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21.
Wang Zhenyao Li Xuan Siddiqui Muhammad Ahmar Liu Huan Zhou Ting Zheng Lei Huang Siyu Gao Li Lin Carol Sze Ki Wang Qilin 《Environmental Chemistry Letters》2023,21(5):3023-3040
Environmental Chemistry Letters - Anaerobic digestion is a promising technology for energy recovery from secondary sludge, yet the presence of humic substances in wastewater limits anaerobic... 相似文献
22.
Furquan Ahmad Ansari Altaf Husain Khan Devendra Kumar Patel Huma Siddiqui Shachi Sharma Mohammad Ashquin Iqbal Ahmad 《Environmental monitoring and assessment》2010,170(1-4):491-497
In order to evaluate the exposure of the northern India rural population to polyaromatic hydrocarbon (PAH) inhalation, indoor pollution was assessed by collecting and analyzing the respirable particulate matter PM2.5 and PM10 in several homes of the village Bhithauli near Lucknow, UP. The home selection was determined by a survey. Given the nature of biomass used for cooking, homes were divided into two groups, one using all kinds of biomass and the second type using plant materials only. Indoor mean concentrations of PM2.5 and associated PAHs during cooking ranged from 1.19 ± 0.29 to 2.38 ± 0.35 and 6.21 ± 1.54 to 12.43 ± 1.15 μg/m3, respectively. Similarly, PM10 and total PAHs were in the range of 3.95 ± 1.21 to 8.81 ± 0.78 and 7.75 ± 1.42 to 15.77 ± 1.05 μg/m3, respectively. The pollutant levels during cooking were significantly higher compared to the noncooking period. The study confirmed that indoor pollution depends on the kind of biomass fuel used for cooking. 相似文献
23.
Plant-driven removal of heavy metals from soil: uptake,translocation, tolerance mechanism,challenges, and future perspectives 总被引:2,自引:0,他引:2
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25.
M K Siddiqui M F Rahman M Mahboob F Anjum M Mustafa 《Journal of environmental science and health. Part. B》1988,23(3):291-299
The species differences in the neurotoxic and delayed neurotoxic potential of monocrotophos (MCP) were assessed by determining the in vitro inhibition of brain Acetylcholinesterase (AChE) and Neuropathic target esterase (NTE) in rat, mice, chicken and pigeon. Based on I50 values, chicken brain AChE was found to be most sensitive to inhibition by MCP followed by rat whereas mice and pigeon were almost equally sensitive to AChE inhibition by MCP. The data on NTE inhibition by MCP in all the four species indicate the non-delayed neurotoxic nature of MCP. The results show that although there are many common features of the brain AChE and NTE of the four non-target organisms studied, certain species characteristics exist in their inhibition responses to MCP. 相似文献
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27.
Mahboob M Siddiqui MK Jamil K 《Journal of environmental science and health. Part. B》2000,35(6):739-749
Subacute oral toxicity of a newly developed phosphorothionate insecticide (2-butenoic acid-3-(diethoxy-phosphinothioyl) methyl ester), coded as RPR-2, was studied in male rats by oral (multiple) intubation of low (0.014 mg kg(-1) day(-1)), medium (0.028 mg kg(-1) day(-1)), and high (0.042 mg kg(-1) day(-1)) dose for 90 days. The medium and high dose produced toxic symptoms along-with some mortality (20%) occurred in the high dose treated rats. The medium and high doses caused significant inhibition in cytochrome P-450 activity in liver, lung, kidney and brain tissues at 45 and 90 days. The high dose caused significant decrease in cyt.b5 activity of all the four tissues at 45 and 90 days. Whereas, medium dose brought such effect in liver and lung at 45 and 90 days. Kidney and brain cyt.b5 activity decreased significantly at 90th day due to medium dose. Low dose also caused inhibition in cyt.b5 activity in brain at 90th day. Cytochrome P-450 reductase activity was decreased significantly in liver, 相似文献
28.
Jitendra Pandey Usha Pandey Anand V. Singh Deepa Jaiswal Ekabal Siddiqui Kavita Verma 《Chemistry and Ecology》2018,34(5):422-438
We investigated the possible drivers of the N:P stoichiometric shift and its relationship with micro-algal production of transparent exopolymeric particles (TEP) along a 35?km gradient of the Ganga River. The objective was to evaluate if the trade-off between N:P stoichiometry and production of TEP helps in maintaining water quality of the river. Mesocosm experiments were conducted to examine N:P-TEP linkages and its role in turbidity removal. In situ measurements did not show Si to be a limiting nutrient (N:Si?1.3). The TEP production increased with decreasing N:P ratio and peaked at N:P::6:1 with dominance of Aulacosira granulata and Fragilaria intermedia. Settling efficiency, turbidity removal and sedimentation of TEP, biogenic silica (BSi) and biomass all increased with decreasing N:P ratio proportionately to the amount of TEP produced in the mesocosm. The study demonstrates that trade-off between N:P stoichiometry and the production of TEP generates feedback to buffer the ecological impacts of nutrient pollution. 相似文献
29.
Huma Siddiqui Mohammad Ashquin Rajendra Prasad Jamal Mohammad Arif Trushakant N. Patil Iqbal Ahmad 《Environmental monitoring and assessment》2011,176(1-4):213-223
A large variety of ornamental and decorative items are manufactured from bone waste by various unorganized sectors in India. An initial survey indicated that workers were exposed at various phases of final product. The subjects (12 industrial units) were tested for total suspended particulate matter (TSPM), particulate matter <10 $\upmu $ m (PM10), and particulate matter <2.5 $\upmu $ m (PM2.5). Prevalent levels of TSPM ranged between 2.90 and 5.89 mg m???3. Respirable fractions of occupational dust as PM10 and PM2.5 were found in the range of 0.30?C2.08 and 0.26?C0.50 mg m???3, respectively. Cytotoxicity study was conducted using hemolysis as a sensitive marker. In an in vitro study, rat RBCs were exposed to the concentration of 25?C1,000 $\upmu $ g/ml for 15?C120 min. A considerable variation was observed in the hemolytic activity of samples collected from different areas. At 500 $\upmu $ g/ml concentration, the hemolytic activity (12 h) was found to be in the range of 18?C25%. Due to limitation in sample mass of respirable fractions, only one concentration (100 $\upmu $ g/ml/2 h) was used for comparative study on hemolysis of RBCs caused by PM10 and PM2.5. Interestingly, the hemolytic activity was more at PM2.5 than PM10 and TSPM. These results suggest that the respirable particles are capable of reaching deep into the respiratory system. The finding is significant notably when there are no standards available in occupationally exposed populations. This is the first such study. Data could be of importance to policy makers and regulators. 相似文献
30.
Siddiqui Shahida Anusha Wu Yuan Seng Saikia Trideep Ucak İlknur Afreen Maliha Shah Mohd Asif Ayivi Raphael D. 《Environmental Chemistry Letters》2023,21(5):2789-2823
Environmental Chemistry Letters - Issues of climate change, energy demand, and natural resources depletion are calling for circular methods to produce value-added products such as biomass, biofuel,... 相似文献