The chemical analysis of copper with a purity of 99.75 percent to 99.95 percent is covered in ASTM E53-07. It also includes electrolytic copper determination in chemical, electrolytic, and fire refined copper. Silver is deposited with the copper in this process, and the result is reported as copper.
Scope:
ASTM E53-07 for the chemical analysis of copper is primarily used to test for compliance with compositional specifications.
Procedure
The copper is electrolytically deposited and weighed on a tarred platinum cathode after the sample is dissolved in an acid combination. Atomic absorption spectroscopy is used to determine how much copper is left in the electrolyte.
Specimen size:
300 mL of H2SO4 to 750 mL of H2O and 210 mL of HNO3 are used in the test method.
Result
Calculate the weight of deposited copper is calculated as follows:
Copper 5=A-B
Where:
A = weight of cathode plus deposited copper g and
B = weight of the cathode
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