A solid phase extraction procedure for the simultaneous determination of total inorganic arsenic and trace metals in seawater: Sample preparation for total-reflection X-ray fluorescence

被引：24

作者：

Staniszewski, B. ^{[2
]}

Freimann, P. ^{[1
]}

机构：

[1] Bundesamt Seeschifffahrt & Hydrog, D-22589 Hamburg, Germany

[2] Adam Mickiewicz Univ, Fac Chem, Dept Analyt Chem, PL-60780 Poznan, Poland

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2008年 / 63卷 / 11期

关键词：

Arsenic; Seawater; TXRF;

D O I：

10.1016/j.sab.2008.08.018

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In this paper we present a procedure allowing total-reflection X-ray fluorescence spectrometry (TXRF) determinations of arsenic in water samples, especially in seawater samples. The procedure consists of an arsenate reduction step (performed by using a L-cysteine solution) followed by a complexation of As+3 with sodium dibenzyldithiocarbamate and solid phase extraction. The new procedure is a modification of a method developed by Prange and allows a Simultaneous determination of As together with V, Fe, Ni, Cu, Zn, Pb, and U in seawater by TXRF The procedure was tested using the Certified Reference Material CASS-4 and was later applied to regular seawater samples collected from the North Sea. The detection limit for arsenic is 10 ng L-1. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1333 / 1337

页数：5

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