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A simple and rapid hydride generation—atomic absorption method for the determination of arsenic in biological, environmental and geological samples

✍ Scribed by R.G. Smith; J.C. Van Loon; J.R. Knechtel; J.L. Fraser; A.E. Pitts; A.E. Hodges

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
581 KB
Volume
93
Category
Article
ISSN
0003-2670

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✦ Synopsis

An inexpensive 50-ml disposable (hypodermic) syringe is used as the arsine generation vessel. The arsine is passed into a lo-cm long. lo-mm i.d. electrically heated silica tube atomizer with nitrogen carrier gas. Jkcess of hydrogen is burned off in a hydrogen diffusion flame at the ends of the tube. Samples containing appreciable silica are fused with KOH-MgO, while organic samples are digested with H,SO,-H,O,. Parameters affecting the determination of arsenic as anine have been investigated. Collaborative results on a variety of standard reference materials agree well with literature values. The advantages of the proposed method are that it is sensitive, selective. fast, simple, inexpensive, precise and accurate_

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