe from the medicine box, accurately draw up titrant D-10, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant dropwise into the glass conical flask. When the color of the solution in the flask changes from pink to bright yellow and then to light red, stop adding the titrant immediately. This is considered the endpoint. Record the volume of titrant remaining in milliliters.

[0128] S4. Table lookup steps: Subtract the initial volume of titrant from the remaining volume of titrant to obtain the volume of titrant consumed (consumption). Compare and analyze this with the quick reference table of electroplating solution content (Table 13) to obtain the boric acid content.

[0129] Table 13 Quick Reference Table of Boric Acid Content in Electroplating Solution

[0130] Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) Consumption (mL) - Content (g / L) 0.5-2.9 2.5-15.3 4.5-27.6 6.5-40.0 8.5-52.3 1.0-6.0 3.0-18.3 5.0-30.7 7.0-43.1 9.0-55.4 1.5-9.1 3.5-21.4 5.5-33.8 7.5-46.2 9.5-58.5 2.0-12.2 4.0-24.5 6.0-36.9 8.0-49.3 10.0-61.6

[0131] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An electroplating solution detection and analysis kit, characterized in that, The medicine box contains: A glass conical flask, three syringes, a pair of scissors, additives, and titrant.

2. The electroplating solution detection and analysis kit according to claim 1, characterized in that, The medicine box also contains: an electric stove, a funnel, and filter paper.

3. The electroplating solution detection and analysis kit according to claim 1, characterized in that, The additives are C-01, C-11, C-12, B-15, Z-05, Z-11, Z-16 and Z-17.

4. The electroplating solution detection and analysis kit according to claim 3, characterized in that, C-01 is a solution prepared from ammonium chloride and ammonia, with a molar concentration of 1 mol / L for ammonium chloride and a pH of 10. C-11, by volume percentage, consists of the following components: 50% glycerol, 10% mannitol, 3.2% potassium oxalate, 2.5% methyl red indicator, 2.5% phenolphthalein indicator, and the balance being water; C-12, by volume percentage, consists of the following components: 7% potassium oxalate, 10% glycerol, 15% mannitol, 2.5% methyl red indicator, 2.5% phenolphthalein indicator, and the balance being water; B-15 is a 0.1M potassium chromate aqueous solution; Z-05 is ammonium purpurate; Z-11 is a PAN indicator; Z-16 is a methyl orange indicator; Z-17 is a phenolphthalein indicator.

5. The electroplating solution detection and analysis kit according to claim 1, characterized in that, The titrants are D-10, D-14, D-16, D-17, D-20, D-23 and D-38.

6. The electroplating solution detection and analysis kit according to claim 5, characterized in that, D-10 is a sodium hydroxide solution with an equivalent concentration of 0.1N; D-14 is an EDTA solution with an equivalent concentration of 0.1N; D-16 is an EDTA solution with an equivalent concentration of 0.03N; D-17 is a silver nitrate solution with an equivalent concentration of 0.5N; D-20 is a silver nitrate solution with an equivalent concentration of 0.025N; D-23 is a hydrochloric acid solution with an equivalent concentration of 0.6N; D-38 is a hydrochloric acid solution with an equivalent concentration of 0.2N.

7. The electroplating solution detection and analysis kit according to claim 1, characterized in that, The three syringes have volumes of 10 mL, 5 mL, and 1 mL, respectively.

8. The detection method for the electroplating solution detection and analysis kit as described in claims 1-7, characterized in that, Includes the following steps: (1) Liquid collection steps Take 1 mL or 0.1 mL of the plating solution to be tested from the workshop, use a 1 mL syringe to draw 1 mL, place it in a glass conical flask, add 45-55 mL of production water, and shake well. (2) Add steps Add the additive to the glass conical flask from step (1) and shake well; (3) Titration steps Take the syringe from the medicine box, accurately draw up the titrant, and record the initial volume of titrant in milliliters. Hold the syringe in your left hand and the glass conical flask in your right hand, and add the titrant drop by drop into the glass conical flask. When the color of the solution in the flask suddenly changes, stop adding the titrant immediately, which is considered the endpoint. Record the volume of titrant remaining in milliliters. (4) Table lookup steps The volume of titrant consumed is obtained by subtracting the initial volume of titrant from the remaining volume of titrant. This volume is then compared with a quick reference table of electroplating solution content to obtain the corresponding main salt content.

9. The application of the electroplating solution detection and analysis kit as described in claims 1-7 in the testing and analysis of zincate zinc plating solutions, ordinary nickel plating solutions, sulfate copper plating solutions, or chloride zinc plating solutions.