Interferences in the determination of elements that form volatile hydrides with sodium borohydride using atomic-absorption spectrophotometry and the argon-hydrogen flame

Smith, A. E.

doi:10.1039/an9750000300

Cited by 254 publications

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“…The most important interferences in the arsine generation technique are transition metals and compounds which form hydrides with sodium borohydride (21). Such interferences are not ,significant at the concentrations normaHy found in human urine, except maybe for selenium.…”

Section: Experimental Designmentioning

confidence: 99%

A rapid method for the selective analysis of total urinary metabolites of inorganic arsenic.

Norin¹,

Vahter²

1981

Scand J Work Environ Health

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7 (1981) 3'8-44. Total urinary arsenic has traditionally been used for assessing occupational exposure to inorganic arsenic. However, dietary arsenic, especially from seafood, may greatly influence this value. This paper describes a fast and convenient method for routinely measuring the combined amount of inorganic arsenic, methylarsonic acid, and dimethylarsinic acid, which are the major urinary meta!bolites after exposure to inorganic arsenic. Organic arsenic compounds of marine origin are not biotransformed to inorganic arsenic or methylated arsenic acids to any significance in the human body. They do not produce arsines when treated with the reducing agent in the proposed method and will therefore not interfere with the measurements. The sensitivity, accuracy, and precision of the proposed method are sufficient for the determination of concentrations of arsenic normally found in the urine of nonexposed persons. The method is based on a commercially available hydride generation kit attached to an atomic absorption spectrophotometer.

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Section: Experimental Designmentioning

confidence: 99%

A rapid method for the selective analysis of total urinary metabolites of inorganic arsenic.

Norin¹,

Vahter²

1981

Scand J Work Environ Health

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“…The Hydride Generation-Inductively Coupled PlasmaOptical Emission Spectroscopy (HG-ICP-OES) technique was adopted because of its high sensitivity. This allowed working with a smaller sample size and greater dilution of the sample digest, thereby minimizing elemental interference (Smith, 1975). The digested samples were acidified with concentrated HCl to give a 25% (v/v) (approximately 5 M) solution.…”

Section: Analytical Technique For Trace Element Concentrations In Soilmentioning

confidence: 99%

Secondary geochemical dispersion in the Precambrian auriferous Hutti-Maski schist belt, Raichur district, Karnataka, India. Part I: anomalies of As, Sb, Hg and Bi in soil and groundwater

Sahoo

Pandalai

2000

Journal of Geochemical Exploration

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“…Hydride generation AAS (HGAAS) [7][8][9][10] have often been reported to determine bismuth at sub ppm levels in steel samples, but it was also mentioned that the determination of bismuth by HGAAS suffers from severe interference from cobalt, iron, nickel and precious metals. 11) Recently ICP-MS methods 12,13) have also been proposed, affording more sensitive determination of bismuth in steels with detection limits one order of magnitude lower than AAS methods. As described, it seems likely that AAS and ICP-MS will become the main tools for bismuth determination in steels.…”

Section: Introductionmentioning

confidence: 99%

Simple, Rapid and Sensitive Determination of Bismuth in Iron and Steel Based on In-line Preconcentration/separation Directly Coupled with Spectrophotometric Detection in a Continuous Flow System

2004

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A novel flow injection system is presented for simple, rapid and selective determination of bismuth at sub-ppm levels in iron and steel by coupling in-line anion exchange preconcentration/separation directly with spectrophotometric detection. Bismuth in 0.5 M HCl solution was adsorbed on a small column packed with Dowex 1X8 anion exchange resin and desorbed with a small volume of 0.5 M H 2 SO 4 , which allowed effective preconcentration/separation of bismuth from a large excess of iron(III) and other coexistent elements in the steel samples. Bismuth was detected by complex formation with iodide in 0.5 M H 2 SO 4 yielding a yellow color. Various analytical parameters were investigated, and optimal conditions and manifold configurations were established. A linear calibration using a 10 m sample loop was obtained for bismuth in the range of 0.005-0.30 ppm. The relative standard deviation for 0.1 ppm bismuth in the solution was 0.8% (nϭ5). The estimated limit of determination is ca. 0.2 ppm in steel sample when a 5 m sample loop (1.0 mm i.d.) is used. The results for analyses of steel samples by the present FI system correspond well with those obtained by AAS methods. The present FI system affords a rapid and simple analysis: only 12 min is required for analytical measurement after sample injection, and no complicated manual operation is involved.

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Interferences in the determination of elements that form volatile hydrides with sodium borohydride using atomic-absorption spectrophotometry and the argon-hydrogen flame

Cited by 254 publications

References 0 publications

A rapid method for the selective analysis of total urinary metabolites of inorganic arsenic.

A rapid method for the selective analysis of total urinary metabolites of inorganic arsenic.

Secondary geochemical dispersion in the Precambrian auriferous Hutti-Maski schist belt, Raichur district, Karnataka, India. Part I: anomalies of As, Sb, Hg and Bi in soil and groundwater

Simple, Rapid and Sensitive Determination of Bismuth in Iron and Steel Based on In-line Preconcentration/separation Directly Coupled with Spectrophotometric Detection in a Continuous Flow System

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