Determination of As, Bi and Se in acidified slurries of marine sediment, soil and coal samples by hydride generation electrothermal atomic absorption spectrometry

被引：23
|
作者：
Moreda-Piñeiro, J [1 ]
López-Mahía, P [1 ]
Muniategui-Lorenzo, S [1 ]
Fernández-Fernández, E [1 ]
Prada-Rodríguez, D [1 ]
机构：
[1] Univ A Coruna, Fac Sci, Dept Analyt Chem, E-15071 ACoruna, Spain
来源：
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2002年 / 17卷 / 07期
关键词：
D O I：
10.1039/b109471h
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Ir-treated graphite tubes were used for preconcentration and atomisation of the As, Bi and Se hydrides generated from acidified slurries of marine sediment, soil and coal samples. A batch mode generation system was used for the hydride generation. The variables affecting the acidified slurry preparation procedure (assisted by ultrasonic energy) and the hydride generation/trapping/atomisation processes were studied by using a Plackett-Burman design. The sensitivity (characteristic masses of 65, 75 and 100 pg, for As, Bi and Se, respectively) and precision (RSD% lower than 10%) obtained were adequate for As, Bi and Se determination in slurry samples. The accuracy of the method was verified by analysing PACS-1 (Marine Sediment), GBW-07401 (Soil) and NIST SRM 1632c (Coal) certified reference materials.
引用
收藏
页码：721 / 726
页数：6
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