双壳贝类中微量元素的多元数据分析：特征描述与食品安全评估。
Multivariate data analysis of trace elements in bivalve molluscs: Characterization and food safety evaluation.
机构信息
Instituto de Química, Universidade Federal da Bahia, Campus Universitário de Ondina, Salvador 40170-280, Bahia, Brazil.
Instituto de Química, Universidade Federal da Bahia, Campus Universitário de Ondina, Salvador 40170-280, Bahia, Brazil; Departamento de Ciências Exatas e Tecnológicas, Universidade Estadual de Santa Cruz, Ilhéus 45662-900, Bahia, Brazil.
出版信息
Food Chem. 2019 Feb 1;273:64-70. doi: 10.1016/j.foodchem.2018.02.063. Epub 2018 Feb 13.
Four species of bivalve molluscs (Anomalocardia brasiliana, Iphigenia brasiliana, Lucina pectinata and Trachycardium muricatum) were collected in the Todos os Santos Bay (TSB), Bahia, Brazil, in order to evaluate As, Cd, Co, Cu, Cr, Fe, Mn, Ni, Pb, Se, V and Zn levels and, consequently, the risk of bivalve mollusc consumption in humans. The samples were analyzed by inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS) after closed-vessel microwave digestion. The accuracy was confirmed using the certified reference materials of oyster tissue (NIST 1566b) and mussel tissue (NIST 2977), and the results were statistically equivalent to the certified values. Application of principal component analysis (PCA) and hierarchical cluster analysis (HCA) showed a tendency to form two groups between samples of Lucina pectinata and Trachycardium muricatum. All species showed As and Cr concentrations higher than the maximum tolerable limit specified in Brazilian legislation.
四种双壳贝类（Anomalocardia brasiliana、Iphigenia brasiliana、Lucina pectinata 和 Trachycardium muricatum）在巴西巴伊亚州的托多斯桑托斯湾（TSB）被采集，以评估砷、镉、钴、铜、铬、铁、锰、镍、铅、硒、钒和锌的水平，以及双壳贝类食用的风险。样品经过密闭微波消解后，采用电感耦合等离子体发射光谱法（ICP OES）和电感耦合等离子体质谱法（ICP-MS）进行分析。使用牡蛎组织（NIST 1566b）和贻贝组织（NIST 2977）的认证参考物质来确认准确性，结果与认证值在统计学上等效。主成分分析（PCA）和层次聚类分析（HCA）的应用表明，Lucina pectinata 和 Trachycardium muricatum 之间的样本有形成两个组的趋势。所有物种的砷和铬浓度均高于巴西法规规定的最大耐受限量。
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