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Study on Dynamic Behavior and Contamination Reduction of Antimony Being around a Smelter

冶炼厂周围锑动态行为及减污研究

基本信息

批准号：
10555193
负责人：
HORIUCHI Masato
金额：
$ 8.32万
依托单位：
DAIDO INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10555193/
关键词：
Antimony soil-water-air system evaluation of health risk dynamic behavior physicochemical form soil remediation water pollution control smelter 形態分析 ICP-MS リスク評価体内代謝モデル存在形態土壌作物大気地下水

项目摘要

The objectives of this study is to determine the level of environmental contamination by antimony around a smelter at the present time through a field survey, to discuss about dynamic behaviors of antimony in water-air-soil-plant system, to evaluate the potential health risks of residents near the smelter and to find ways to reduce its risk. The results obtained in this study can be summarized as follows ; (1) Antimony concentrations in farm soils around an antimony smelter were still considerably higher than the natural abundance. (2) Antimony concentrations in farm products were much lower than that in farm soils. Antimony fallout may contribute the high concentration observed in leaf. (3) Except for children, antimony concentrations in urine of residents around the smelter are larger than the references. (4) Antimony concentrations in a human body of the resident were estimated two to ten times larger than the reference Japanese. (5) The critical pathways of antimony exposure to residents around the smelter were identified to be a vegetable intake and inhalation. For the children, accidental soil ingestion must be taken into an account as a potentially high exposure pathway. (6) Antimony concentrations in lung of residents might excess the concentration in which man will onset a lung cancer. (7) The almost all antimony in solution was stable in antimony (V) form, and that the antimony was dissolved also in acidic soil solution different from the previous reports. (8) The migration of antimony in soils is independent on its oxidation state, and that its physicochemical form depend largely on the coexisting ions in solution..

本研究的目的是通过现场调查确定目前冶炼厂周围环境的锑污染程度，探讨锑在水-空气-土壤-工厂系统中的动态行为，评估冶炼厂附近居民的潜在健康风险，并寻找降低风险的方法。本研究获得的结果可总结如下： (1) 锑冶炼厂周围农田土壤中锑浓度仍远高于自然丰度。 (2)农产品中锑浓度远低于农田土壤。锑沉降物可能导致叶子中观察到的高浓度。（3）除儿童外，冶炼厂周边居民尿液中锑浓度均高于参考值。 (4) 居民体内的锑浓度估计比参考日本人高出两到十倍。 (5)确定冶炼厂周边居民锑暴露的关键途径是蔬菜摄入和吸入。对于儿童来说，必须将意外摄入土壤视为潜在的高暴露途径。 (6)居民肺部的锑浓度可能超过导致肺癌的浓度。 (7)溶液中几乎所有的锑都以锑(V)形式稳定，并且与以前的报道不同，锑也溶解在酸性土壤溶液中。 (8) 土壤中锑的迁移与其氧化态无关，其物理化学形态很大程度上取决于溶液中共存的离子。