...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Isomer-Specific Determination and Toxic Evaluation of Polychlorinated Biphenyls, Polychlorinated/brominated Dibenzo-p-dioxins and Dibenzofurans, Polybrominated Biphenyl Ethers, and Extractable Organic Halogen in Carp from the Buffalo River, New York
【24h】

Isomer-Specific Determination and Toxic Evaluation of Polychlorinated Biphenyls, Polychlorinated/brominated Dibenzo-p-dioxins and Dibenzofurans, Polybrominated Biphenyl Ethers, and Extractable Organic Halogen in Carp from the Buffalo River, New York

机译：纽约布法罗河鲤鱼中多氯联苯，多氯/溴化二苯并对二恶英和二苯并呋喃，多溴联苯醚和可萃取有机卤素的异构体特异性测定和毒性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Concentrations of PCB isomers, polychlorinated/ brominated dibenzo-p-dioxins (PCDDs/PBDDs) and dibenzofurans (PCDFs/PBDFs), polybrominated biphenyl ethers (PBBEs), and total extractable organic halogen (EOX) were determined in carp (Cyprinus carpio) of three age classes collected from the Buffalo River, New York. Total PCBs concentrations exceeded the United States Food and Drug Administration's tolerable level of 2μg/g (wet wt) in all the three age classes. Concentration ranges of total PCDDs and PCDFs were 27-146 and 22-99 pg/g, respectively. Among several of the 2,3,7,8-substituted isomers detected, OCDD and OCDF were the most predominantly noticed congeners. Noticeable concentrations of PBBEs were found with a major contribution from tetra-BBEs. Extractable organochlorines (EOCl) were the highest in the total EOX family followed by organobromines and organoiodines. The known organochlorines such as PCBs and DDT accounted for 13-58% of the EOCI, suggesting the presence of considerable levels of other unknown organochlorines. The 2,3,7,8-TCDD equivalents of coplanar PCBs, dioxins, and furans in carp muscle were between 45 and 108 pg/g, with 38— 48% of the toxicity exerted by mono-ortho-PCBs. The estimated allowable con- sumption rates of carp based on the risk assessment method were much lowerthan the actual consumption values available for the Great Lakes states. Elevated concentrations of PCB isomers other than dioxins and furans suggest the need to protect humans from the consumption of PCB-contaminated carp from the Buffalo River.
机译：在以下地区的鲤鱼（鲤）中测定了PCB异构体，多氯/溴化二苯并对二恶英（PCDDs / PBDDs）和二苯并呋喃（PCDFs / PBDFs），多溴联苯醚（PBBEs）和总可萃取有机卤素（EOX）的浓度。从纽约布法罗河收集的三个年龄段。在所有三个年龄段中，PCBs的总浓度均超过了美国食品药品监督管理局的容许水平2μg/ g（湿重）。总PCDD和PCDF的浓度范围分别为27-146 pg / g和22-99 pg / g。在检测到的2,3,7,8个取代异构体中，OCDD和OCDF是最显着的同类物。发现四溴联苯醚的浓度显着高于PBBEs。在整个EOX家族中，可萃取的有机氯（EOCl）最高，其次是有机溴和有机碘。诸如PCBs和DDT之类的已知有机氯占EOCI的13-58％，表明存在大量其他未知有机氯。鲤鱼肌肉中共面多氯联苯，二恶英和呋喃的2,3,7,8-TCDD当量为45至108 pg / g，单原位多氯联苯所产生的毒性为38-48％。根据风险评估方法，鲤鱼的估计允许消费量远低于大湖州的实际消费量。除二恶英和呋喃外，PCB异构体的浓度升高表明需要保护人类免受水牛河中被PCB污染的鲤鱼的食用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号