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Titolo:
QUANTITATIVE-ANALYSIS OF HUMAN HAIR FOR SELENIUM(IV), SELENIUM(VI) AND TOTAL SELENIUM BY HYDRIDE-GENERATION ATOMIC-ABSORPTION SPECTROMETRY
Autore:
DONG XN; NAKAGUCHI Y; HIRAKI K;
Indirizzi:
KINKI UNIV,FAC SCI & TECHNOL,DEPT CHEM OSAKA 577 JAPAN KINKI UNIV,FAC SCI & TECHNOL,DEPT CHEM OSAKA 577 JAPAN
Titolo Testata:
Analytical sciences
fascicolo: 2, volume: 13, anno: 1997,
pagine: 195 - 198
SICI:
0910-6340(1997)13:2<195:QOHHFS>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSITION-METAL INTERFERENCES; NEUTRON-ACTIVATION ANALYSIS; SPECIATION; CHROMATOGRAPHY; MECHANISMS; SAMPLES; NICKEL; URINE;
Keywords:
HYDRIDE GENERATION ATOMIC ABSORPTION SPECTROMETRY; ULTRASONIC LEACHING; HUMAN HAIR SAMPLE; SELENIUM(IV); SELENIUM(VI); SOLUBLE SELENIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
X.N. Dong et al., "QUANTITATIVE-ANALYSIS OF HUMAN HAIR FOR SELENIUM(IV), SELENIUM(VI) AND TOTAL SELENIUM BY HYDRIDE-GENERATION ATOMIC-ABSORPTION SPECTROMETRY", Analytical sciences, 13(2), 1997, pp. 195-198

Abstract

Optimized procedures were established for the determination of total Se, organic Se, Se(IV), and Se(VI) in human hair by means of hydride-generation atomic absorption spectrometry (HGAAS), respectively. Using this method, the total Se content in a hair sample was determined through pretreating the sample with nitric acid-perchloric acid, and then reducing Se(VI) to Se(IV) with 6.0 mol dm(-3) hydrochloric acid; however, for individual Se(IV), Se(VI) or soluble Se, after the hair samplewas immersed into water and disrupted ultrasonically for 8 h at room temperature, 2,3-diaminonaphthalene (DAN) reagent was added to extractSe(IV). The sum of Se(IV) and Se(VI) was determined by extracting Se(IV) after reducing all of the Se(VI) into Se(IV) with the addition of potassium bromide. Se(VI) was obtained by subtracting Se(IV) from the sum of Se(IV) and Se(VI). The content of organic Se in the hair samplewas calculated by subtracting Se(IV)+Se(VI) from the total Se. The detection limit of the method was 0.3 ngSe cm(-3), and the average precision (relative standard deviation) was less than 5% (n=6).

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Documento generato il 30/09/20 alle ore 08:38:44