“Shree YAMUNAJI Ka Swroop” in September 2010. - Photo Brij Life Line Wealfare. A Central Pollution Control Board report on River YAMUNA Maximum Pesticides in River Yamuna’s water in Manson Season. Pesticides characteristics of River Yamuna at Palla & impact locations in terms of five oregano-chlorine pesticides are appended at Annexure-V. The sources of pesticides in Yamuna River are generally non-points in nature. Agriculture is the main source of pesticide contamination in the river, which is not only very common in the catchment area of the Yamuna River but also all along the bank of the river also. During non-monsoon period, when the main river stream shrinks significantly the riverbed itself used for farming and thus directly contributing pesticides residue in the river. The BHC (benzene hoax chloride) is widely used pesticides and its concentration generally present in the study area. The maximum concentration of BHC 5517.79 ng/l was observed at Agra downstream (quarter-stream) in September, 2005. The remaining four pesticides i.e. Dieldrin, Aldrin, Endosulfan & DDT (Dichloro, Diphenyl, Trichloroethane) were generally not traceable. Maximum concentration of Aldrin 231.41 ng/l was observed at Nizamuddin bridge (midstream) in December, 2001 whereas the maximum level of Dieldrin 50.85 ng/l was observed at Mathura downstream (quarter stream) in March, 2005. The level of endosulfan was on its peak with 4591.08 ng/l at Mathura d/s (Midstream) in the month of June, 2002. The maximum concentration of DDT i.e. 1789.53 ng/l was observed in the month of September, 2005 at Agra downstream (quarter stream). The pesticides are contributed in the river by the surface run off of agricultural land through non-monsoon/ monsoon showers and seepage of irrigation water. Though, DDT is not presently in use for agricultural purpose, however, it is used to protect the public health by control of vectors. Moreover, the persistence of DDT in the environment is quite high & it remains in the environment for quite a long period of time. The gradual decrease in the level of studied pesticides as depicted at Annexure V may be attributed by the more and more use of less persistence pesticides in the catchment area of river Yamuna. The oregano chlorine pesticides (OCP) were also monitored at all non-impact locations during June month. BHC and Aldine in the year 2000, 2001 and 2003; Endosulfan in the year 2000 & 2001, Delran in the year 2000, 2001 and 2003 and DDT in the year 2003 were found not traceable. The range of BHC at non-impact locations varied from 4.37 μg/l (Kalanaur, 2002) to 980.34 μg/l (Mathura u/s, 2000). The range of Aldine observed at non impact location varied from 17.33 μg/l (Hathnikund, 1999) to 111.85 (Mathura u/s, 2002). The concentration range of Endosulfan was observed from 4.29 μg/l (Bateshwar, 1999) to 1394.83 μg/l (Mathura u/s, 2002). Dieldrin in the year 1999 was observed at only two locations i.e. Hathnikund (10.20 μg/l) and Kalanaur (2.87 μg/l). In the year 2002 again this pesticide was observed at two locations only i.e. Agra upstream (6.11 μg/l) and Bateshwar (4.33 μg/l). DDT was observed at few locations only with the range of 1.59 μg/l (Kalanaur, 1999) to 848.05 (Mazawali, 1999). In the year 2001 DDT was observed at Bateshwar only with the concentration of 28.22 μg/l. Oregano-phosphorous pesticide i.e. Marathon & Methyl parathion were simultaneously studied once in a year (June month) in the Yamuna River Stretch from Hathnikund to Juhika. The Marathon was not traceable whereas Methyl parathion was observed up to the year 2000 with maximum concentration of 520.95 ng/l at Kalanaur during the year 1999.
Posted on: Sat, 06 Jul 2013 07:44:20 +0000
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