Method for detecting content of chloridion in electrodeposition solution of electrolytic copper foil by flow injection analysis method
A technology of chloride ion content and flow injection, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems such as the inconvenience of chloride ion analysis, and achieve the effect of low cost, high sensitivity and simple operation
Active Publication Date: 2019-09-10
CHANGZHOU UNIV
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Problems solved by technology
[0006] The problem to be solved in the present invention is to provide a low-cost, simple-to-operate, and rapid method for detecting chloride ions in copper electrolytes aimed at the many inconveniences in the analysis of chloride ions in the existing acidic copper electrolyte
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[0024] (1) Preparation of Ag reaction column
[0025] Silver powder with a particle size of about 300 μm is used as the filling material, and it is filled into a glass tube with a diameter of 5 mm and a length of 20 mm, and the two ends are drawn out with polytetrafluoroethylene pipes.
[0026] (2) Analysis and detection device
[0027] Place the reaction column in front of the visible spectrophotometer, and set the analysis wavelength of the detector;
[0028] (3) preparation of different concentration chloride ion standard solutions
[0029] Chloride ion analysis by flow injection method, preparation of 10g / L CuSO 4 ·5H 2 O and 10g / L H 2 SO 4 The solution of potassium chloride is used as the mobile phase, and the potassium chloride solid is accurately weighed, and a 1000 mg / L chloride ion solution is prepared with deionized water, and the chloride ion solution is added to the solution of sulfuric acid and copper sulfate as the mobile phase to obtain a 1.0-10 mg / L one A...
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Abstract
The invention provides a method for detecting content of chloridion in electrodeposition solution of an electrolytic copper foil by a flow injection analysis method. The method is characterized by comprising the following steps of: (1) using silver powder with a particle size of about 300 [mu]m as a filling material of a reaction column, wherein the reaction column is a glass tube with a diameterof 5mm and a length of 20mm; (2) preparing different concentrations of chloridion standard solution by adopting the flow injection analysis method, wherein flowing phases of chloridion is 10g / L of CUSO4.5H2O and 10g / L of H2SO4, and flow rates of the flowing phases are 10ml / min; and (3) using an ultraviolet / visible spectrophotometer as a detector, wherein a detection wavelength is 420nm. The methodhas a detection range of 1.0 to 10mg / L and a lowermost detection limit of 0.1mg / L. The method has the beneficial effects of simple operation method, high sensitivity and good selectivity.
Description
technical field [0001] The invention relates to a method for detecting chloride ions in the copper sulfate electrolyte of electrolytic copper foil, which is suitable for the determination of chloride ion content in the electroplating copper process of copper sulfate salt, in particular to a reaction column with silver powder as the filling material, quantitative A Flow Injection Analytical Method for the Detection of Chloride Ions in Copper Electrolytes. Background technique [0002] The copper electrodeposition solution for manufacturing electrolytic copper foil is mainly acidic copper sulfate solution. Chloride ions are an indispensable component in the acidic copper electrodeposition solution, and its allowable concentration is in the range of 20-80mg / L. Although chlorine The concentration of ions is very low, but it has a great influence on the electrodeposition of copper foil, so it is particularly important to accurately quantify the chloride ions in the acidic copper ...
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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 王文昌许程轶陈智栋
Owner CHANGZHOU UNIV