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Mendeley readers
| Title |
Effects of anthropogenic activities on the heavy metal levels in the clams and sediments in a tropical river
|
|---|---|
| Published in |
Environmental Science and Pollution Research, November 2016
|
| DOI | 10.1007/s11356-016-7951-z |
| Pubmed ID | |
| Authors |
Koe Wei Wong, Chee Kong Yap, Rosimah Nulit, Mohd Suhaimi Hamzah, Soo Kien Chen, Wan Hee Cheng, Ali Karami, Salman Abdo Al-Shami |
| Abstract |
The present study aimed to assess the effects of anthropogenic activities on the heavy metal levels in the Langat River by transplantation of Corbicula javanica. In addition, potential ecological risk indexes (PERI) of heavy metals in the surface sediments of the river were also investigated. The correlation analysis revealed that eight metals (As, Co, Cr, Fe, Mn, Ni, Pb and Zn) in total soft tissue (TST) while five metals (As, Cd, Cr, Fe and Mn) in shell have positively and significantly correlation with respective metal concentration in sediment, indicating the clams is a good biomonitor of the metal levels. Based on clustering patterns, the discharge of dam impoundment, agricultural activities and urban domestic waste were identified as three major contributors of the metals in Pangsun, Semenyih and Dusun Tua, and Kajang, respectively. Various geochemical indexes for a single metal pollutant (geoaccumulation index (I geo), enrichment factors (EF), contamination factor (C f) and ecological risk (Er)) all agreed that Cd, Co, Cr, Cu, Fe, Mn, Ni and Zn are not likely to cause adverse effect to the river ecosystem, but As and Pb could pose a potential ecological risk to the river ecosystem. All indexes (degree of contamination (C d), combined pollution index (CPI) and PERI) showed that overall metal concentrations in the tropical river are still within safe limit. River metal pollution was investigated. Anthropogenic activities were contributors of the metal pollution. Geochemical indexes showed that metals are within the safe limit. |
Mendeley readers
The data shown below were compiled from readership statistics for 70 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Mexico | 1 | 1% |
| Unknown | 69 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 13 | 19% |
| Student > Bachelor | 10 | 14% |
| Student > Master | 8 | 11% |
| Researcher | 6 | 9% |
| Professor > Associate Professor | 4 | 6% |
| Other | 10 | 14% |
| Unknown | 19 | 27% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 21 | 30% |
| Agricultural and Biological Sciences | 7 | 10% |
| Earth and Planetary Sciences | 3 | 4% |
| Biochemistry, Genetics and Molecular Biology | 3 | 4% |
| Chemistry | 2 | 3% |
| Other | 8 | 11% |
| Unknown | 26 | 37% |