Hyrdride Preconcentration for Inductively Coupled Plasma Optical Emission Spectrometry.
ARIZONA UNIV TUCSON DEPT OF CHEMISTRY
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Studies are presented describing an improved application of the NaBH4 reduction of soluble arsenite to form arsine as a preconcentration approach for ultra-trace level arsenic determination by inductively coupled plasma optical emission spectrometry ICP-OES. Specialized analyte introduction techniques are described for elimination of reaction by-products that would normally extinguish a medium power plasma discharge. An approach is presented to minimize the need for back ground correction and facilitate a superior arsenic detection limit or 0.03 ngmL in a relatively inexpensive 1.2 kW ICP system. Author
- Atomic and Molecular Physics and Spectroscopy