Comparison of partial extraction reagents for assessing potential bioavailability of heavy metals in sediments
Comparison of partial extraction reagents for assessing potential bioavailability of heavy metals in sediments
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DOI：
10.1016/j.marpolbul.2016.03.029
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发表时间：
2016-05-15
影响因子：
5.8
通讯作者：
Ayoko, Godwin A.
中科院分区：
文献类型：
--
作者：
Brady, James P.;Kinaev, Irina;Ayoko, Godwin A.
沉积物中重金属生物有效性的评估是复杂的，因为可用于评估的部分提取方法的数量和一般缺乏认证的参考材料。本研究评估了五种不同的提取方法，以确定每种方法的相对优势和劣势。然后将结果与先前发表的工作进行比较，以确定最有效的部分提取技术，该技术被建立用于稀释（0.75-1 M）硝酸溶液。这些结果表明，单一试剂;弱酸提取提供了一个更好的评估潜在的生物可利用的金属比螯合剂中使用的顺序提取方法。(C)2016爱思唯尔有限公司版权所有
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.