Dhanjal, Noorpreet Inder Kaur and Kaur, Paramjeet and Sud, Dhiraj and Cameotra, Swaranjit Singh (2014) Persistence and biodegradation of quinalphos using soil microbes. Water environment research : a research publication of the Water Environment Federation, 86 (5). pp. 457-61. ISSN 1061-4303
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The present study reports the degradation of the persistent and toxic organophosphate, quinalphos, by employing microorganisms that were already members of the natural soil community for degradation. Bacillus and Pseudomonas spp., both of which are capable of degrading quinalphos from aqueous streams, were isolated from different contaminated soils. Batch experiments were performed to determine the natural and induced biodegradation of quinalphos in the aqueous medium. The rate of degradation was analyzed through determination of residual concentration using UV-Vis spectrophotometer and high-performance liquid chromatography. A single peak of a metabolite was observed on the 160th day, and identified as dihydroxy quinalphos oxon by mass spectrometry. The presence of quinalphos and its metabolite in water over an extended period prompted the authors to investigate its induced biodegradation using indigenous microbes extracted from soil. For biodegradation studies, the isolated microbes were inoculated into minimal media with quinalphos for 17 days. The results revealed that > 80% of quinalphos was degraded in 17 days in the presence of isolated microbes, and no metabolite was observed during the biodegradation process.
| Item Type: | Article |
|---|---|
| Depositing User: | Dr. K.P.S.Sengar |
| Date Deposited: | 10 Feb 2015 06:18 |
| Last Modified: | 10 Feb 2015 06:18 |
| URI: | http://crdd.osdd.net/open/id/eprint/1590 |
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