The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River : = The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River
The occurrence and accumulation of total mercury( T-Hg) in sediments collected from the Yarlung Zangbo River( YLZB),the Lhasa River,the Niyang River and the Palongzangbu River were analyzed and the soil samples simultaneously collected from the bank were employed as control. Meanwhile,pollution status and potential ecological risk of Hg were calculated and assessed using index of geoaccumulation( I_(geo)) and potential ecological risk assessment method( E_r) in this study. The results showed that the T-Hg concentrations in sediments at eight sections of YLZB ranged from 4. 23 to 48. 1 μg/kg with mean concentration of 25. 1 μg/kg,which was higher than background Hg value of soils in Tibet. T-Hg concentrations in sediments at three typical segments of YLZB were all significantly higher than those in soils collected from its bank( P < 0. 05).The I_(geo) and E_r indexes revealed that the T-Hg pollution levels were slight pollution in two sections and moderate ecological risk in six sections of YLZB. Hg pollution risks also existed in the sediments of partial sections of the Lhasa River and the Niyang River,and slightly moderate Hg contamination with high ecological risk was presented in Lhasa urban district. The level of Hg in sediments of YLZB showed a notable spatial distribution characteristic with a trend of increasing firstly and then declining. Human activities played an important role in increasing Hg content in sediments of the river..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019-06-15 2019 |
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| Erschienen: |
2019-06-15 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2019 |
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| Enthalten in: |
Meteorological and Environmental Research - (2019), 03 vom: 15. Juni, Seite 84-89 Original Letters: Enthalten in (DE-576)492523363 (DE-576)492523363 |
| Reihe: |
China Academic Journals (CAJ), A, 理工A(数学物理力学天地生) = Mathematics/ Physics/ Mechanics/ Astronomy |
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| Sprache: |
Chinesisch |
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| Weiterer Titel: |
The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River |
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| Beteiligte Personen: |
Qin Dongli [VerfasserIn] |
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| Links: |
oversea.cnki.net [lizenzpflichtig] |
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| Anmerkungen: |
Author info:Qin Dongli;Li Lei;Wu Song;Wang Nianmin;Wang Peng;Chen Zhongxiang;Ma Bo;Bai Shuyan;Gao Lei;Heilongjiang River Fishery Research Institute,Chinese Academy of Fishery Sciences;Key Laboratory of Control of Quality and Safety for Aquatic Products,Ministry of Agriculture |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
CAJ634339680 |
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| 245 | 1 | 0 | |a The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River |b = The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River |
| 246 | 3 | 1 | |a The Status Assessment and Preliminary Risk Assessment of Total Mercury in Sediments from Middle and Lower Reaches of the Yarlung Zangbo River |
| 264 | 1 | |c 2019-06-15 | |
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| 500 | |a Author info:Qin Dongli;Li Lei;Wu Song;Wang Nianmin;Wang Peng;Chen Zhongxiang;Ma Bo;Bai Shuyan;Gao Lei;Heilongjiang River Fishery Research Institute,Chinese Academy of Fishery Sciences;Key Laboratory of Control of Quality and Safety for Aquatic Products,Ministry of Agriculture | ||
| 520 | |a The occurrence and accumulation of total mercury( T-Hg) in sediments collected from the Yarlung Zangbo River( YLZB),the Lhasa River,the Niyang River and the Palongzangbu River were analyzed and the soil samples simultaneously collected from the bank were employed as control. Meanwhile,pollution status and potential ecological risk of Hg were calculated and assessed using index of geoaccumulation( I_(geo)) and potential ecological risk assessment method( E_r) in this study. The results showed that the T-Hg concentrations in sediments at eight sections of YLZB ranged from 4. 23 to 48. 1 μg/kg with mean concentration of 25. 1 μg/kg,which was higher than background Hg value of soils in Tibet. T-Hg concentrations in sediments at three typical segments of YLZB were all significantly higher than those in soils collected from its bank( P < 0. 05).The I_(geo) and E_r indexes revealed that the T-Hg pollution levels were slight pollution in two sections and moderate ecological risk in six sections of YLZB. Hg pollution risks also existed in the sediments of partial sections of the Lhasa River and the Niyang River,and slightly moderate Hg contamination with high ecological risk was presented in Lhasa urban district. The level of Hg in sediments of YLZB showed a notable spatial distribution characteristic with a trend of increasing firstly and then declining. Human activities played an important role in increasing Hg content in sediments of the river. | ||
| 610 | 2 | 4 | |a Heilongjiang River Fishery Research Institute,Chinese Academy of Fishery Sciences |
| 610 | 2 | 4 | |a Key Laboratory of Control of Quality and Safety for Aquatic Products,Ministry of Agriculture |
| 650 | 4 | |a 水体污染及其防治 | |
| 650 | 4 | |a 环境污染及其防治 | |
| 650 | 4 | |a 环境科学、安全科学 | |
| 650 | 4 | |a 环境质量分析与评价 | |
| 650 | 4 | |a 环境质量评价与环境监测 | |
| 650 | 4 | |a Environment Science and Resources Utilization | |
| 650 | 4 | |a 理工A(数学物理力学天地生) | |
| 650 | 4 | |a Mathematics/ Physics/ Mechanics/ Astronomy | |
| 650 | 4 | |a 理工B(化学化工冶金环境矿业) | |
| 650 | 4 | |a Chemistry/ Metallurgy/ Environment/ Mine Industry | |
| 650 | 4 | |a The Yarlung Zangbo River | |
| 650 | 4 | |a Total mercury | |
| 650 | 4 | |a Sediment | |
| 650 | 4 | |a Index of geoaccumulation | |
| 650 | 4 | |a Potential ecological risk index | |
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| 700 | 0 | |a Ma Bo |4 oth | |
| 700 | 0 | |a Bai Shuyan |4 oth | |
| 700 | 0 | |a Gao Lei |4 oth | |
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