【作者】 计勇； 陆光华； 张洁；

【Author】 JI Yong 1,2 ,LU Guang-hua 1 ,ZHANG Jie 2 (1.College of Environmental Science and Engineering,Hohai University,Nanjing 210098,China; 2.Nanchang Institute of Technology,Nanchang 330099,China)

【机构】 河海大学环境科学与工程学院； 南昌工程学院水利工程系；

【摘要】 本研究以清洁地饲养鲫鱼为监测生物,采取主动生物监测法(ABM)对太湖北部梅梁湖与贡湖污染区进行生物监测。监测期间,分析各监测点常规水质指标及监测处表层沉积物中多环芳烃(PAHs)、多氯联苯(PCBs)、有机氯农药(OCPS)与重金属含量,同时定期(7d、14d、21d、28d)采集生物样,分析鲫鱼大脑组织及肌肉组织中总抗氧化能力(TAOC)活性。研究发现,脑组织TAOC活性同比肌肉组织TAOC活性值高出4倍左右,并且对污染物协迫反应敏感。实验第二周开始,脑组织TAOC呈显著诱导效应(P<0.05),最大值出现在有机氯污染严重的梅梁湖4号点,相比参照点值活性增加62.19%,其次是重金属污染严重的梅梁湖3号监测点,而污染最小的贡湖1号监测点TAOC变化较小。实验第四周,可能受自然天气影响,脑组织中TAOC呈抑制效应,诱导与抑制效应与污染物浓度呈现不同程度协调性。而肌肉组织中TAOC对污染物反应不敏感,不适合作轻污染区生物标志物。更多还原

【Abstract】 In this study,Carassius Auratus feeding in cleaning water were selected and putted respectively in Meiliang Lake and Gong Lake; the most contaminated area lied in northern part of Tai Lake,for biological monitoring with activity biomonitoring (ABM). During the Monitoring period,the commonly water quality indexes were analysis in the surfer water in the monitoring sites. Organic pollution maters,such as polycyclic aromatic hydrocarbons (PAHs),polychlorinated biphenyls (PCBs),organochlorine pesticides (OCPS) and Heavy metal contents in the surface sediments were analysis at the same time. The biological samples,Carassius Auratus,were collected at regular intervals (7 d,14 d,21 d,and 28 d). Total antioxidant capacity (TAOC) in brain and muscle tissue was analysis. The study found that the TAOC activity in brain tissue is 4 times higher than the value in the muscle tissue and is sensitive to pollutants,while the TAOC in muscle is not suitable for the biomarker to pollution. Just beginning of the field study,in the first week,the TAOC response in the brain tissue is inconspicuous compared to the reference point arranged in laboratory. However,proceeding in the second week of the field experiment,the TAOC in brain tissue was significantly induced (P<0.05),the maximum appears in the 4 th monitoring points of Meiliang Lake,the primary pollution is organic chlorine. Compared to the reference points,the TAOC value increase by 62.19 percent,followed by the 3 rd monitoring points of Meiliang Lake,the heavy metal pollution is serious. The 1 st monitor points of Gong Lake,for the effect of large-scale silt-removing and dredging projects,the pollution concentration is small and TAOC change is little. In the last week during the field experiment,may be effected by the natural weather,the TAOC inhibitory effect in brain was induced,with the inhibitory effect coordinated with pollutant concentration. TAOC in muscle tissue reaction is not sensitive to the pollutants,is not suitable for biomarkers in the light pollution.更多还原