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11.
Kaur Gurleenjot Singh Neetu Rajor Anita Arya Raj Kumar 《Environmental science and pollution research international》2023,30(4):8485-8499
Environmental Science and Pollution Research - The huge demand and consumption of DOX, its incomplete metabolism, and complex behavior in atmosphere are causing a great ecological issue, which... 相似文献
12.
Kaur Manpreet Mehta Surinder Kumar Kansal Sushil Kumar 《Environmental science and pollution research international》2023,30(4):8464-8484
Environmental Science and Pollution Research - Existence of pharmaceutical residues in water has endangered environmental pollution worldwide, which makes it ineludible to develop prospective... 相似文献
13.
Davinder Pal Singh Jasvirinder Singh Khattar Kanwaldeep Kaur Baljinder Singh Sandhu Yadvinder Singh 《毒物与环境化学》2013,95(7):1304-1318
This study deals with the toxicological impact of the herbicide anilofos on photosynthesis, respiration, nitrogen assimilation, and antioxidant system in a diazotrophic rice field cyanobacterium Anabaena torulosa. Treatment of anilofos (1.25, 2.5, and 5?mg?L?1) affected growth, photosynthetic pigments, photosynthesis, and respiration of the cyanobacterium. Although all the photosynthetic pigments were affected, a maximum effect of the herbicide was observed on phycocyanin (51% reduction) followed by the carotenoids. The effect of the herbicide on photosynthetic pigments resulted in 57% decrease in photosynthetic O2 evolution. Studies on the photochemical activity demonstrated that both photosystems (PS I and PS II) were affected by the herbicide. Decrease in the photosynthesis rate resulted in decreased nitrogen assimilation, as revealed by reduced nitrate (20%) and ammonium (26%) uptake and decreased activities of nitrogenase (63% decrease) and glutamine synthetase (22% decrease). This ultimately resulted in the reduced growth of the organism. Activities of superoxide dismutase, catalase, and peroxidase in the presence of anilofos increased by 1.8–3.5 times over control cultures. Proline content increased by 1.6 times, while the content of ascorbate decreased slightly. These results indicate that the organism was able to tolerate the herbicide stress by activating oxidative stress defense mechanism. 相似文献
14.
Jasleen Kaur 《毒物与环境化学》2013,95(5):699-721
Biomaterial industry is a widely growing field that is closely related to advanced materials. With development in fabrication techniques new materials are being created by researchers daily. The currently used biomaterials for biomedical applications have some limitations. This review examines those limitations such as corrosion, short fatigue life, less wear resistance, and inadequate mechanical properties. These limitations may lead to adverse effects. To overcome these limitations carbon-based nanomaterials may be incorporated such that these biomaterials reach the level of ideal biomaterials. Upgrade of biomaterials with graphene and carbon nanotubes (CNTs) needs to be done only after checking the safety profile of these materials. Biocompatibility of functionalized graphene and CNT is found to be adequate for the use in many applications such as drug delivery, biosensing and imaging, cancer therapeutics, and tissue regeneration whereas pristine graphene and CNT may produce adverse effects. The potential of carbon-based nanomaterials and graphene (and its derivatives) in overcoming those limitations and enhancing biological activities of ongoing biomaterials by acting as composites and coating material is examined. In addition, nanomaterials employ new techniques in biomedical application such as cancer therapy for more efficient results. 相似文献
15.
Journal of Material Cycles and Waste Management - The use of waste plastic as aggregate in cement composites can solve the problem of the disposal of waste plastics in a sustainable way, and it... 相似文献
16.
Kumar Jay Sodhi Amanpreet Kaur Bhanot Neeraj 《Environmental science and pollution research international》2022,29(48):72445-72460
Environmental Science and Pollution Research - Induction furnace dust (IFD) is a waste product of the alloy-making process whose disposal by landfill process becomes unsafe due to the presence of... 相似文献
17.
Kaur Ishnoor Behl Tapan Sehgal Aayush Singh Sukhbir Sharma Neelam Subramanian Vetriselvan Fuloria Shivkanya Fuloria Neeraj Kumar Sekar Mahendran Dailah Hamed Ghaleb Alsubayiel Amal M. Bhatia Saurabh Al-Harrasi Ahmed Aleya Lotfi Bungau Simona 《Environmental science and pollution research international》2022,29(45):67685-67703
Environmental Science and Pollution Research - The 2019 outbreak of corona virus disease began from Wuhan (China), transforming into a leading pandemic, posing an immense threat to the global... 相似文献
18.
Due to rapid industrialization and urbanization during last two decades, contamination of soils by heavy metals is on an increase globally. Lands under peri-urban agriculture are the worst affected. In NCT, Delhi about 14.4% of land area is chemically degraded. In order to take care of this problem, recently the Supreme Court of India ordered to shift various non-confirming (about 39,000 units) industries to regions outside NCT, Delhi. However in spite of this, there have been several reports and parliamentary debates on the phyto-toxicity and extensive accumulation of heavy metals in the region. Literature review revealed that the basis of these debates is a few studies on some point locations in/around Delhi. It was further observed that information on the distribution and extent of heavy metal pollution problem in the region was completely missing. The present study was thus basically aimed at assessing the spatial distribution/extent and type of heavy metal pollution in the study area, for enabling future designing of appropriate site-specific management measures by the decision makers.For this, detailed spatial information on bio-available heavy metal concentrations in the soils and surface/sub-surface waters of NCT (Delhi) was generated through actual soil/water surveys, standard laboratory methods and GIS techniques. The study showed that concentration of all micronutrients (viz. Zn: 0.05–0.18 ppm; Cu: in traces; Fe: 0–0.5 ppm; and Mn: 0–1.2 ppm) and most heavy metals (viz. Ni: 0–0.7 ppm; Pb: 0–0.15 ppm and Cd: in traces) in the surface/sub-surface irrigation waters were well within permissible limits. However Cr concentrations in irrigation waters of Alipur and Shahdara blocks were far above their maximum permissible limit of 1 ppm. It was further observed that Ni and Cr concentrations in the drinking waters of almost entire test area were far above maximum permissible levels of 0.02 and 0.01 ppm, respectively. Bio-available concentrations of several heavy metals (viz. Pb: 0.1–2 ppm; Cd: traces; Ni: 0.05–2 ppm and Cr: 0–0.4 ppm) in the study area soils were also observed to be well within the maximum permissible limits. However there were point Cu contaminations (5–10 ppm) in the sewage-sludge amended soils of vegetable growing areas near south Shahdara block. This was attributed to increased Cu availability due to oxidized acidic conditions generated by over-irrigation of agricultural lands. Available Mn concentrations in Kanjhawala, western Najafgarh and Alipur soils were also observed to be above maximum permissible limit of 10 ppm. This was observed to be mainly due to the geology (i.e. presence of Mn rich sedimentary rocks) and prevalence of reduced acidic conditions, due to paddy cultivation, in these areas. It was further observed that there is acute zinc (Zn) deficiency (< 0.6 ppm) in paddy growing soils of north Kanjhawala, Alipur and some parts of Najafgarh and Shahdara blocks due to extensive leaching of available Zn fractions to lower soil horizons. Similar available Zn deficiencies in high pH (8.5) soils of areas around Bamnoli village in E-Najafgarh block were also observed. 相似文献
19.
Daljeet Kaur Nishi K. Bhardwaj Rajesh Kumar Lohchab 《Environmental science and pollution research international》2017,24(30):23488-23497
Environmental degradation by industrial and other developmental activities is alarming for imperative environmental management by process advancements of production. Pulp and paper mills are now focusing on using nonwood-based raw materials to protect forest resources. In present study, rice straw was utilized for pulp production as it is easily and abundantly available as well as rich in carbohydrates (cellulose and hemicelluloses). Soda-anthraquinone method was used for pulp production as it is widely accepted for agro residues. Bleaching process during paper production is the chief source of wastewater generation. The chlorophenolic compounds generated during bleaching are highly toxic, mutagenic, and bioaccumulative in nature. The objectives of study were to use oxygen delignification (ODL) stage prior to elemental chlorine-free (ECF) bleaching to reduce wastewater load and to study its impact on bleached pulp characteristics. ODL stage prior to ECF bleaching improved the optical properties of pulp in comparison to only ECF bleaching. When ODL stage was incorporated prior to bleaching, the tensile index and folding endurance of the pulp were found to be 56.6 ± 1.5 Nm/g and 140, respectively, very high in comparison to ECF alone. A potential reduction of 51, 57, 43, and 53% in BOD3, COD, color, and AOX, respectively was observed on adding the ODL stage compared to ECF only. Generation of chlorophenolic compounds was reduced significantly. Incorporation of ODL stage prior to bleaching was found to be highly promising for reducing the toxicity of bleaching effluents and may lead to better management of nearby water resources. 相似文献
20.
Evaluation of hexachlorocyclohexane contamination from the last lindane production plant operating in India 总被引:3,自引:3,他引:0
Jit S Dadhwal M Kumari H Jindal S Kaur J Lata P Niharika N Lal D Garg N Gupta SK Sharma P Bala K Singh A Vijgen J Weber R Lal R 《Environmental science and pollution research international》2011,18(4):586-597