权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Investigation on Contamination Source of Highly Toxic Dioxin Analogues in Taiwan

台湾高毒二恶英类似物污染源调查

基本信息

批准号：
08041185
负责人：
MIYATA Hideaki
金额：
$ 0.96万
依托单位：
Setsunan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1996
资助国家：
日本
起止时间：
1996 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041185/
关键词：
Dioxin analogues PCDD PCDF Coplanar PCB Sediment broadleaf tree Pollution Analysis コプラナーPCB

项目摘要

All dioxin analogues composing of polychlorinated dibenzo-podioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and coplanar PCBs (Co-PCBs) are very toxic. Even at environmental pollution level, it is revealed that they give a hormonal damage in women, and pointed out that they will occur immunosuppression and genital function damage in human. Therefore, in recent years, U.S.A., Canada and Europe countries have actively took measures to decrease the environemental pollution level. We already revealed that sediments in the estuary and the neighboring area of 12 rivers over northern to southern Taiwan, Republic of China, were heavily polluted by Dioxin analogues.In this study, 18 surface sediment samples from over the estuary to the upper stream area of river in northern Taiwan were analyzed in order to reveal the contamination source. The sediments from urban and the neighboring areas showed high pollution levels. This result suggest that many contamination sources might exist largel … More y in urban area.Dioxin analogues are generated as by-product from various combustion processes, and they are released to the atmosphere. In order to estimate the contamination source, we surveyed the air pollution using broadleaf tree (banyan tree) as a biomonitoring indicator. Fourteen samples from urban, industrial and local areas over northern to southern Taiwan were analyzed. The contamination level was remarkably high at urban and/or industrial areas such as Hsinchu city, Chiayi city, Kaohsiung city and Taipei city. While the local areas with a small pollution density showed the lower pollution level. Thus contamination tendency was also seen in a case of Japan. In Japan, Dioxin analogues generated from burning process in municipal waste incineration. However, the combustion amount of municipal waste is small in Taiwan. Hereafter, it is necessary to determine the true contamination sources.From above results, it is concluded that our monitoring techniques are good means for the evaluation of environmental contamination to the dioxin analogues. Less

由多氯二苯并二恶英(PCDDs)、多氯二苯并呋喃(PCDf)和共面多氯联苯(Co-PCbs)组成的所有二恶英类似物都具有很强的毒性。即使在环境污染水平上，也有研究表明，它们会对女性造成荷尔蒙损伤，并指出它们会对人类产生免疫抑制和生殖功能损害。因此，近年来，美国、加拿大和欧洲国家都在积极采取措施降低环境污染水平。针对台湾北部至南部12条河流的河口及邻近地区沉积物中二恶英类似物污染严重的现状，对台湾北部河口至上游地区的18个表层沉积物样品进行了分析，以揭示污染来源。城区及周边地区的沉积物污染水平较高。这一结果表明，许多污染源可能存在较大的…城市地区的二恶英类似物更多。二恶英类似物是各种燃烧过程的副产品，它们被释放到大气中。为了估算污染源，我们以阔叶树(榕树)为生物监测指标，对大气污染进行了调查。本研究分析了台湾北部至南部地区的14个样本，分别来自城市、工业和地方。在城市和/或工业区，如新竹市、嘉义市、高雄市和台北市，污染水平非常高。而污染密度较小的地区污染水平较低。因此，日本也出现了污染的趋势。在日本，城市垃圾焚烧过程中产生的二恶英类似物。然而，台湾的城市垃圾焚烧量很小。从以上结果可以看出，我们的监测技术是评价二恶英类似物环境污染的良好手段。较少