کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8850877 | 1618765 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Environmental monitoring and risk assessment of organophosphate pesticides in aquatic ecosystems of north-west Bangladesh
ترجمه فارسی عنوان
نظارت بر محیط زیست و ارزیابی خطر سموم ارگانوفسفره در اکوسیستم های آبی شمال غربی بنگلادش
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The use of organophosphate pesticides (OPPs) to protect a variety of crops has increased in Bangladesh. OPPs may contaminate surrounding aquatic environments through several routes including spray drift, surface runoff and groundwater leaching. Since it is unknown how much OPP end ups in aquatic environment in Bangladesh, the objectives of the present study were to quantify the residues of ten most commonly used OPPs in water and sediment of water bodies of north-west Bangladesh and to assess their ecological risks for aquatic organisms. The risks of the pesticides in surface water and sediment were assessed using a first-tier risk quotient (RQ) approach. The higher-tier PERPEST model was used to refine the ecological risks of pesticides when RQ indicated a potential risk. Results showed the most frequently detected pesticides that appeared in high concentrations were chlorpyrifos, diazinon and quinalphos in surface water and sediment. The highest concentration of OPPs measured in water was 9.1â¯Î¼g chlorpyrifos/L (median of 1.95â¯Î¼g/L), while this was 51â¯Î¼g diazinon/kg dw (median of 11â¯Î¼g/kg dw) for sediment. Furthermore, results showed high acute and/or chronic RQs (RQâ¯>â¯1) in surface water and sediment for chlorpyrifos, diazinon, quinalphos, malathion and fenitrothion. The higher-tier PERPEST model confirmed risks of chlorpyrifos, diazinon, quinalphos and fenitrothion for aquatic insects, micro- and macro-crustaceans which were previously derived by RQ-based risk assessment for aquatic organisms. Furthermore, the results of the PERPEST model also indicated possible indirect effects of these pesticides on algae and macrophytes, community metabolism, rotifers and other macro-invertebrates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 206, September 2018, Pages 92-100
Journal: Chemosphere - Volume 206, September 2018, Pages 92-100
نویسندگان
Kizar Ahmed Sumon, Harunur Rashid, Edwin T.H.M. Peeters, Roel H. Bosma, Paul J. Van den Brink,