Method for determining impurities in nickel electroforming molding tank liquor by adopting atomic absorption spectrometry
A kind of atomic absorption spectroscopy and atomic absorption technology, applied in the field of measurement, can solve the problem of difficulty in the determination of impurity content, and achieve the effect of accurate reaction
Inactive Publication Date: 2013-10-23
HARBIN
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Problems solved by technology
Since a certain amount of boric acid is added to the electroforming nickel bath, the nature of boric acid is that it is easy to precipitate and form crystals, which brings difficulty to the determination of impurity content.
Since there is no method for analyzing impurities in electroforming nickel forming bath at home and abroad
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[0036] Below in conjunction with embodiment technical solution of the present invention will be described in further detail:
[0037] The method of measuring impurities in electroforming nickel forming bath solution by atomic absorption spectrometry, the impurity elements refer to copper, iron, zinc,
[0038] It is characterized in that: the steps of the method are:
[0039] (1) Prepare a standard reagent solution for a single impurity element
[0040] Standard reagent solution A: Weigh 0.1000g of pure single impurity elements copper, iron, and zinc and place them in a 250mL beaker, the purity requirement is 99.99%. Hydrochloric acid 20mL, diluted with water to 1000mL mark, shake well;
[0041] Standard reagent solution B: Take 1.0 mL each of standard reagent solution A and place in a 100 mL volumetric flask, dilute with water to the 100 mL mark, and shake well;
[0042] (2) Set the working parameters of the instrument
[0043] The GGX-600AA atomic absorption spectrophotom...
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Abstract
The invention discloses a technology for determining the impurity content of a nickel electroforming molding tank liquor by adopting atomic absorption spectrometry. Materials are selected to provide data of impurity content for the nickel electroforming molding tank liquor contracted with the French party. The French party requires low impurity element content of the tank liquor, and boric acid which is easy to separate out for forming a crystal is added into the tank liquor, so that the impurity content is difficult to determine. In the invention, the mentioned problem is solved by adopting atomic absorption spectrometry. Repeated conditional experiments are performed on influence factors on the aspects of selection of apparatus working conditions, preparation of a working curve, preparation of a test solution, the influence of acidity, the elimination of interference, matching of light absorption intensity and element content, and the like, so that a set of complete analysis method is established. The content of impurity elements in the tank liquor can be measured accurately, so that reliable data are provided for the quality control of the molding technic process, and the molding quality of an anterior wrapping sheet is monitored effectively. The method has high sensitivity and high accuracy.
Description
technical field [0001] The invention relates to a method for measuring impurities in electroforming nickel forming bath liquid by means of atomic absorption spectrometry, and belongs to the field of measurement technology. Background technique [0002] Since nickel sulfamate is mainly used in the electroforming nickel forming process, the impurities contained in the bath liquid during the forming process affect the forming quality, so detecting whether the impurity elements: copper, iron, zinc content exceed the standard is the key to ensure nickel forming. Since a certain amount of boric acid is added to the electroforming nickel bath, the nature of boric acid is that it is easy to precipitate and form crystals, which brings difficulty to the determination of impurity content. Because there is no method for analyzing the impurities in electroforming nickel forming bath at home and abroad. Contents of the invention [0003] The present invention aims at the defects in the...
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IPC IPC(8): G01N21/31
Inventor 米晓东邓晓文金光慧
Owner HARBIN