| 兰州地区典型有机污染物长距离迁移及其总持久性模拟 |
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| 引用本文： | 任婷,马祥林,杨志群,成刚,高宏. 兰州地区典型有机污染物长距离迁移及其总持久性模拟[J]. 环境科学研究, 2010, 23(1): 62-67 |
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| 作者姓名： | 任婷 马祥林 杨志群 成刚 高宏 |
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| 作者单位： | 兰州大学资源环境学院,西部环境教育部重点实验室,甘肃,兰州,730000;兰州大学化学化工学院,甘肃,兰州,730000 |
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| 基金项目： | 甘肃省自然科学基金项目(0803RJZA085);;兰州大学优秀博士立项项目 |
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| 摘 要： | 运用TaPL3模型研究了兰州半干旱地区典型有机污染物通过大气和水体的长距离迁移(LRT)及其总持久性(Pov),讨论了LRT和Pov之间的关系. 以2,3,7,8-TCDD为例,分别利用灵敏度和蒙特卡罗方法对模型的关键参数和输出结果的不确定性进行了研究. 结果显示:2,3,7,8-TCDD,γ-HCH,BaP和HCB在兰州地区通过大气的特征迁移距离(CTD)分别为126,934,117和13 307 km,Pov分别为1 421,1 082,1 413和3 949 d;通过水体的CTD分别为6 633,119 000,16 249和16 658 km,Pov分别为1 584,1 551,2 711和4 428 d,且污染物的LRT和Pov没有直接的联系. 同国外的研究相比,兰州地区的2,3,7,8-TCDD通过大气的CTD明显偏低,通过水体的CTD明显偏高,而Pov都明显偏高.
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| 关 键 词： | 兰州地区 有机污染物 TaPL3模型 长距离迁移 总持久性 |
| 收稿时间： | 2009-06-14 |
| 修稿时间： | 2009-08-17 |
Simulation of Long-Range Transport and Overall Persistence of Typical Organic Pollutants in Lanzhou Area |
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| REN Ting,MA Xiang-lin,YANG Zhi-qun,CHENG Gang and GAO Hong. Simulation of Long-Range Transport and Overall Persistence of Typical Organic Pollutants in Lanzhou Area[J]. Research of Environmental Sciences, 2010, 23(1): 62-67 |
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| Authors: | REN Ting MA Xiang-lin YANG Zhi-qun CHENG Gang GAO Hong |
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| Affiliation: | 1.Key Laboratory of Western China’s Environmental Systems of Ministry of Education, College of Resource and Environment, Lanzhou University, Lanzhou 730000, China2.College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The long-range transport (LRT) and overall persistence (P_(ov)) of typical organic pollutants through air and water in the semi-arid Lanzhou area were estimated by TaPL3 model.The relationship between LRT and P_(ov) was discussed.The model uncertainties and key parameters were examined and evaluated by a sensitivity study and the Monte Carlo method for 2,3,7,8-TCDD.Modeling results indicate that the characteristic travel distance (CTD) of 2,3,7,8-TCDD, γ-HCH, BaP and HCB in air and the P_(ov) values in Lanzhou area are 126, 934, 117 and 13,307 km, and 1,421, 1,082, 1,413 and 3,949 d, respectively.The CTD in water and the P_(ov) values are 6,633, 119,000, 16,249 and 16,658 km, and 1,584, 1,551, 2,711 and 4,428 d, respectively.There is no explicit relationship between LRT and P_(ov).Compared with foreign research, it was found that the CTD of 2,3,7,8-TCDD in air is markedly lower and distinctly higher in water.On the other hand, the P_(ov) in both air and water is obviously higher. |
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| Keywords: | Lanzhou area organic pollutants TaPL3 model long-range transport overall persistence |
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