Iwegbue Chukwujindu M A
Department of Chemistry, Delta State University, P.M.B. 1, Abraka, Nigeria,
Environ Monit Assess. 2015 Mar;187(3):85. doi: 10.1007/s10661-014-4135-5. Epub 2015 Feb 6.
The concentrations of metals (Cd, Pb, Ni, Cr, Cu, Co, Fe, Mn, and Zn) were determined in selected brands of canned mackerel, sardine, and tuna in Nigeria with a view to providing information on the dietary intakes of metals and lifelong health hazards associated with the consumption of these products. The concentrations of metals were determined by using atomic absorption spectrometry after acid digestion. The mean concentrations of metals in canned mackerel, sardine, and tuna were found as 0.04-0.58, 0.06-0.44, 0.32-0.83 μg/g for Cd; 0.05-2.82, 0.70-2.98, 0.23-2.56 μg/g for Pb, 1.33-11.33, <0.20-17.53, nd-34.2 μg/g for Ni, 0.49-3.79, 0.22-1.89, 0.66-14.39 μg/g for Cr, 0.33-0.92, 0.03-1.51, <0.08-1.31 μg/g for Cu, 0.11-2.17, nd-0.75, 0.14-0.50 μg/g for Co, 6.45-26.90, 6.06-53.54, 3.06-95.78 μg/g for Fe, 2.30-3.84, 0.95-21.78, 1.65-2.33 μg/g for Mn, 1.15-7.19, 3.60-17.88, 1.21-5.35 μg/g for Zn, respectively. The mean concentrations of Cd, Pb, and Fe in some of these brands of canned fish were above their permissible limits while other metals occurred at levels below their permissible limits. The estimated daily intakes of metals from consumption of 20.8 g fish per day by a 60 kg body weight adult were below the provisional tolerable daily intakes for Cd, Pb, Ni, Cr, and Cu and recommended daily intakes for Co, Fe, Mn, and Zn. The estimated target hazard quotients of the examined metals were less than 1 in the majority of the samples indicating no long-term health hazard at the present circumstance.
测定了尼日利亚部分品牌罐装鲭鱼、沙丁鱼和金枪鱼中的金属（镉、铅、镍、铬、铜、钴、铁、锰和锌）含量，旨在提供有关这些金属的膳食摄入量以及食用这些产品所带来的终身健康危害的信息。金属含量通过酸消解后使用原子吸收光谱法进行测定。罐装鲭鱼、沙丁鱼和金枪鱼中金属的平均含量分别为：镉0.04 - 0.58、0.06 - 0.44、0.32 - 0.83μg/g；铅0.05 - 2.82、0.70 - 2.98、0.23 - 2.56μg/g；镍1.33 - 11.33、<0.20 - 17.53、未检出 - 34.2μg/g；铬0.49 - 3.79、0.22 - 1.89、0.66 - 14.39μg/g；铜0.33 - 0.92、0.03 - 1.51、<0.08 - 1.31μg/g；钴0.11 - 2.17、未检出 - 0.75、0.14 - 0.50μg/g；铁6.45 - 26.90、6.06 - 53.54、3.06 - 95.78μg/g；锰2.30 - 3.84、0.95 - 21.78、1.65 - 2.33μg/g；锌1.15 - 7.19、3.60 - 17.88、1.21 - 5.35μg/g。这些品牌的部分罐装鱼中镉、铅和铁的平均含量高于其允许限量，而其他金属的含量则低于允许限量。对于一名体重60千克的成年人，每天食用20.8克鱼所摄入的金属估计日摄入量低于镉、铅、镍、铬和铜的暂定每日耐受摄入量以及钴、铁、锰和锌的推荐每日摄入量。在所检测的大多数样品中，所检测金属的估计目标危害商数小于1，表明在当前情况下不存在长期健康危害。
