Chung S W C, Kwong K P, Tang A S P, Xiao Y, Ho P Y Y
a Food Research Laboratory, Food and Environmental Hygiene Department , Public Health Laboratory Centre , Hong Kong , China.
Food Addit Contam Part B Surveill. 2008;1(2):106-13. doi: 10.1080/02652030802277586.
Levels of total mercury (tHg) and mono-methylmercury (MeHg) were measured in 280 different fish, including fresh/frozen raw whole fish of 89 different species and canned tuna fish of three different species, that are traded mainly in Hong Kong, China. These samples were purchased from different commercial outlets between April and August 2007. All samples of raw whole fish were identified at species level by the Agriculture, Fisheries and Conservation Department. The range for tHg and MeHg of all samples were 3-1370 and 3-1010 µg kg(-1), respectively, with medians of 63 and 48 µg kg(-1), respectively. The results show that, according to Hong Kong legislation, the products on the market are generally 'safe'. A total of 277 samples (99?) contained tHg and MeHg below the legal limit of 500 µg kg(-1). The remaining three samples of alfonsino (species: Beryx splendens) were found to contain tHg and MeHg at levels higher than 500 µg kg(-1) (tHg: 609-1370 µg kg(-1); MeHg: 509-1010 µg kg(-1)). The ratios of MeHg to tHg in the different fish species ranged from 0.46 to 0.99.
对280种不同鱼类的总汞(tHg)和单甲基汞(MeHg)含量进行了测定,这些鱼类包括89种不同种类的新鲜/冷冻生整条鱼以及3种不同种类的罐装金枪鱼,主要在中国香港进行交易。这些样本于2007年4月至8月间从不同商业网点购得。所有生整条鱼样本均由渔农自然护理署鉴定到物种水平。所有样本的tHg和MeHg含量范围分别为3 - 1370和3 - 1010微克/千克,中位数分别为63和48微克/千克。结果表明,根据香港法例,市场上的产品总体上是“安全的”。共有277个样本(99%)的tHg和MeHg含量低于500微克/千克的法定限值。其余三个红金眼鲷样本(物种:红光笛鲷)被发现其tHg和MeHg含量高于500微克/千克(tHg:609 - 1370微克/千克;MeHg:509 - 1010微克/千克)。不同鱼类物种中MeHg与tHg的比率在0.46至0.99之间。