Comparison of partial extraction reagents for assessing potential bioavailability of heavy metals in sediments

被引：36

作者：

Brady, James P. ^{[1
,2
]}

Kinaev, Irina ^{[2
]}

Goonetilleke, Ashantha ^{[1
]}

Ayoko, Godwin A. ^{[1
]}

机构：

[1] Queensland Univ Technol, Fac Sci & Engn, GPO Box 2434, Brisbane, Qld 4001, Australia

[2] Queensland Univ Technol, Cent Analyt Res Facil, Inst Future Environm, GPO Box 2434, Brisbane, Qld 4001, Australia

来源：

MARINE POLLUTION BULLETIN | 2016年 / 106卷 / 1-2期

关键词：

Heavy metals; Partial extraction; Sequential extraction; Contamination; ACID-VOLATILE SULFIDE; POTABLE WATER; CONTAMINATED SOILS; TRACE-METALS; MARINE; SPECIATION; MERCURY; GOLD; BAY; QUEENSLAND;

D O I：

10.1016/j.marpolbul.2016.03.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Assessment of heavy metal bioavailability in sediments is complex because of the number of partial extraction methods available for the assessment and the general lack of certified reference materials. This study evaluates five different extraction methodologies to ascertain the relative strengths and weaknesses of each method. The results are then compared to previously published work to ascertain the most effective partial extraction technique, which was established to dilute (0.75-1 M) nitric acid solutions. These results imply that single reagent; weak acid extractions provide a better assessment of potentially bioavailable metals than the chelating agents used in sequential extraction methods. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：329 / 334

页数：6

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