Environmental Behavior of Chlorinated Naphthalenes

多氯联苯(PCN)是一种持久性有毒有机卤化物，如PCDD/DFS。他们最近把重点放在内分泌干扰物上。人们对它们的来源、环境样品中的含量以及环境行为知之甚少。据此，建立了多氯联苯的分析方法，并对日本环境污染状况进行了调查。最后，以松山等地采集的土壤、沉积物和人体脂肪组织样品为样本，对日本环境中的PCNS进行了有害和有毒化合物PCDD/DFS评价。结果，在所有被分析的样品以及多氯二苯并二恶英/二苯并呋喃中都检测到了多氯联苯。土壤受到多氯联苯的广泛污染。五氯环己烷同分异构体的残留分布主要分为两种类型，即以5种氯取代为主的山地和城市土壤类型和Padd…更多的Y型土壤，其中含有四个取代在萘环上的。在河流沉积物中检测到的PCN异构体图谱与在水稻土中检测到的图谱相似。据估计，在山区确定的多氯联苯是在燃烧过程中产生的。人体样本中PCN同系物的浓度高于在相同样本中检测到的PCDD/DFS浓度。爱民和大阪的样品中的含量有显著差异。两个地区的样品中测定的PCN同系物组成也不同。据估计，这种差异是由五氯苯酚的背景水平造成的，包括栖息地和食物。结论是五氯苯酚分布在松山和大阪的环境中。日本的环境被多氯联苯广泛污染可能是真的。然而，幸运的是，根据Giesy等人准备的论文中报告的毒性当量因子得出的毒性当量值，这些水平并不是那么高。较少

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