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Environmental Behavior of Chlorinated Naphthalenes

氯化萘的环境行为

基本信息

批准号：
10680504
负责人：
KAWANO Masahide
金额：
$ 1.92万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

Polychlorinated naphthalenes (PCNs) are persistent and toxic organohalogen compounds such as PCDD/DFs. They are recently focusing as endocrine disruptors. It is known a little about their sources and the levels in the environmental samples as well as environmental behavior. Accordingly, the analytical procedure of PCNs was developed and the status of environmental contamination of Japanese environment was investigated. Finally, it was evaluated that PCNs is harmful and toxic compounds as PCDD/DFs in the Japanese environment.The analysis was conducted with soil, sediment and human adipose tissue samples collected at Matsuyama and the other places of Japan. As the results, PCNs were detected in the all of the samples which were analysed as well as PCDD/DFs. The soils were contaminated widely with PCNs. The residue profiles of PCN congeners and isomers were mainly classified as two patterns, namely, a mountain and urban soil type which contains mainly five chlorines substituted and a padd … More y soil type which contains four ones substituted in the naphthalene ring. The PCN isomer patterns determined in river sediment are similar to the patterns of which were detected in the paddy soil samples. It is estimated that PCNs determined in mountain areas were produced under combustion processes. Concentrations of PCN congeners in human samples were higher than those of PCDD/DFs detected in the same samples. The significant difference was found between the levels in the samples from Ehime and Osaka. PCN homologue composition determined in the samples from both regions was also different. It is estimated that this difference cause by the background levels of PCNs including the habitat and diet.It is concluded that PCNs are spread over the Matsuyama and Osaka environment. It may be true that the Japan environment is contaminated with PCNs widely. However, fortunately, the levels are not so high based on the Toxic Equivalency values derived from Toxic Equivalent Factors reported by the paper prepared by Giesy et al. Less

多氯萘是持久性和有毒的有机卤素化合物，如多氯二苯并对二恶英/多氯二苯并呋喃。它们最近被关注为内分泌干扰物。目前对它们的来源、在环境样品中的含量以及环境行为的研究还不多。因此，开发了多氯化萘的分析程序，并调查了日本环境的环境污染状况。最后，通过对日本松山和其他地方采集的土壤、沉积物和人体脂肪组织样品进行分析，评估了多氯化萘在日本环境中作为PCDD/DFs是有害和有毒的化合物。结果，在所有分析的样品中均检测到多氯化萘以及多氯二苯并对二恶英/二苯并呋喃。土壤受到多氯化萘的广泛污染。多氯化萘同系物和同分异构体的残留分布主要分为两种类型，即以五氯代物为主的山地和城市土壤类型和以一氯代物为主的草甸土壤类型 ...更多信息 y土壤类型，萘环上含有四个取代基。河流沉积物中测定的多氯化萘异构体模式与水稻土样品中检测到的模式相似。据估计，在山区测定的多氯化萘是在燃烧过程中产生的。人体样本中多氯化萘同系物的浓度高于在相同样本中检测到的多氯二苯并对二恶英/二苯并呋喃。在爱媛县和大坂的样本中发现了显著差异。两个区域的样品中测定的多氯化萘同系物组成也不同。据估计，这种差异是由多氯化萘的背景水平，包括栖息地和饮食，得出结论，多氯化萘的扩散在松山和大坂的环境。日本的环境确实受到多氯化萘的广泛污染。然而，幸运的是，根据Giesy等人撰写的论文中报告的毒性等效因子得出的毒性等效值，水平并不那么高。