Method for detecting ammonium sulfate and glycine content in sulfate black liquid

A technology of sulfate blackening solution and detection method, which is applied in the field of detection of ammonium sulfate and glycine content in sulfate blackening solution, can solve the problems of affecting detection, complicated steps, inaccurate detection results, etc., and reduce the intermediate calculation process , the results are accurate and stable, and the method steps are simple

Active Publication Date: 2016-12-07
中色正锐(山东)铜业有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the detection of glycine can use the formaldehyde method, which is the same as the detection procedure of ammonium sulfate, because both react with formaldehyde and interfere with each other; the other is the non-aqueous perchloric acid titration method, which is the detection method in the national standard, but this method is applicable For glycine solids, glycine solution detection is not applicable; there is no good solution for the above defects
[0007] At present, in the high-precision rolled copper foil processing industry, the properties of ammonium sulfa...

Method used

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  • Method for detecting ammonium sulfate and glycine content in sulfate black liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Take a sample of 10ml blackening solution, place it in a 100ml beaker, and add a few drops of phenolphthalein, drop with 0.2mol / L sodium hydroxide solution to light red, then add 15ml of neutral formaldehyde, shake well, stand for 5 minutes, use 0.1 Titration of mol / L sodium hydroxide standard solution to colorless is the end point, and the total volume V of sodium hydroxide standard solution consumed by ammonium sulfate and glycine is obtained total .

[0063] Then take a sample of 1ml blackening solution, add it to a 1000ml volumetric flask, and use ICP to detect the concentration of Cu, Co metal ions and sulfate in the sulfate blackening solution; then use the principle of conservation of charge to calculate the ammonium sulfate from the obtained data The concentration of ammonium ion in the middle, and the concentration of ammonium sulfate C is further calculated Ammonium Sulfate And ammonium sulfate consumes 0.1mol / L sodium hydroxide standard solution volume V Ammoni...

Embodiment 2

[0065] Example 2 Precision and accuracy experiment

[0066] Precision refers to the degree to which the results of repeated measurements are consistent with each other under the same conditions. The degree of precision is expressed by relative standard deviation. The smaller the deviation, the higher the precision.

[0067] Use analytically pure ammonium sulfate, analytically pure glycine, metal copper, and metal cobalt to prepare a blackening sulfate solution, wherein the standard concentration of ammonium sulfate is 100g / l and the standard concentration of glycine is 100g / l.

[0068] Using the method provided by the present invention, the same sample of the above-prepared sulfate blackening solution was measured in parallel 4 times, and then the relative standard deviation of the measurement result was calculated, as described in Table 1.

[0069] Table 1 Accuracy and accuracy detection results of the embodiments of the present invention

[0070]

[0071] Since none of the existing de...

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Abstract

The invention provides a method for detecting ammonium sulfate and glycine content in sulfate black liquid. According to the invention, a formaldehyde titration method is employed for detecting total content of ammonium sulfate and a sodium hydroxide standard solution consumed by glycine, an auxiliary spectrum method for a principle of charge conservation is employed for detecting the ammonium sulfate content in a sample and the content of the sodium hydroxide standard solution consumed by ammonium sulfate, and finally the content of glycine can be calculated by a subtractive method. The method can accurately detect two substances of ammonium sulfate and glycine in the sulfate black liquid with one-time detection, the detection method can detect the other necessary test items in the black liquid, the detection time of the black liquid is saved, the detection efficiency is obviously increased, the detection result can be calculated by employing data processing software, the intermediate calculating processes are greatly reduced, the processes are simple, detection time is short, result is accurate and stable, and the high frequency medicine detection requirements in high-precision calendering copper foil anaphase surface treatment can be completely satisfied.

Description

Technical field [0001] The invention relates to the technical field of surface treatment of high-precision rolled copper foil, in particular to a method for detecting the content of ammonium sulfate and glycine in a sulfate blackening solution. Background technique [0002] Rolled copper foil is the process of smelting copper into ingots, then hot-rolling billets, roughing and finishing rolling into copper foil base material of 0.1mm ~ 0.15mm, and finally repeated rolling by copper foil rolling mill. The thickness is usually 6 μm to 70 μm. Therefore, the crystalline structure of rolled copper foil is a sheet structure, which is superior to electrolytic copper foil in terms of strength and toughness. In addition, the calendered copper foil has a higher density and a smoother surface, which is more conducive to the rapid transmission of signals behind the circuit board. It has a wide range of applications on high-frequency, high-speed transmission and fine circuit printed circuit ...

Claims

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Application Information

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IPC IPC(8): G01N31/16G01N21/71
CPCG01N21/71G01N31/16
Inventor 任启山姜业欣陈宾李学帅孙庆安田原晨朱清涛
Owner 中色正锐(山东)铜业有限公司
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