Accession Number:

ADA067864

Title:

Hyrdride Preconcentration for Inductively Coupled Plasma Optical Emission Spectrometry.

Descriptive Note:

Interim /rept.,

Corporate Author:

ARIZONA UNIV TUCSON DEPT OF CHEMISTRY

Personal Author(s):

• Fry,R. C.
• Denton,M. B.
• Windsor,D. L.
• Northway,S. J.

Report Date:

1979-04-05

Pagination or Media Count:

28.0

Abstract:

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

Descriptors:

• *EMISSION SPECTROSCOPY
• *SAMPLERS
• *ARSENIC
• COUPLING(INTERACTION)
• HYDRIDES
• PLASMAS(PHYSICS)
• SENSITIVITY
• SAMPLING
• ATOMIC SPECTROSCOPY
• ABSORPTION SPECTRA
• ARSINES
• OPTICAL DETECTORS
• CONCENTRATION(CHEMISTRY)
• TRACE ELEMENTS
• SEPARATORS
• SODIUM BOROHYDRIDES
• REDUCTION(CHEMISTRY)

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE