Christoforidis Achilleas, Stamatis Nikolaos, Schmieder Klaus, Tsachalidis Efstathios
Technological Educational Institute, Department of Petroleum Technology and Natural Gas, 654 04 Kavala, Greece.
Chemosphere. 2008 Jan;70(4):694-702. doi: 10.1016/j.chemosphere.2007.06.060. Epub 2007 Aug 3.
Polychlorinated biphenyls (PCBs), hexachlorocyclohexane (HCH) isomers, dichlorodiphenyltrichloroethane (DDT) and its metabolites, other organochlorine pesticides such as hexachlorobenzene (HCB), chlordane compounds (CHLs, including trans-chlordane and cis- and trans-nonachlor) and the heavy metal mercury were quantified in muscle and liver of the European chub (Leuciscus cephalus, Linnaeus, 1758) and in the muscle of the barbel (Barbus cyclolepis, Heckel, 1837) at two sampling sites of the River Nestos, Greece. PCBs in muscle and DDTs in the liver tissues were the predominant organochlorinated contaminants. Among the PCBs, congeners 47 (up to 9.60 ng g(-1) wet wt.), 180 (up to 1.15 ng g(-1) wet wt.) and 190 (up to 1.50 ng g(-1) wet wt.) were the most frequent and abundant. The contamination degree by the sum of PCBs on the fish tissue samples from the River Nestos is lower or similar to PCB levels found in other ecosystems. Among the organochlorine pesticides, essentially only p,p'-DDD, p,p'-DDE and alpha-, beta- and gamma-HCH were found, with the former appearing at mean levels up to 30.71 ng g(-1) wet wt. From a public health standpoint, residue organochlorine pesticide levels from our work are considerably lower than the recommended tolerance limits. Finally, mean values of Hg in chub were significant lower (up to 31.04 ng g(-1) wet wt.) compared to those detected on barbel (up to 169.27 ng g(-1) wet wt.). The concentrations of Hg in fresh water fish from the River Nestos did not exceed WHO and US EPA health guidelines, and were suitable for human consumption.
在希腊内斯托斯河的两个采样点，对欧洲圆腹雅罗鱼（Leuciscus cephalus，林奈，1758）的肌肉和肝脏以及长吻鲍（Barbus cyclolepis，黑克尔，1837）的肌肉中的多氯联苯（PCBs）、六氯环己烷（HCH）异构体、二氯二苯三氯乙烷（DDT）及其代谢物、其他有机氯农药如六氯苯（HCB）、氯丹化合物（CHLs，包括反式氯丹和顺式及反式九氯）以及重金属汞进行了定量分析。肌肉中的多氯联苯和肝脏组织中的滴滴涕是主要的有机氯污染物。在多氯联苯中，同系物47（高达9.60 ng g⁻¹湿重）、180（高达1.15 ng g⁻¹湿重）和190（高达1.50 ng g⁻¹湿重）最为常见且含量最高。内斯托斯河鱼类组织样本中多氯联苯总量的污染程度低于或类似于其他生态系统中发现的多氯联苯水平。在有机氯农药中，基本上只发现了p,p'-滴滴滴、p,p'-滴滴伊以及α-、β-和γ-六氯环己烷，前者的平均含量高达30.71 ng g⁻¹湿重。从公共卫生角度来看，我们研究中残留的有机氯农药水平远低于推荐的耐受限度。最后，圆腹雅罗鱼中的汞平均值（高达31.04 ng g⁻¹湿重）显著低于长吻鲍中检测到的汞平均值（高达169.27 ng g⁻¹湿重）。内斯托斯河淡水鱼中的汞浓度未超过世界卫生组织和美国环境保护局的健康指南标准，适合人类食用。
