載入...
Persistence of endosulfan in selected areas of Kasaragod district, Kerala
The persistence of organochlorine pesticides in differ- ent environmental matrices is a matter of concern as the complete environmental fate of these chemicals is still an unexplored field. Water, soil and sediment samples were collected from selected panchayats of Kasaragod district, Kerala in four...
| 主要作者: | |
|---|---|
| 格式: | Printed Book |
| 出版: |
CURRENT SCIENCE,
2014
|
| 主題: | |
| 在線閱讀: | http://10.26.1.76/ks/005393.pdf |
| LEADER | 02301nam a22001457a 4500 | ||
|---|---|---|---|
| 100 | |a P. S. Harikumar; K. Jesitha; T. Megha and Kamalakshan Kokkal |9 24639 | ||
| 245 | |a Persistence of endosulfan in selected areas of Kasaragod district, Kerala | ||
| 260 | |b CURRENT SCIENCE, |c 2014 | ||
| 300 | |b VOL. 106, NO. 10, 25 MAY 2014 | ||
| 520 | |a The persistence of organochlorine pesticides in differ- ent environmental matrices is a matter of concern as the complete environmental fate of these chemicals is still an unexplored field. Water, soil and sediment samples were collected from selected panchayats of Kasaragod district, Kerala in four different phases to assess the contamination by endosulfan applied on cashew plantations. Endosulfan was detected in only 2 samples out of 22 water samples analysed during the second phase of sampling. Concentration of endosul- fan was below detection limit in all the 22 samples analysed during the third phase. A total of 14 sedi- ment samples were analysed and during the third phase, the concentration of endosulfan was below detection limit in all the samples. Out of 13 soil sam- ples, endosulfan was detected in 5 samples during the second phase and during the third phase it was detected in 3 samples. Endosulfan was detected in two soil samples from Panathadi and Muliyar Panchayats during the fourth phase. Also, comparison of results of the analysis of endosulfan during the third and fourth phase showed decrease in concentration in the three soil samples. The findings from the present study provide information on the current residue lev- els and persistence of organochlorine pesticide endo- sulfan in water, sediment and soil in selected areas of Kasaragod district. The study shows that combined toxic residues of endosulfan in the sediment and soil samples of selected areas of Kasaragod district were found to be persistent for a period of 1.5–2 years, but the persistence showed variations depending upon the climatic conditions and physico-chemical characteris- tics like pH, organic matter content and particle size of the soil in the area. | ||
| 650 | |a ORGANO CHLORINEPESTICIDE |9 24640 | ||
| 856 | |u http://10.26.1.76/ks/005393.pdf | ||
| 942 | |c KS | ||
| 999 | |c 75927 |d 75927 | ||
| 952 | |0 0 |1 0 |4 0 |7 0 |9 67910 |a MGUL |b MGUL |d 2015-12-13 |l 0 |r 2015-12-13 |w 2015-12-13 |y KS | ||