Environmental Behavior of Chlorinated Naphthalenes

多氯萘（pcn）是持久性和有毒的有机卤素化合物，如PCDD/DFs。它们最近的研究重点是内分泌干扰物。人们对它们的来源和环境样本中的水平以及环境行为知之甚少。据此，制定了PCNs的分析方法，并对日本环境污染状况进行了调查。最后，评估了PCNs在日本环境中是有害和有毒的PCDD/DFs化合物。分析是在松山和日本其他地方收集的土壤、沉积物和人体脂肪组织样本进行的。结果表明，在所有被分析的样品中均检测到PCNs以及PCDD/DFs。土壤被PCNs广泛污染。PCN同族和异构体的残留分布主要分为两种类型，即山地和城市土壤类型，主要含有5个氯代和多y土壤类型，在萘环中含有4个氯代。在河流沉积物中检测到的PCN同分异构体模式与在水稻土样品中检测到的模式相似。据估计，在山区测定的PCNs是在燃烧过程中产生的。人类样本中PCN同系物的浓度高于同一样本中PCDD/DFs的浓度。爱媛和大阪的样品中发现了显著差异。在两个地区的样品中测定的PCN同源物组成也不同。据估计，这种差异是由pcn的背景水平引起的，包括栖息地和饮食。结论是pcn分布在松山和大阪的环境中。日本的环境可能确实受到了广泛的pcn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，这些水平并没有那么高。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