New York State Department of Agriculture and Markets, Food Laboratory Division, Building 7, State Office Campus, Albany, New York 12206, USA.
J Food Prot. 2010 Sep;73(9):1715-20. doi: 10.4315/0362-028x-73.9.1715.
Concentrations of 12 metals (As, Be, Cd, Cr, Pb, Mo, Ni, Tl, Th, U, V, Hg) were determined in samples of fish and lobster obtained from various stores and markets in New York State. The seafood samples were chosen based on their popularity as a food source and the potential of the species to contain high levels of mercury based on past research results. A total of 177 fish and lobster samples were initially analyzed using combustion for Hg. The samples were then reanalyzed for several elements using microwave digestion followed by inductively coupled plasma mass spectrometry. The detection limits were as follows: 20 ng/g for Th, U, and Hg; 100 ng/g for Be, Cd, V, and As; and 300 ng/g for Cr, Mo, Tl, Pb, and Ni. Twenty-two samples had mercury concentrations greater than the 1,000 ng/g limit set by the Commission of the European Communities. The highest Cd concentration (511 ng/g) was found in a lobster. This level is greater than the 500 ng/g limit set by the Commission of the European Communities. All levels of As, Cd, Cr, Pb, and Ni were below the U.S. Food and Drug Administration action levels for these metals in crustaceans and shellfish. The highest average mercury level (1,190 ng/g) was found in swordfish. The highest average arsenic level (13,400 ng/g) was found in monkfish. Inductively coupled plasma mass spectrometry with microwave digestion was demonstrated to be a very effective technique for analyzing fish and lobster for Hg and other toxic metals.
从纽约州的各个商店和市场采集了鱼类和龙虾样本，测定了其中 12 种金属（砷、铍、镉、铬、铅、钼、镍、铊、钍、铀、钒、汞）的浓度。选择这些海鲜样本是基于它们作为食物来源的受欢迎程度，以及基于过去的研究结果，这些物种有可能含有高水平的汞。最初使用燃烧法对 177 个鱼类和龙虾样本进行了 Hg 分析。然后，使用微波消解法对这些样本进行了其他几种元素的重新分析，接着使用电感耦合等离子体质谱法进行分析。检测限如下：Th、U 和 Hg 的检测限为 20ng/g；Be、Cd、V 和 As 的检测限为 100ng/g；Cr、Mo、Tl、Pb 和 Ni 的检测限为 300ng/g。有 22 个样本的汞浓度超过了欧盟委员会设定的 1000ng/g 限值。在一只龙虾中发现的 Cd 浓度最高（511ng/g），超过了欧盟委员会设定的 500ng/g 限值。所有 As、Cd、Cr、Pb 和 Ni 的水平都低于美国食品和药物管理局针对这些金属在甲壳类动物和贝类中的行动水平。在箭鱼中发现的平均汞水平最高（1190ng/g）。在安康鱼中发现的平均砷水平最高（13400ng/g）。微波消解结合电感耦合等离子体质谱法被证明是一种非常有效的分析鱼类和龙虾中 Hg 和其他有毒金属的技术。
