Carvalho Fernando P, Villeneuve Jean-Pierre, Cattini C, Rendón Jaime, Mota de Oliveira J
Nuclear and Technological Institute, Department of Radiological Protection and Nuclear Safety, E.N. 10, 2686-953 Sacavém, Portugal.
Chemosphere. 2009 Feb;74(7):988-95. doi: 10.1016/j.chemosphere.2008.09.092. Epub 2008 Nov 20.
The coastal lagoon system of Laguna de Terminos, Campeche, Mexico, a natural reserve since 1994, was investigated for contamination by agricultural and industrial chemical residues. Water, sediment and biota samples were analyzed for a wide variety of organochlorine and organophosphorus compounds. Chlorpyrifos was detected in water in concentrations up to 72 pgL(-1) and, amongst organochlorine compounds, summation operator PCB were measured averaging 1177 pgL(-1) and summation operator DDT 279 pgL(-1). Residues of chlorinated compounds were present in sediments and in biota with summation operator DDT averaging 190 pg g(-1) and 5876 pg g(-1) in sediment and oysters, respectively. Results show that the more widespread contaminants in the Laguna were residues of chlorinated hydrocarbons, such as DDTs, PCBs, endosulfan, and lindane. Concentrations of residues were not at an alarming level and were even lower than reported for other costal lagoons of the region. Still there is a need to implement control measures on persistent and bioaccumulative compounds that may reach the aquatic system of Laguna de Terminos.
自1994年起成为自然保护区的墨西哥坎佩切州特尔米诺斯湖沿海泻湖系统，针对农业和工业化学残留物污染情况展开了调查。对水、沉积物和生物群样本进行了多种有机氯和有机磷化合物的分析。在水中检测到毒死蜱，浓度高达72 pgL(-1)；在有机氯化合物中，多氯联苯总量平均为1177 pgL(-1)，滴滴涕总量为279 pgL(-1)。沉积物和生物群中存在氯化物残留，沉积物和牡蛎中的滴滴涕总量平均分别为190 pg g(-1)和5876 pg g(-1)。结果表明，该泻湖分布较广的污染物是氯化烃类残留物，如滴滴涕、多氯联苯、硫丹和林丹。残留物浓度未达到警戒水平，甚至低于该地区其他沿海泻湖的报告值。不过，仍有必要对可能进入特尔米诺斯湖水生系统的持久性和生物累积性化合物实施控制措施。
