Mercury determination in fish samples by flameless atomic absorption spectrometry

Taguchi, Masayoshi; YASUDA, Kenji; Dokiya, Yukiko; SHIMIZU, Makoto; Toda, Shozo

doi:10.2116/bunsekikagaku.26.438

Cited by 3 publications

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“…1.94 ± 0.03 prepared up to the present, because of the difficulty in realizing homogeneous concentrations of elements, especially that of calcium (9). In this study, the white muscle of shark (Squalus mitsukurii) was adopted as the raw material, since the distribution of metals in the muscle is known to be comparatively homogeneous owing to the fact that this fish has less bones in the muscle parts (10,14).…”

Section: Resultsmentioning

confidence: 99%

Preparation of wet fish reference material from shark meat

Dokiya¹,

Taguchi²,

Toda³

et al. 1978

Anal. Chem.

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Standard reference materials or certified reference materials for metal analysis of biological or environmental samples have recently attracted the attention of analytical chemists who deal with those "soft" materials. Since H. J. M. Bowen (1) prepared his Kale Powder in the early 1960's, several trials for preparing such materials have been performed, including grass samples by J. B. Jones (2), Orchard Leaves and Bovine

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Section: Resultsmentioning

confidence: 99%

Preparation of wet fish reference material from shark meat

Dokiya¹,

Taguchi²,

Toda³

et al. 1978

Anal. Chem.

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Preparation of Shark Powder and Shark Paste as Biological Standard Reference Materials

Dokiya¹,

Kurosawa²,

Toda³

et al. 1978

Bulletin of the Chemical Society of Japan

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As a possible biological standard reference material for metal analysis, shark powder has been prepared from the muscle of sharks (Squalus mitsukurii) and compared with shark paste which was prepared from the same raw material adopting the procedure of Japanese fish paste production. With respect to the homogeneity of metal contents and to the stability during storage, both samples were found to be similar.

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Determination of Ultra-Trace Amounts of Total Mercury by Gold Amalgamation-Cold Vapor AAS in Geothermal Water Samples by Using Ozone as Pretreatment Agent

1997

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Mercury in geothermal water samples, pretreated with ozone, was subjected to reduction-vaporization by use of tin(II) chloride. The mercury vapor was concentrated with a porous gold collector. Afterward, mercury vapor which had evolved from the heated collector was determined by cold vapor atomic absorption spectrometry (CVAAS). By using ozone as pretreatment agent, the time for the decomposition could be shortened and the blank value of mercury from reagents used was reduced. The permissible amounts of sulfide and thiosulfate ions, the main interference ions in reduction-vaporization of mercury, were 25 and 100 mg dm-3, respectively. It means that the present method provides an improvement in the permissible amounts of these ions by several hundred times in comparison with the methods using no ozone. Ozone was also found to be effective as the pretreatment agent for organic mercury. The present approach was proved to be satisfactory as the pretreatment of the quantitative analysis of ultra-trace amounts of total mercury in geothermal water samples.

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Mercury determination in fish samples by flameless atomic absorption spectrometry

Cited by 3 publications

References 0 publications

Preparation of wet fish reference material from shark meat

Preparation of wet fish reference material from shark meat

Preparation of Shark Powder and Shark Paste as Biological Standard Reference Materials

Determination of Ultra-Trace Amounts of Total Mercury by Gold Amalgamation-Cold Vapor AAS in Geothermal Water Samples by Using Ozone as Pretreatment Agent

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