AN INTERLABORATORY COMPARISON OF A STANDARDIZED EDTA EXTRACTION PROCEDURE FOR THE ANALYSIS OF AVAILABLE TRACE-ELEMENTS IN 2 QUALITY-CONTROL SOILS

被引：12

作者：

CROSLAND, AR ^{[1
]}

MCGRATH, SP ^{[1
]}

LANE, PW ^{[1
]}

机构：

[1] AFRC,INST ARABLE CROPS RES,ROTHAMSTED EXPTL STN,DEPT STAT,HARPENDEN AL5 2JQ,HERTS,ENGLAND

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 1993年 / 51卷 / 1-4期

关键词：

HEAVY METALS; ZINC; COPPER; LEAD; MANGANESE; ICPAES;

D O I：

10.1080/03067319308027620

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A standardised EDTA extraction procedure was tested collaboratively by six laboratories using two in-house reference soils identified as soil A and soil B. The extracts were analysed for Zn. Cu, Pb and Mn by Inductively Coupled Plasma Spectrometry. Concentrations of extractable elements in soil A were generally much lower than those found in soil B. All laboratories produced some extreme outlying results, most of these were produced in soil B. Results for Mn were the most variable, with a range of 63.4-100.3 mug g-1 in soil A and 226.4-415.3 mug g-1 in soil B. In both soils, one laboratory reported high values for Zn and Mn and, one laboratory, for soil B, produced values for all four elements which were consistently low. If outlying results are ignored, the results from most laboratories were in reasonable agreement for all elements except Mn.

引用

页码：153 / 160

页数：8