AN ONLINE METHOD FOR THE DETERMINATION OF LEAD AND LEAD-ISOTOPE RATIOS IN FRESH AND SALINE WATERS BY INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY

被引：25

作者：

HALICZ, L ^{[1
]}

LAM, JWH ^{[1
]}

MCLAREN, JW ^{[1
]}

机构：

[1] NATL RES COUNCIL CANADA,INST ENVIRONM RES & TECHNOL,OTTAWA K1A 0R6,ONTARIO,CANADA

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 1994年 / 49卷 / 07期

关键词：

D O I：

10.1016/0584-8547(94)80057-X

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A previously reported on-line ICP-MS method for the determination of lead and other trace elements in seawater has been re-examined to determine its suitability for the determination of lead isotope ratios (Pb-206/Pb-207 and Pb-207/Pb-208) in fresh and saline natural waters. A detection limit of 0.9 ng/l for total lead (for a 5 ml sample) was achieved. Precision of isotope ratio data was 0.2-0.3% RSD at a Pb concentration of 1 mug/l, and was still better than 2% at concentrations of only 10-40 ng/l in seawater certified reference materials (CRMs). For all three natural water CRMs examined, measured precision was very close to the limit predicted by counting statistics.

引用

页码：637 / 647

页数：11

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