分析化学2016，Vol.44Issue(11)：1659-1664,6.DOI:10.11895/j.issn.0253-3820.160516
毛细管电泳-电感耦合等离子体质谱联用测定海藻中铅形态化合物
Determination of Lead Species in Algae by Capillary Electrophoresis-Inductively Coupled Plasma-Mass Spectrometry
摘要
Abstract
A method of capillary electrophoresis ( CE ) combined with inductively coupled plasma-mass spectrometry ( ICP-MS) was established for the determination of lead ion ( PbⅡ) , trimethyl lead ( TML) and triethyl lead ( TEL) . Meanwhile, the extraction technology of different species of lead in algae was established and optimized for the qualitative and quantitative analysis. The results showed that three kinds of lead compounds could be effectively separated within 20 min by CE-ICP-MS with 70 mmol/L H3 BO3-17. 5 mmol/L Na2B4O7(pH 8. 90) as a buffer solution. There was a good reproducibility of migration time (RSD﹤4%) and peak area ( RSD﹤5%) . Three kinds of lead compounds had good linear relationship within 10-200μg/L with the correlation coefficient larger than 0. 90. The detection limits of PbⅡ, TML and TEL (S/N=3, Pb) were 0. 091, 0. 023 and 0. 030 μg/L, respectively. The extraction rate of Pb reached more than 80% by using fractional extraction, and the recovery rates of Pb Ⅱ, TML and TEL were 103. 6%, 95. 7% and 90. 6%, respectively, with algae as the substrate. The lead content detection of laver and kelp showed that Pb in algae mainly existed in the form of Pb Ⅱ. The method had the advantages of siplicity, high efficiency and low sample consumption, which could provide technical support for the quality control of marine algae and other marine products.关键词
铅形态分析/毛细管电泳/电感耦合等离子体质谱/铅/藻类Key words
Lead species analysis/Capillary electrophoresis/Inductively coupled plasma-mass spectrometry/Lead/Marine algae引用本文复制引用
李景喜,孙承君,郑立,蒋凤华,尹晓斐,陈军辉,王小如..毛细管电泳-电感耦合等离子体质谱联用测定海藻中铅形态化合物[J].分析化学,2016,44(11):1659-1664,6.基金项目
本文系中央级公益性科研院所基本科研业务费专项资金(No.2016Q02)、泰山学者海外创新人才项目和国家基金委-山东省联合基金项目(No. U1406403)资助 （No.2016Q02）
