Center for Environmental Diagnostics and Bioremediation, University of West Florida, Pensacola, USA.
Mar Environ Res. 2011 Sep;72(3):96-104. doi: 10.1016/j.marenvres.2011.06.003. Epub 2011 Jun 21.
The health benefits of regular consumption of fish and seafood have been espoused for many years. However, fish are also a potential source of environmental contaminants that have well known adverse effects on human health. We investigated the consumption risks for largemouth bass (Micropterus salmoides; n = 104) and striped mullet (Mugil cephalus; n = 170), two commonly harvested and consumed fish species inhabiting fresh and estuarine waters in northwest Florida. Skinless fillets were analyzed for total mercury, inorganic arsenic, polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/F), polychlorinated biphenyls (PCBs), and organochlorine pesticides. Contaminant levels were compared to screening values (SV) calculated using U.S. Environmental Protection Agency (EPA) recommendations for establishing consumption advisories. Largemouth bass were found to contain high levels of total mercury at all sampling locations (0.37-0.89 ug/g) and one location exhibited elevated total PCBs (39.4 ng/g). All of the samples exceeded Florida fish consumption advisory trigger levels for total mercury and one location exceeded the U.S. EPA SV for total PCBs. As a result of the high mercury levels, the non-cancer health risks (hazard index-HI) for bass were above 1 for all locations. Striped mullet from several locations with known point sources contained elevated levels of PCBs (overall range 3.4-59.3 ng/g). However, total mercury levels in mullet were low. Eight of the 16 mullet sampling locations exceeded the U.S. EPA SV for total PCBs and two locations exceeded an HI of 1 due to elevated PCBs. Despite the elevated levels of total PCBs in some samples, only two locations exceeded the acceptable cancer risk range and therefore cancer health risks from consumption of bass and mullet were determined to be low at most sampling locations.
多年来，人们一直提倡经常食用鱼类和海鲜对健康有益。然而，鱼类也是环境污染物的潜在来源，这些污染物对人类健康有明显的不良影响。我们调查了栖息在佛罗里达州西北部淡水和河口水域的大口黑鲈（Micropterus salmoides；n=104）和条纹鲻（Mugil cephalus；n=170）这两种常见捕捞和食用鱼类的消费风险。去皮鱼片分析了总汞、无机砷、多氯联苯二恶英和多氯联苯呋喃（PCDD/F）、多氯联苯（PCBs）和有机氯农药。污染物水平与使用美国环境保护署（EPA）建议制定消费建议的筛选值（SV）进行了比较。在所有采样地点，大口黑鲈的总汞含量都很高（0.37-0.89ug/g），一个地点的总多氯联苯含量升高（39.4ng/g）。所有样本均超过佛罗里达州鱼类消费咨询的总汞触发水平，一个地点超过美国 EPA 的总多氯联苯 SV。由于汞含量高，鲈鱼的非癌症健康风险（危害指数-HI）在所有地点都超过 1。在已知有污染源的几个地点的条纹鲻鱼体内含有高水平的多氯联苯（总范围为 3.4-59.3ng/g）。然而，鲻鱼的总汞含量很低。16 个鲻鱼采样地点中有 8 个超过了美国 EPA 总多氯联苯的 SV，有两个地点由于多氯联苯含量升高，HI 超过 1。尽管一些样本中总多氯联苯的含量升高，但只有两个地点超过了可接受的癌症风险范围，因此在大多数采样地点，食用鲈鱼和鲻鱼的癌症健康风险被认为较低。
