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Statistical Evaluation of an Inductively Coupled Plasma Atomic Emission Spectrometric Method for Routine Water Quality Testing

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In an interlaboratory test, inductively coupled plasma atomic emission spectrometry (ICP-AES) was compared with flame atomic absorption spectrometry and molecular absorption spectrophotometry for the determination of 17 major and trace elements in 100 filtered natural water samples. No unacceptable biases were detected. The analysis precision of ICP-AES was found to be equal to or better than alternative methods. Known-addition recovery experiments demonstrated that the ICP-AES determinations are accurate to between ±2 and ±10 percent; four-fifths of the tests yielded average recoveries of 95-105 percent, with an average relative standard deviation of about 5 percent.

Keywords: Emission spectroscopy; Inductively coupled plasma; Trace metals analyses; Water quality testing

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702854248458

Affiliations: 1: U.S. Geological Survey, MS 407, P.O. Box 25046, Denver Federal Center, Denver, Colorado 80225 2: U.S. Geological Survey, 6481 Peachtree Industrial Blvd., Doraville, Georgia 30340

Publication date: May 1, 1985

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