Concentrations and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans in soils from Korea.
Concentrations and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans in soils from Korea.
复制标题
韩国土壤中多氯二苯并-对-二恶英和二苯并呋喃的浓度和分布。
DOI：
10.1021/es020531i
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发表时间：
2002
影响因子：
11.4
通讯作者：
T. Wakimoto
中科院分区：
文献类型：
--
作者：
S. Im;K. Kannan;J. Giesy;M. Matsuda;T. Wakimoto
从韩国昌原市和马山市采集土壤样本，分析多氯二苯并对二恶英和二苯并呋喃（PCDDs/DFs）。在所有样品中几乎检测到了所有的四氯到八氯PCDDs/DFs，包括17种2，3，7，8-取代的PCDDs/DFs。土壤中多氯二苯并对二恶英/二苯并呋喃和2，3，7，8-四氯二苯并对二恶英当量的总浓度分别为35至121，400皮克/克（干重）和0.2至3720皮克/克（I-TEQ）。根据德国和美国制定的毒性当量浓度准则，23个土壤样本中有9个（占分析样本总数的39%）预计不会对人类健康造成危害。其余61%的土壤需要采取措施，如调查来源识别，土壤净化和/或土壤清除。多氯二苯并对二恶英/二苯并呋喃的总浓度大于或接近四个工业场地，这是与钢铁工业，石化相关的行业，工业废物焚烧，比其他地区。这表明存在潜在的污染源。从距离一个工业综合体内的露天焚烧工业废物焚化炉50米处收集的土壤受到严重污染，多氯二苯并对二恶英/二氯二苯并呋喃的总浓度为121，400皮克/克（干重）。在一座海拔200米的山顶的土壤中也检测到了多氯二苯并对二恶英/二苯并呋喃，这表明多氯二苯并对二恶英/二苯并呋喃通过大气迁移从点源地区广泛扩散。土壤中多氯二苯并呋喃的同系物分布和相对比例表明，Kanechlors等商用多氯联苯制剂可能是来源之一。在许多地方的土壤中检测到的多氯二苯并对二恶英/多氯二苯并呋喃异构体范围很广，这也表明，除了商用多氯联苯之外，还有多种来源，如焚烧汽车轮胎、废电线、塑料、纸张等工业废物，以及汽车废气的排放。
Soil samples were collected from Changwon and Masan Cities, Korea, and analyzed for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/DFs). Nearly all tetra- through octachlorinated PCDDs/DFs including the 17 2,3,7,8-substituted PCDDs/DFs were detected in all samples. Total concentrations of PCDDs/DFs and of 2,3,7,8-tetrachlorinated dibenzo-p-dioxin (TeCDD) equivalents (TEGs) in soils ranged from 35 to 121,400 pg/g, dry weight, and from 0.2 to 3720 pg of I-TEQ/g, respectively. On the basis of guidelines for TEQ concentrations established in Germany and the United States, 9 of 23 soil samples (39% of the total samples analyzed) could not be expected to pose human health hazards. The rest of 61% of soils need measures such as investigations of source identification, soil decontamination, and/or soil removal. Total concentrations of PCDDs/DFs were greater at or near four industrial sites, which are concerned with the steel industry, petrochemical-related industry, and industrial waste incineration, than other areas. This indicates the presence of potential source areas. Soil collected from a site 50 m from an open-burning industrial waste incinerator in an industrial complex was heavily contaminated, containing a total concentration of PCDDs/DFs of 121,400 pg/g, dry weight. PCDDs/DFs were also detected in soils from the top of a 200 m mountain indicating a wide dispersal of PCDDs/DFs by atmospheric transport from point source areas. The congener pattern and relative proportions of PCDFs in soils suggest that commercial PCB preparations such as Kanechlors may be one of the sources. The wide range of PCDD/DF isomers detected in soils from many locations also suggests a multitude of sources, in addition to commercial PCBs, such as incineration of industrial wastes such as car tires, scrap wires, plastics, papers, and emission of automobile exhaust.