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Method for determining chloride ion content

A technology of chloride ion content and determination method, applied in the field of chloride ion content determination, can solve the problems of being susceptible to interference, inaccurate detection of chloride ions, etc., and achieve the effect of good accuracy

Inactive Publication Date: 2019-05-21
JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a method for determining the content of chloride ions, which solves the problems of inaccurate and easily disturbed detection of existing chloride ions

Method used

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  • Method for determining chloride ion content
  • Method for determining chloride ion content
  • Method for determining chloride ion content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] S1: Take five 25ml volumetric flasks, add 5.00ml of ethylene glycol, 2.00ml of silver nitrate, and 5.00ml of imitation electrolyte, and shake well.

[0031] S2: Add different volumes of 100ppm chloride ion standard solution to the above five volumetric flasks, the addition amounts are 0ml, 0.25ml, 0.50ml, 0.75ml, 1.00ml respectively, shake to a constant volume, let stand for 1 hour, and 0ml As a blank sample, the initial concentrations of chloride ions in the volumetric flask were 0ppm, 1ppm, 2ppm, 3ppm, and 4ppm, respectively.

[0032] S3: Pour the above five samples into 10ml cuvettes respectively, measure the absorbance of each sample at a wavelength of 420nm with a spectrophotometer single-wavelength method, and perform linear fitting on the absorbance-concentration value to obtain a standard curve and correct the curve The coefficient of determination is 0.9999, and the linear relationship is very good, indicating that the standard curve is qualified, and the obtai...

Embodiment 2

[0036] S1: Take five 25ml volumetric flasks, add 5.00ml of ethylene glycol, 2.00ml of silver nitrate, and 5.00ml of imitation electrolyte, and shake well.

[0037] S2: Add different volumes of 100ppm chloride ion standard solution to the above five volumetric flasks, the addition amounts are 0ml, 0.25ml, 0.50ml, 0.75ml, 1.00ml respectively, shake to a constant volume, let stand for 1 hour, and 0ml As a blank sample, the initial concentrations of chloride ions in the volumetric flask were 0ppm, 1ppm, 2ppm, 3ppm, and 4ppm, respectively.

[0038] S3: Pour the above five samples into 10ml cuvettes respectively, measure the absorbance of each sample at a wavelength of 420nm with a spectrophotometer single-wavelength method, and perform linear fitting on the absorbance-concentration value to obtain a standard curve and correct the curve The coefficient of determination is 0.9997, and the linear relationship is very good, indicating that the standard curve is qualified, and the obtai...

Embodiment 3

[0042] S1: Take five 25ml volumetric flasks, respectively add 5.00ml of ethylene glycol, 2.00ml of silver nitrate, and 5.00ml of imitation electrolyte and shake well.

[0043] S2: Add different volumes of 100ppm chloride ion standard solution to the above five volumetric flasks, the addition amounts are 0ml, 0.25ml, 0.50ml, 0.75ml, 1.00ml respectively, constant volume shake well, let it stand for 1h, and 0ml As a blank sample, the initial concentrations of chloride ions in the volumetric flask were 0ppm, 1ppm, 2ppm, 3ppm, and 4ppm, respectively.

[0044]S3: Pour the above five samples into 10ml cuvettes respectively, measure the absorbance of each sample at a wavelength of 420nm with a spectrophotometer single-wavelength method, and perform linear fitting on the absorbance-concentration value to obtain a standard curve and correct the curve The coefficient of determination is 0.9997, and the linear relationship is very good, indicating that the standard curve is qualified, and...

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Abstract

The invention discloses a method for determining chloride ion content. The method specifically comprises the following steps of S1, preparing a silver chloride standard solution: respectively adding ethylene glycol, silver nitrate solution, imitation electrolyte and chloride standard solution into five volumetric flasks of 25ml, shaking the volumetric flasks after constant volume for static reaction to form silver chloride turbid liquid; S2, measuring absorbance by a spectrophotometer, linearly fitting the absorbance-concentration value to obtain a standard curve; S3, taking two volumetric flasks, adding ethylene glycol, silver nitrate and the solution under test to one of the volumetric flasks, shaking the volumetric flask after constant volume for static reaction, and adding ethylene glycol, silver nitrate and imitation electrolyte to the other volumetric flask, and shaking the volumetric flask after constant volume for blank experiment; and S4, obtaining the content of chloride ionin the liquid under test by using the spectrophotometer and combining the standard curve in the step S2, and further calculating the actual chloride ion content. The method has the beneficial effectsof good accuracy, stability and simplicity without being interfered by other ions in the electrolyte.

Description

technical field [0001] The invention relates to a method for determining the content of chloride ions, in particular to a method for determining the content of chloride ions in electrolyte solution and diatomite. Background technique [0002] In the production of electrolytic copper foil, the content of chloride ions in the electrolyte is very low, and chloride ions play an extremely important role when copper ions are reduced to copper from the cathode. In sulfate baths, chloride ions can reduce anodic polarization and eliminate plating streaks in areas of high current density. Studies have found that if the content of chloride ions in the electrolyte is too small, a coating with high leveling performance and good brightness cannot be obtained. Chloride ions can promote the deposition of copper ions, and increasing the concentration of chloride ions will help increase the reduction current of copper ions. . However, the concentration of chloride ions should not be too hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 马科罗佳江泱范远朋胡凯
Owner JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD