Singh J G, Chang-Yen I, Stoute V A, Chatergoon L
Department of Chemistry, The University of the West Indies, St Augustine, Trinidad.
Environ Pollut. 1991;69(2-3):203-15. doi: 10.1016/0269-7491(91)90144-l.
An investigation was carried out to determine the effect of tissue type, tissue location and size of fish on the heavy metal levels of five species of fish found in the marine environment of the tropical island of Trinidad. The study was conducted with the fish species Lutjanus synagris, Micropogon furnieri, Cynoscion leiarchus, Caranx hippos and Scomberomorus brasiliensis, and focused on the muscle and skin tissues of the fillet of these fish. The metals Fe, Zn, Cu, Ni, Pb, Cd and Cr were analysed by atomic absorption spectrophotometry after acid digestion of the tissues, but only Fe, Zn and Cu were detected. Skin tissue showed elevated levels of metals in comparison with muscle tissue, and significant differences in metal levels with respect to tissue location in skin, and varying effects of size on both muscle and skin metal levels in the different species, were found. These results emphasize the need for careful sampling of tissue in these fish species if reliable data on heavy metal levels are to be generated.
开展了一项调查，以确定组织类型、组织位置和鱼的大小对特立尼达热带岛屿海洋环境中发现的五种鱼类重金属含量的影响。该研究针对的鱼类有紫红笛鲷、乌拉圭无须鳕、平滑犬牙石首鱼、军曹鱼和巴西马鲛，重点关注这些鱼鱼片的肌肉和皮肤组织。在对组织进行酸消解后，通过原子吸收分光光度法分析了铁、锌、铜、镍、铅、镉和铬等金属，但仅检测到铁、锌和铜。与肌肉组织相比，皮肤组织中的金属含量较高，发现皮肤中金属含量在组织位置方面存在显著差异，并且不同物种中鱼的大小对肌肉和皮肤金属含量有不同影响。这些结果强调，如果要生成关于重金属含量的可靠数据，对这些鱼类进行组织采样时需要谨慎。
