Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia
Pesticide contamination in the environment is a contemporary global issue. As agricultural production through crop planting in Malaysia now supports both energy and food productions, the concentration and distribution of pesticides in surface water may have changed. Therefore, this study assesses th...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer Netherlands
2016
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/53941/1/Surface%20water%20organophosphorus%20pesticides%20concentration%20.pdf |
| _version_ | 1825930946591850496 |
|---|---|
| author | Wee, Sze Yee Tuan Omar, Tuan Fauzan Aris, Ahmad Zaharin Lee, Yunho |
| author_facet | Wee, Sze Yee Tuan Omar, Tuan Fauzan Aris, Ahmad Zaharin Lee, Yunho |
| author_sort | Wee, Sze Yee |
| collection | UPM |
| description | Pesticide contamination in the environment is a contemporary global issue. As agricultural production through crop planting in Malaysia now supports both energy and food productions, the concentration and distribution of pesticides in surface water may have changed. Therefore, this study assesses the concentration and distribution of organophosphorus pesticides (quinalphos, diazinon and chlorpyrifos) contamination in the Langat River, Selangor. The Langat River Basin is one of the most populated river basins in Malaysia. As a result, it is surrounded by various environmental stresses of which agricultural activity is a dominant cause. An analytical method has been developed and optimised based on solid-phase extraction and high-performance liquid chromatography, coupled with a diode array detector (SPE–HPLC–DAD). This method allowed for the determination and quantification of selected organophosphorus pesticides. The optimised method displays a high mean recovery for both quinalphos and diazinon (100.21 and 100.15 %, respectively) but relatively low recovery for chlorpyrifos (32.40 %). The low recovery of chlorpyrifos is due to limitations in the determination of multi-residues in a single analytical run, optimisation of chromatographic conditions and the recovery of each compound. The method detection limit was found to be 0.003 μg/L for quinalphos and diazinon, and 0.006 μg/L for chlorpyrifos. Sample analyses revealed the occurrence of quinalphos, diazinon and chlorpyrifos in the Langat River with chlorpyrifos found to have the highest mean concentration of 0.0202 μg/L. The quinalphos and diazinon sample concentrations were 0.0178 μg/L and 0.0094 μg/L, respectively. The concentrations of organophosphorus pesticides in this monitoring study were found to be below the Maximum Contaminant Levels (MCLs) established under the European Union (Drinking Water) Regulation 2014. This study was the first to detect concentrations of quinalphos and diazinon in the Langat River, Selangor. |
| first_indexed | 2024-03-06T09:19:17Z |
| format | Article |
| id | upm.eprints-53941 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:19:17Z |
| publishDate | 2016 |
| publisher | Springer Netherlands |
| record_format | dspace |
| spelling | upm.eprints-539412018-02-22T02:15:51Z http://psasir.upm.edu.my/id/eprint/53941/ Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia Wee, Sze Yee Tuan Omar, Tuan Fauzan Aris, Ahmad Zaharin Lee, Yunho Pesticide contamination in the environment is a contemporary global issue. As agricultural production through crop planting in Malaysia now supports both energy and food productions, the concentration and distribution of pesticides in surface water may have changed. Therefore, this study assesses the concentration and distribution of organophosphorus pesticides (quinalphos, diazinon and chlorpyrifos) contamination in the Langat River, Selangor. The Langat River Basin is one of the most populated river basins in Malaysia. As a result, it is surrounded by various environmental stresses of which agricultural activity is a dominant cause. An analytical method has been developed and optimised based on solid-phase extraction and high-performance liquid chromatography, coupled with a diode array detector (SPE–HPLC–DAD). This method allowed for the determination and quantification of selected organophosphorus pesticides. The optimised method displays a high mean recovery for both quinalphos and diazinon (100.21 and 100.15 %, respectively) but relatively low recovery for chlorpyrifos (32.40 %). The low recovery of chlorpyrifos is due to limitations in the determination of multi-residues in a single analytical run, optimisation of chromatographic conditions and the recovery of each compound. The method detection limit was found to be 0.003 μg/L for quinalphos and diazinon, and 0.006 μg/L for chlorpyrifos. Sample analyses revealed the occurrence of quinalphos, diazinon and chlorpyrifos in the Langat River with chlorpyrifos found to have the highest mean concentration of 0.0202 μg/L. The quinalphos and diazinon sample concentrations were 0.0178 μg/L and 0.0094 μg/L, respectively. The concentrations of organophosphorus pesticides in this monitoring study were found to be below the Maximum Contaminant Levels (MCLs) established under the European Union (Drinking Water) Regulation 2014. This study was the first to detect concentrations of quinalphos and diazinon in the Langat River, Selangor. Springer Netherlands 2016-12 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/53941/1/Surface%20water%20organophosphorus%20pesticides%20concentration%20.pdf Wee, Sze Yee and Tuan Omar, Tuan Fauzan and Aris, Ahmad Zaharin and Lee, Yunho (2016) Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia. Exposure and Health, 8 (4). pp. 497-511. ISSN 2451-9766; ESSN: 2451-9685 https://link.springer.com/article/10.1007/s12403-016-0214-x Organophosphorus pesticides; Contamination; Surface water; Solid-phase extraction; HPLC–DAD; Langat River Basin 10.1007/s12403-016-0214-x |
| spellingShingle | Organophosphorus pesticides; Contamination; Surface water; Solid-phase extraction; HPLC–DAD; Langat River Basin Wee, Sze Yee Tuan Omar, Tuan Fauzan Aris, Ahmad Zaharin Lee, Yunho Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title | Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title_full | Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title_fullStr | Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title_full_unstemmed | Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title_short | Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia |
| title_sort | surface water organophosphorus pesticides concentration and distribution in the langat river selangor malaysia |
| topic | Organophosphorus pesticides; Contamination; Surface water; Solid-phase extraction; HPLC–DAD; Langat River Basin |
| url | http://psasir.upm.edu.my/id/eprint/53941/1/Surface%20water%20organophosphorus%20pesticides%20concentration%20.pdf |
| work_keys_str_mv | AT weeszeyee surfacewaterorganophosphoruspesticidesconcentrationanddistributioninthelangatriverselangormalaysia AT tuanomartuanfauzan surfacewaterorganophosphoruspesticidesconcentrationanddistributioninthelangatriverselangormalaysia AT arisahmadzaharin surfacewaterorganophosphoruspesticidesconcentrationanddistributioninthelangatriverselangormalaysia AT leeyunho surfacewaterorganophosphoruspesticidesconcentrationanddistributioninthelangatriverselangormalaysia |