首页> 外文会议>International symposium on halogenated persistent organic pollutants >PBDES AND HBCD IN SEWAGE SLUDGE AND RIVER SEDIMENTS IN THE CZECH REPUBLIC: A 3-YEAR SURVEY (2006–2008)
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PBDES AND HBCD IN SEWAGE SLUDGE AND RIVER SEDIMENTS IN THE CZECH REPUBLIC: A 3-YEAR SURVEY (2006–2008)

机译:捷克共和国污水污泥和河流沉积物中的多溴二苯醚和六溴环十二烷:三年调查(2006-2008年)

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During a 3-year survey (2006–2008) 15 monitoring points of WWTP sludge and 13 monitoring points of river sediments were regularly investigated in October and November each year within the Czech Republic (CR) locations. Target brominated flame retardants (BFRs) includes polybrominated diphenyl ethers (PBDE congeners 28, 47, 49, 66, 85, 99, 100, 153, 154, 183, and 209) and hexabromocyclodecane (HBCD). The obtained mean values of stabilized WWTP sludge for the most abundant congeners BDE 209, BDE 47, BDE 99 and HBCD in 2006 were 255.7, 30.7, 29.8 and 12.2 μg/kg dw, respectively. The major changes were detected in 2008 in content of BDE 209 (decrease of mean value to 54.4 μg/kg dw) and in content of HBCD (increase mean value to 173.8 μg/kg dw) in comparison to 2006. The mean value of river sediments shows almost 97% decreasing of total content BFRs in sludge to compare years 2006 and 2008. Generally, BDE 209 decreased from 19.1 to < 1.2 μg/kg dw. HBCD content in median value still was not detected in river sediments in 2008 but some notice about its potential increasing is seen in average value and in maximal content. This study will be continued till 2010. These trends are expected in connection with new law-restrictions of PBDEs and usage of alternative flame retardant mixtures. Our data are comparable with results published in other studies.
机译:在为期3年的调查(2006-2008年)中,每年10月和11月在捷克共和国(CR)地点定期调查15个污水处理厂污泥监测点和13个河流沉积物监测点。目标溴化阻燃剂(BFR)包括多溴二苯醚(PBDE同系物28、47、49、66、85、99、100、153、154、183和209)和六溴环癸烷(HBCD)。 2006年,最丰富的同类物BDE 209,BDE 47,BDE 99和HBCD的稳定WWTP污泥获得的平均值分别为255.7、30.7、29.8和12.2μg/ kg dw。与2006年相比,2008年检测到的主要变化是BDE 209含量(均值降低至54.4μg/ kg dw)和HBCD含量(均值提高至173.8μg/ kg dw)。与2006年和2008年相比,沉积物中的BFR总含量降低了近97%。总体而言,BDE 209从19.1降至<1.2μg/ kg dw。 2008年在河流沉积物中仍未检测到六溴环十二烷的中值含量,但在平均值和最大含量方面都发现了六溴环十二烷潜在含量的增加。这项研究将持续到2010年。这些趋势与新的多溴二苯醚法规限制和替代阻燃剂混合物的使用有关。我们的数据与其他研究发表的结果具有可比性。

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