Chen M H, Teng P Y, Chen C Y, Hsu C C
a Department of Marine Biotechnology and Resources , National Sun Yat-sen University , 70 Lianhai Rd., Gushan , Kaohsiung 80424 , Taiwan.
Food Addit Contam Part B Surveill. 2011;4(1):15-21. doi: 10.1080/19393210.2010.535908. Epub 2011 Jan 25.
Muscle samples of 121 and 110 bigeye tuna (Thunnus obesus) caught by Taiwanese long-line fishing vessels in the Atlantic and Indian Oceans, respectively, were used to analyze total mercury (THg) and organic mercury (OHg) content. The overall THg and OHg concentrations were 0.786 ± 0.386 (0.214-3.133) and 0.595 ± 0.238 (0.143-2.222) mg kg⁻¹ wet weight, respectively, similar to the results of previous studies. Our findings, however, reflected the highest THg and OHg concentrations for the species in each ocean among the published data. Mean THg and OHg concentrations in Atlantic tuna were significantly (p < 0.05) higher than those in Indian tuna. Two of 121 samples of tuna from the Atlantic Ocean, but no samples from the Indian Ocean, had levels of OHg above 2 mg kg⁻¹ wet weight set by the Department of Health Taiwan, and 13 of 121 samples of tuna from the Atlantic Ocean and three of 110 samples from the Indian Ocean had levels of OHg above 1 mg kg⁻¹ wet weight set by US FDA and WHO. Accordingly, for adult Taiwanese men and women with average body weight of 65 and 55 kg, respectively, the maximum allowable weekly intake of bigeye tuna is suggested to be 170 and 145 g, respectively.
分别取自台湾延绳钓渔船在大西洋和印度洋捕获的121条和110条大眼金枪鱼（Thunnus obesus）的肌肉样本，用于分析总汞（THg）和有机汞（OHg）含量。总汞和有机汞的总体浓度分别为0.786±0.386（0.214 - 3.133）和0.595±0.238（0.143 - 2.222）mg kg⁻¹湿重，与先前研究结果相似。然而，我们的研究结果显示，在所发表的数据中，该物种在每个大洋中的总汞和有机汞浓度都是最高的。大西洋金枪鱼的总汞和有机汞平均浓度显著高于印度洋金枪鱼（p < 0.05）。在取自大西洋的121个金枪鱼样本中，有2个样本的有机汞含量高于台湾卫生部门设定的2 mg kg⁻¹湿重标准，而取自印度洋的样本中没有；在取自大西洋的121个金枪鱼样本中，有13个样本以及取自印度洋的110个样本中有3个样本的有机汞含量高于美国食品药品监督管理局和世界卫生组织设定的1 mg kg⁻¹湿重标准。因此，对于平均体重分别为65千克和55千克的成年台湾男性和女性，建议大眼金枪鱼的每周最大允许摄入量分别为170克和145克。
