Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Contamination at Metal Recovery Facilities, Open Burn Sites, and a Railroad Car Incineration Facility.
Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Contamination at Metal Recovery Facilities, Open Burn Sites, and a Railroad Car Incineration Facility.
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DOI：
10.1021/es00003a015
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发表时间：
1995-03
影响因子：
11.4
通讯作者：
M. Harnly;R. Stephens;C. McLaughlin;J. Marcotte;Myrto X Petreas;L. Goldman
中科院分区：
文献类型：
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作者：
M. Harnly;R. Stephens;C. McLaughlin;J. Marcotte;Myrto X Petreas;L. Goldman
土壤和火山灰表面样本(n=44)来自三个历史上以废铜为主要原料的金属回收设施，三个露天焚烧地点，可以看到铜回收的证据，以及一个有轨电车焚烧设施。多氯二苯并对二恶英(PCDD)和二苯并呋喃(PCDF)的浓度处于百万分之几的低范围，其中来自有轨电车设施的样品中的PCDF浓度明显较低。在铜线和废铝回收设施的飞灰中，多氯二苯并二恶英和多氯二苯并呋喃的浓度很高，分别为50ppm和460ppm。与引用的其他燃烧来源的比率一致，多氯二苯并二恶英与多氯二苯并二恶英的比率大多大于1。然而，在有轨电车焚烧设施的样本中观察到的比率较低(0.4)。OCDF和OCDD与2，3，7，8-TCDD毒性当量(TEQ)显著相关。这些同系物可以进行廉价的分析，并可在类似地点和设施中用作指示性化学品。有必要对世界各地的金属回收设施和露天焚烧地点进行进一步调查。
Soil and ash surface samples (n= 44) were collected from three historical metal recovery facilities where copper scrap was a dominant feed stream, three sites of open burning where evidence of copper recovery was visible, and from a railroad car incineration facility. Concentrations of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) are in the low parts per billion range with PCDF concentrations significantly lower in samples from the railroad car facility. In fly ash from a copper wire and aluminum scrap recovery facility, PCDD and PCDF concentrations are high, 50 and 460 ppm. Consistent with that cited for other combustion sources, ratios of PCDF to PCDD are mostly greater than 1. However, a lower ratio (0.4), is observed in samples from the railroad car incineration facility. OCDF and OCDD are significantly correlated with 2,3,7,8-TCDD toxicity equivalents (TEQ). These congeners may be inexpensively analyzed and may be useful as indicator chemicals at similar sites and facilities. Further investigations of metal recovery facilities and open burn sites worldwide are necessary.