Determination of nickel in human scalp hair by slurry sampling - electrothermal atomic absorption spectrometry

被引：14

作者：

BermejoBarrera, P

MoredaPineiro, A

MoredaPineiro, J

BermejoBarrera, A

机构：

[1] Dept. Analyt. Chem., Nutr./B., Faculty of Chemistry, University of Santiago de Compostela, 15706 Santiago de Compostela, Av. das Ciencias s/n

来源：

ANALYTICA CHIMICA ACTA | 1997年 / 349卷 / 1-3期

关键词：

atomic absorption spectrometry; nickel; scalp hair; slurry sampling;

D O I：

10.1016/S0003-2670(97)00284-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The slurry sampling technique has been effective for the determination of nickel in human scalp hair. Hair samples were pulverized using a zirconia vibrational mill ball for 20 min. The powdered samples (0.1 g) were suspended in water and diluted to 25 ml. Nickel was determined by electrothermal atomic absorption spectrometry (ETAAS) using D-2 arc background correction combined with chemical modification (magnesium nitrate at 10 mg l(-1)). Matrix effects were not observed, aqueous calibrations that covered the 0.8-30 mu g Ni l(-1) range were suitable to develop the measurements. A characteristic mass of 22.5 pg was obtained. The effect of foreign species and some nickel levels in scalp hair from healthy adults are given.

引用

页码：319 / 325

页数：7

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