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21.
A. V. M. Subba Rao Arun K. Shanker V. U. M. Rao V. Narsimha Rao A. K. Singh Pragyan Kumari C. B. Singh Praveen Kumar Verma P. Vijaya Kumar B. Bapuji Rao Rajkumar Dhakar M. A. Sarath Chandran C. V. Naidu J. L. Chaudhary Ch. Srinivasa Rao B. Venkateshwarlu 《Environmental Modeling and Assessment》2016,21(1):17-30
22.
A new model is proposed for estimating horizontal dilution potential of an area using wind data. The mean wind speed and wind direction variation are used as a measure of linear and angular spread of pollutant in the atmosphere. The methodology is applied to monitored hourly wind data for each month of 1 year for wind data collected at Vadodara, Gujarat and monthly dilution potential is estimated. It is found that there is a gradual variation of horizontal dilution potential over a year with limited dilution during post monsoon period i.e., October and November and a high dilution in pre monsoon period i.e., May and June. This information can be used to design air quality sampling network and duration of sampling for source apportionment study. Air pollutant sampling during high dilution period can be carried out for identifying urban and rural dust and wind blown dust from mining activity. Air pollutant sampling during low dilution period can be carried out for capturing large amount of particulate matter from anthropogenic sources like elevated stack of furnace. 相似文献
23.
Atul K. Singh Sharad C. Srivastava Pankaj Verma Abubakar Ansari Ambrish Verma 《Environmental monitoring and assessment》2014,186(6):3823-3836
Monitoring of heavy metals was conducted in the Yamuna River considering bioaccumulation factor, exposure concentration, and human health implications which showed contamination levels of copper (Cu), lead (Pb), nickel (Ni), and chromium (Cr) and their dispersion patterns along the river. Largest concentration of Pb in river water was 392 μg L?1; Cu was 392 μg L?1 at the extreme downstream, Allahabad and Ni was 146 μg L?1 at midstream, Agra. Largest concentration of Cu was 617 μg kg?1, Ni 1,621 μg kg?1 at midstream while Pb was 1,214 μg kg?1 at Allahabad in surface sediment. The bioconcentration of Cu, Pb, Ni, and Cr was observed where the largest accumulation of Pb was 2.29 μg kg?1 in Oreochromis niloticus and 1.55 μg kg?1 in Cyprinus carpio invaded at Allahabad while largest concentration of Ni was 174 μg kg?1 in O. niloticus and 124 μg kg?1 in C. carpio in the midstream of the river. The calculated values of hazard index (HI) for Pb was found more than one which indicated human health concern. Carcinogenic risk value for Ni was again high i.e., 17.02?×?10?4 which was larger than all other metals studied. The results of this study indicated bioconcentration in fish due to their exposures to heavy metals from different routes which had human health risk implications. Thus, regular environmental monitoring of heavy metal contamination in fish is advocated for assessing food safety since health risk may be associated with the consumption of fish contaminated through exposure to a degraded environment. 相似文献
24.
Pandey J Verma A 《Journal of environmental biology / Academy of Environmental Biology, India》2004,25(1):81-87
The effects of catchment characteristics on chemical and biological properties of two freshwater tropical lakes of Udaipur, Rajasthan were investigated. The study indicated that the catchment characteristics influence, in a major way, the water chemistry and dredging, could be an effective measure for the restoration of dryland lakes. 相似文献
25.
26.
Chamundeeswari Munusamy Jeslin John Verma Madan Lal 《Environmental Chemistry Letters》2019,17(2):849-865
Environmental Chemistry Letters - Nanobiotechnology research has recently provided numerous basic and applied advances in the health sector. Nanocarriers have been developed for efficient drug... 相似文献
27.
Singh Lok Pratap Dhaka Rahul Kumar Ali Dilshad Tyagi Inderjeet Sharma Usha Banavath Srinivasrao Naik 《Environmental science and pollution research international》2021,28(26):34087-34107
Environmental Science and Pollution Research - Nano-titania (n-TiO2), due to its unique photocatalytic and hydrophobic properties, can be used to prepare self-cleaning cement-based smart building... 相似文献
28.
Verma Sunirmit Das Ranjan 《Environmental science and pollution research international》2023,30(1):310-321
Environmental Science and Pollution Research - It is suggested by many works on solar stills that water thickness should be kept as low as possible to reduce its thermal inertia and obtain best... 相似文献
29.
Srivastava Ankita Verma Digvijay 《Environmental science and pollution research international》2023,30(1):752-772
Environmental Science and Pollution Research - Sediment provides a stagnant habitat to microbes that accumulate organic matter and other industrial pollutants from the upper layer of the water. The... 相似文献
30.
Neelam Dwivedi Sandeep Kumar Ashish S. Verma Ghanshyam D. Gupta K.K. Dutta 《毒物与环境化学》2013,95(9):1572-1580
Furfural is an industrial compound used as a process intermediate and as a solvent; it poses a potential inhalation hazard in occupational settings. This study was carried out to find furfural-induced immunotoxicity in Wistar rat following inhalative exposure. The weights of thymus and lymph node were found decreased, while the weights of the liver and the adrenal gland were significantly increased following furfural exposure. Delayed-type hypersensitivity response was found decreased in furfural vapors-exposed animals when compared to that of control animals. The phagocytic index of peritoneal and alveolar exudates showed significant decrease and was most prominent (90%) in 30 days-exposed groups. The number of anti-rat anti-sheep red blood cell immunoglobulin M plaque forming cells of spleen got decreased in furfural-exposed groups in comparison to control. Taken together, this study indicates that inhalation of furfural induces immunotoxic manifestations that could lead to severe immunological disorders. 相似文献