Instituto Español de Oceanografía (IEO), Oceanographic Centre of Murcia, Varadero 1, 30740, San Pedro del Pinatar, Murcia, Spain.
Instituto Español de Oceanografía (IEO), Oceanographic Centre of Murcia, Varadero 1, 30740, San Pedro del Pinatar, Murcia, Spain.
Chemosphere. 2017 Sep;182:584-594. doi: 10.1016/j.chemosphere.2017.05.025. Epub 2017 May 5.
The levels and trends of organochlorine contaminants were determined along the Spanish Mediterranean coast from 2000 to 2013 using mussel, Mytilus galloprovincialis, as bioindicator species. The highest levels of PCBs and DDTs were found at industrial and urban locations, and at areas under the influence of the mouth of major rivers. Dieldrin and t-NNC were commonly detected, while HCHs, aldrin, isodrin, endrin and HCB were at levels not detectable at many areas. Significant declines on the levels of DDTs were observed at most of the areas studied. Conversely, no trends or weak downtrends for PCBs were observed in the areas more polluted by local sources, and in most areas less polluted, where PCBs inputs may be primarily from the atmosphere. Upward trends for PCBs were found in some areas from the Alborán Sea, probably related to the inputs of PCBs through the Strait of Gibraltar. Background concentrations for PCBs and p,p'-DDE have been calculated for this Mediterranean region.
本研究于 2000 年至 2013 年期间，采用贻贝（Mytilus galloprovincialis）作为生物指示物种，沿西班牙地中海岸测定了有机氯污染物的浓度和趋势。在工业和城市地区以及主要河流入海口附近地区，检测到了最高水平的多氯联苯（PCBs）和滴滴涕（DDTs）。普遍检测到狄氏剂和 t-NNC，而六氯环己烷（HCHs）、艾氏剂、异艾氏剂、七氯和六氯苯（HCB）在许多地区的浓度则检测不到。在大多数研究区域，滴滴涕的水平均显著下降。相反，在受本地污染源污染的地区，以及在大多数污染较轻的地区，未观察到多氯联苯的趋势或微弱下降趋势，而这些地区的多氯联苯可能主要来自大气。在一些来自阿尔沃兰海（Alborán Sea）的地区，发现多氯联苯呈上升趋势，这可能与直布罗陀海峡多氯联苯的输入有关。本研究为该地中海地区计算了多氯联苯和 p,p'-滴滴涕的背景浓度。
