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Mohanraj R Solaraj G Dhanakumar S 《Environmental science and pollution research international》2011,18(5):764-771
Background
Airborne fine particulates (PM 2.5) and its associated polycyclic aromatic hydrocarbons (PAHs) are reportedly hazardous in urban environment due to the presence of multiple emission sources. 相似文献2.
Madhuri RJ Rangaswamy V 《Journal of environmental biology / Academy of Environmental Biology, India》2002,23(4):393-397
Selected insecticides, Chloropyrifos, Dichlorovos, Methyl parathion, Phorate and Methomyl, at concentrations ranging from 0 to 10 kg ha(-1) were tested for their non-target effects towards activity of phosphatases in two soils. In soil samples receiving 2.5 kg ha(-1) of the insecticides Dichlorovos, Phorate and Methomyl and also in soil samples receiving 5.0 kg ha(-1) of the insecticides, Chloropyrifos and Methyl parathion, the activity of phosphatase was significantly more at 20 days period of incubation and decreased progressively with increasing period of incubation. 相似文献
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Srinivasulu M Jaffer Mohiddin G Subramanyam K Rangaswamy V 《Environmental geochemistry and health》2012,34(3):365-374
The effect of selected pesticides, monocrotophos, chlorpyrifos alone and in combination with mancozeb and carbendazim, respectively,
was tested on nitrification and phosphatase activity in two groundnut (Arachis hypogeae L.) soils. The oxidation of ammonical nitrogen was significantly enhanced under the impact of selected pesticides alone and
in combinations at 2.5 kg ha−1 in black soil, and furthermore, increase in concentration of pesticides decreased the rate of nitrification, whereas in the
case of red soil, the nitrification was increased up to 5.0 kg ha−1 after 4 weeks, and then decline phase was started gradually from 6 to 8 weeks of incubation. The activity of phosphatase
was increased in soils, which received the monocrotophos alone and in combination with mancozeb up to 2.5 and 5.0 kg ha−1, whereas the application of chlorpyrifos singly and in combination with carbendazim at 2.5 kg ha−1 profoundly increased the phosphatase activity after 20 days of incubation, in both soils. But higher concentrations of pesticides
were either innocuous or inhibitory to the phosphatase activity. 相似文献
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G. Jaffer Mohiddin M. Srinivasulu N. R. Maddela B. Manjunatha V. Rangaswamy Alma Rosel Koch Kaiser Jessica Cristina Maisincho Asqui O. Darwin Rueda 《Environmental monitoring and assessment》2015,187(6):388
The objective of this study was to determine the effects of two insecticides, namely, acetamiprid and carbofuran on the enzymatic activities of arylamidase (as glucose formed from sinigrin) and myrosinase (as β-naphthylamine formed from l-leucine β-naphthylamide) in the black and red clay soils collected from a fallow groundnut (Arachis hypogaea L.) fields in the Anantapur District, Andhra Pradesh, India. The study was realized within the framework of the laboratory experiments in which the acetamiprid and carbofuran were applied to the soils at different doses (1.0, 2.5, 5.0, 7.5, 10.0 kg ha?1). Initially, the physicochechemical properties of the soil samples were analyzed. After 10 days of pesticide application, the soil samples were analyzed for the enzyme activities. Acetamiprid and carbofuran stimulated the arylamidase and myrosinase activities at lower concentrations after 10 days incubation. Striking stimulation in soil enzyme activities was noticed at 2.5 kg ha?1, persists for 20 days in both the soils. Overall, higher concentrations (5.0–10.0 kg ha?1) of acetamiprid and carbofuran were toxic or innocuous to the arylamidase and myrosinase activities. Nevertheless, the outcomes of the present study clearly indicate that the use of these insecticides (at field application rates) in the groundnut fields (black and red clay soils) stimulated the enzyme (arylamidase and myrosinase) activities. 相似文献
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Nair Ramya Ramankutty Rangaswamy Boobal Sarojini Bright Singh Isaac Joseph Valsamma 《Environmental science and pollution research international》2020,27(10):10541-10552
Environmental Science and Pollution Research - Bioaugmented zero water exchange aquaculture production systems (ZWEAPS) maintained with minimal or no water exchange prevent the ammonia accumulation... 相似文献
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