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51.
Kaushik CP Ravindra K Yadav K Mehta S Haritash AK 《Environmental monitoring and assessment》2006,122(1-3):27-40
Considering the mounting evidences of the effects of air pollution on health, the present study was undertaken to assess the ambient air quality status in the fast growing urban centres of Haryana state, India. The samples were collected for total suspended particulate matter (TSPM), respirable suspended particulate matter (PM10), sulfur dioxide (SO2), and oxides of nitrogen (NO2) during different seasons from 8 districts of Haryana during January, 1999 to September, 2000. The four types of sampling sites with different anthropogenic activities i.e. residential, sensitive, commercial and industrial were identified in each city. The ambient air concentration of TSPM and PM10 observed was well above the prescribed standards at almost all the sites. The average ambient air concentrations of SO2 and NO2 were found below the permissible limits at all the centres. Comparatively higher concentration of SO2 was observed during winter seasons, which seems to be related with the enhanced combustion of fuel for space heating and relatively stable atmospheric conditions. Air Quality Index (AQI) prepared for these cities shows that residential, sensitive and commercial areas were moderately to severely polluted which is a cause of concern for the residents of these cities. The high levels of TSPM and SO2 especially in winter are of major health concern because of their synergistic action. The data from Hisar city reveals a significant increase in the total number of hospital visits/admissions of the patients with acute respiratory diseases during winter season when the level of air pollutants was high. 相似文献
52.
A comparative study evaluated the acid, alkali, and heat-treated polyethylene biodegradation efficiency of Pseudomonas aeruginosa AMB-CD-1. The polyethylene (PE) pieces were separately treated with heat (50°C), acid (1N HCl), and alkali (1N NaOH) and then washed with water before use. All the treated samples were analyzed through thermogravimetric analysis. In addition, weight and temperature changes during the decomposition reactions were also measured and determined. In these treatments, the PE films of heat-treated and acid-treated low-density polyethylene (LDPE) indicated more significant weight loss at 120°C (48.99% and 40.75%, respectively) as compared to their control or untreated PE and alkali-treated LDPE (21.84% and 24.68%, respectively). A biodegradation assay was then conducted with treated and untreated LDPE films with P. aeruginosa AMB-CD-1 strain. Fourier transform infrared spectroscopy analysis revealed that the heat or acid-pretreated samples with isolate AMB-CD-1 displayed peaks at 2922.84, 2923.97, and 1450.31, 874.22 cm−1 for C–H stretching deformation vibration, CH2 scissoring vibration, –CHO stretching, and strong alkyl structure, respectively. Furthermore, the new peaks with a significant difference at 2500–2000 cm−1 (O═C═O, O–H stretching vibration: carboxylic acid) and 1500–1000 cm−1 (–CHO and C═O stretching) were noticed in the infrared spectral range of LDPE degradation. Modifications in the functional group provided evidence that biodegradation had impacted the chemical structure of the LDPE film. Additionally, it was demonstrated that pretreating LDPE films with heat or acid could speed up their biodegradation. 相似文献
53.
Mor Suman Negi Pooja Ravindra Khaiwal 《Environmental science and pollution research international》2019,26(24):24516-24531
Environmental Science and Pollution Research - Ammoniacal nitrogen is considered as one of the major pollutants of the leachate generated from the landfill site and has the potential to deteriorate... 相似文献
54.
Khayyam Nekouei Rasoul Pahlevani Farshid Golmohammadzadeh Rabeeh Assefi Mohammad Rajarao Ravindra Chen Yen-Hao Sahajwalla Veena 《Environmental science and pollution research international》2019,26(24):24417-24429
Environmental Science and Pollution Research - Despite attempts to enhance the recycling of waste printed circuit boards (WPCBs), the simultaneous recovery of major metals of WPCBs using an... 相似文献
55.
Murtaza G Haynes RJ Kim KR Zia MH Naidu R Belyaeva ON 《Environmental science and pollution research international》2012,19(3):636-645
Purpose
The study examines if a short period of reaction after addition of biosolids to soils can reduce the solubility and potential phytotoxicity of biosolid-borne Zn and Cu. 相似文献56.
Hydro-chemical Survey of Groundwater of Hisar City and Assessment of Defluoridation Methods Used in India 总被引:1,自引:0,他引:1
Ground water quality of Hisar city was assessed for its suitability for drinking purposes. Samples collected from the Bore-wells
(forms a part of municipal water supply) and handpumps (direct consumption) were analyzed for the various physico-chemical
parameters including pH, electrical conductivity, total dissolved salts, total hardness, total alkalinity, sodium, potassium,
calcium, magnesium, carbonate, bicarbonate, chloride and sulfate. The concentrations of magnesium, sodium, potassium, sulfate
and especially of chloride were found moderately higher than the WHO standards for the drinking water. Further a comparison
of fluoride (F−) levels in groundwater of various cities and towns of Haryana state was performed. The relatively higher concentrations of
F− in groundwater of Haryana raise the risk of fluorosis and hence groundwater must be used with proper treatment. Promising
defluoridation methods using locally available materials and technologies are discussed for the prevention and control of
fluorosis. Data were assessed statistically to find the suitable markers of ground water quality as an aid to monitoring groundwater
quality. 相似文献
57.
Goliya Ravindra Kumar Babu V. S. 《Journal of Material Cycles and Waste Management》2023,25(2):1050-1068
Journal of Material Cycles and Waste Management - The depletion of natural aggregate sources has increased exponentially due to the enormous demand for concrete. Therefore, the recycled aggregate... 相似文献
58.
Grewal Jyotika Kumar Vijay Rawat Hemant Gandhi Yashika Singh Ravindra Singh Arjun Babu Gajji Srikanth Narayanam Mishra Sujeet K. 《Environmental Chemistry Letters》2022,20(4):2487-2507
Environmental Chemistry Letters - Cancer is one of the most fatal diseases causing deaths of millions of people worldwide. Since actual cancer treatments are rarely efficient and often toxic, there... 相似文献
59.
Sneha Yadav Yashas Shivamurthy Ravindra Thinley Tenzin Prabagar Jijoe Samuel Puttaiah Shivaraju Harikaranahalli 《Environmental science and pollution research international》2022,29(45):67969-67980
Environmental Science and Pollution Research - Antibiotics in water system pose a human health risk due to the rise of antibacterial activity in the environmental web. Advanced oxidation processes... 相似文献