دورية أكاديمية
[Assessment model for heavy metal pollution in sediment based on trapezoidal fuzzy numbers and case study].
| العنوان: | [Assessment model for heavy metal pollution in sediment based on trapezoidal fuzzy numbers and case study]. |
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| المؤلفون: | Li F; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. fei371@sina.com, Huang JH, Zeng GM, Tang XJ, Bai B, Cai Q, Zhu HN, Liang J |
| المصدر: | Huan jing ke xue= Huanjing kexue [Huan Jing Ke Xue] 2012 Jul; Vol. 33 (7), pp. 2352-8. |
| نوع المنشور: | English Abstract; Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | Chinese |
| بيانات الدورية: | Publisher: Ke xue zhu ban she Country of Publication: China NLM ID: 8405344 Publication Model: Print Cited Medium: Print ISSN: 0250-3301 (Print) Linking ISSN: 02503301 NLM ISO Abbreviation: Huan Jing Ke Xue Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Beijing : Ke xue zhu ban she, |
| مواضيع طبية MeSH: | Fuzzy Logic* , Models, Theoretical*, Geologic Sediments/*chemistry , Metals, Heavy/*analysis , Water Pollutants, Chemical/*analysis, Lakes ; Risk Assessment |
| مستخلص: | Due to the practical shortcomings of the classical deterministic pollution assessment model, the theory of trapezoidal fuzzy numbers was introduced to the environmental assessment system. A fuzzy risk assessment model was built based on the geoaccumulation index and biotoxicity coefficients of heavy metals. Using the fuzzy pollution risk assessment model, the risk of heavy metal pollution was evaluated for the surface sediment of Dongting Lake. The results showed that the pollution risk in a descending order was Hg > Cd > Pb > Cu > Cr > Zn > As, with Hg,Cd and Pb being the priority pollutants in Dongting Lake. Both the intervals of possible values for the geoaccumulation indexes of heavy metals and their credible levels were calculated using this model. Compared with the results of the deterministic assessment model, the fuzzy pollution risk assessment model gave a better characetriztaion of the actual pollution status and spatial distribution difference of the heavy metals in the sediment of the studied region which is more objective and comprehensive. |
| المشرفين على المادة: | 0 (Metals, Heavy) 0 (Water Pollutants, Chemical) |
| تواريخ الأحداث: | Date Created: 20120926 Date Completed: 20131114 Latest Revision: 20161018 |
| رمز التحديث: | 20231215 |
| PMID: | 23002613 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 0250-3301 |
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