Cheung K C, Leung H M, Kong K Y, Wong M H
Croucher Institute for Environmental Sciences, and Department of Biology, Hong Kong Baptist University, Hong Kong, PR China.
Chemosphere. 2007 Jan;66(3):460-8. doi: 10.1016/j.chemosphere.2006.06.008. Epub 2006 Jul 25.
Axial and ventral muscle from 10 each species of freshwater and marine fish purchased from markets in Hong Kong were analyzed for dichlorodiphenyltrichloroethane (total DDTs including DDE, DDD and DDT) and polycyclic aromatic hydrocarbons (PAHs). Among the 10 freshwater fish species, rice field eel (Monopterus albus) showed significantly higher levels of DDTs in both ventral (125 ng/g wet wt) and axial muscle (127 ng/g wet wt) than the other species. The highest concentration of PAHs was detected in catfish (Clarias fuscus), with 24.8 ng/g in ventral muscle and 9.1 ng/g in axial muscle. As to marine fish, snubnose pompano (Trachinotus blochii) showed significantly higher levels of DDT and its metabolites (1018 ng/g in ventral and 409 ng/g wet wt in axial tissues) than all other marine fish species. The overall concentrations of PAHs in marine fish species were 15.5-57.0 ng/g (axial muscle) and 18.1-118 ng/g wet wt (ventral muscle) where yellow seafin (Acanthopeyrus latus) and golden threadfin bream (Nemipterus virgatus) exhibited the highest concentrations of PAHs in the axial and ventral muscles, respectively. In general, results showed that levels of PAHs in Hong Kong market fish was low and do not expect to cause any concern for human consumption. However, the levels of DDTs in fish samples ranged from 1.10 to 1018 ng/g wet wt, and based on a fish consumption rate of 142.2g/day to calculate the screening value of 14.4 ng/g wet wt for human consumption (USEPA, 2000. Guidance for assessing chemical contaminant, data for use in fish advisories, vol. 1: fish sampling and analysis, third ed. EPA 823-R-95-007. Office of Water, Washington, DC), there were 9 out of 20 (45%) muscle samples of freshwater fish species and 14 out of 20 (70%) muscle samples of marine fish species had elevated levels of DDTs exceeded the screening value. It was also suggested to use ventral muscle for detecting concentrations of persistent organic pollutants in fish.
对从香港市场购买的10种淡水鱼和10种海鱼的轴向肌肉和腹部肌肉进行了分析，检测其中的二氯二苯三氯乙烷（包括滴滴伊、滴滴滴和滴滴涕在内的总滴滴涕）和多环芳烃（PAHs）。在10种淡水鱼中，鳝鱼（黄鳝）腹部肌肉（125纳克/克湿重）和轴向肌肉（127纳克/克湿重）中的滴滴涕含量均显著高于其他品种。鲶鱼（胡子鲶）的多环芳烃浓度最高，腹部肌肉中为24.8纳克/克，轴向肌肉中为9.1纳克/克。对于海鱼，卵形鲳鲹的滴滴涕及其代谢物含量（腹部组织中为1018纳克/克，轴向组织中为409纳克/克湿重）显著高于所有其他海鱼品种。海鱼品种中多环芳烃的总体浓度为15.5 - 57.0纳克/克（轴向肌肉）和18.1 - 118纳克/克湿重（腹部肌肉），其中黄斑蓝子鱼和金线鲷分别在轴向肌肉和腹部肌肉中表现出最高的多环芳烃浓度。总体而言，结果表明香港市场鱼类中的多环芳烃含量较低，预计不会对人类食用造成任何担忧。然而，鱼类样本中的滴滴涕含量范围为1.10至1018纳克/克湿重，根据每日鱼类消费量142.2克计算人类食用的筛选值为14.4纳克/克湿重（美国环境保护局，2000年。评估化学污染物的指南，用于鱼类消费建议的数据，第1卷：鱼类采样和分析，第三版。EPA 823 - R - 95 - 007。华盛顿特区水办公室），20种淡水鱼肌肉样本中有9种（45%）以及20种海鱼肌肉样本中有14种（70%）的滴滴涕含量超过筛选值。研究还建议使用腹部肌肉来检测鱼类中持久性有机污染物的浓度。
