Comparison of Different Extraction Approaches for Heavy Metal Partitioning in Sediment Samples

M.B.ARAIN1; T.G.KAZI; M.K.JAMALI; J.A.BAIG; H.I.AFRIDI; N.JALBANI; R.A.SARFRAZ

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Comparison of Different Extraction Approaches for Heavy Metal Partitioning in Sediment Samples

机译：沉积物样品中重金属分配的不同提取方法的比较

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Three extraction methods,ultrasonic assisted extraction (USE),microwave assisted extraction (MSE),and conven tional single extraction (CSE),in conjunction with the modified three-stage BCR sequential extraction procedure (SEP)were applied to examine the contents of Cd,Cu,Cr,Ni,Pb and Zn from lake sediment samples,to know whether these techniques can reduce extraction time and improve reproducibility.The SEP and developed alternative single extraction methods were validated by the analysis of certified reference material BCR 601.By the use of optimized sonication and microwave conditions,steps 1,2 and 3 of the BCR sequential extraction methods (excluding the hydrogen peroxide digestion in step 3,which was not performed with sonication and microwave) could be completed in 15-30 min and 60150 s,respectively.The recoveries of total extractable metal contents in BCR 601,obtained by three single extractions ranged from 93.3%-102%,88.9%-104% and 81.2%-96.2% for CSE,USE and MSE,respectively.The precision of the single extraction methods was found in the range of 3.7%-9.4% for all metals (n=6).

机译：采用超声波辅助提取（USE），微波辅助提取（MSE）和常规单次提取（CSE）三种提取方法，结合改进的三阶段BCR顺序提取程序（SEP）来检测镉的含量从湖泊沉积物中提取铜，铬，镍，铅，锌和铅，铜，铬，镍，铅和锌，以了解这些技术是否可以减少提取时间并提高重现性。通过对标准参考物质BCR 601的分析，验证了SEP和已开发的替代单一提取方法。使用优化的超声处理和微波条件，可以在15-30分钟和60150 s内完成BCR顺序提取方法的步骤1,2和3（不包括步骤3中过氧化氢消化，该步骤不是通过超声和微波进行的）通过三次单次萃取获得的BCR 601中总可萃取金属含量的回收率分别为CSE，USE和MSE分别为93.3％-102％，88.9％-104％和81.2％-96.2％。对于所有金属（n = 6），单一萃取方法的精密度均在3.7％-9.4％的范围内。

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《土壤圈（英文版）》 |2009年第4期|476-485|共10页
作者
M.B.ARAIN1; T.G.KAZI; M.K.JAMALI; J.A.BAIG; H.I.AFRIDI; N.JALBANI; R.A.SARFRAZ;
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National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

Government Degree College,Usta Mohammad,Balochistan 80300 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

pakistan Council for Scientific and Industrial Research,University Road,Karachi 75280 (Pakistan);

National Centre of Excellence in Analytical Chemistry,Sindh University,Jamshoro 76080 (Pakistan);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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中图分类农业基础科学;
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Comparison of Different Extraction Approaches for Heavy Metal Partitioning in Sediment Samples

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