Error analysis of measurements of main salt content in copper electroplate baths by fluorescence spectrometry
The fluorescence spectrum curves were calibrated by the non-standard sample method,and then the main salt Cu2+content of the acid copper sulfate bath and the HEDP complex copper bath was analyzed by the calibrated curve rapidly.The results were compared with those of the chemical titration method by the paired two-sample t test,they showed that the relative error ranges between the two analytical methods for the single salt system and the complex system are-0.36％±3.6％and 0.99％±4.0％,respectively,which are within the allowed ranges of the process.The measurement results of fluorescence spectrometry have higher precision,faster speed and simpler operation compared with the chemical titration method,while the test results could further approach the true value after being calibrated.
fluorescence spectrometrychemical titration methodrapid analysispaired two-sample t testelectroplate baths
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维普
