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81.
Malik Vivek Singh Ravindra Khaiwal Singh Meenu 《Environmental science and pollution research international》2021,28(47):66519-66521
Environmental Science and Pollution Research - 相似文献
82.
Zhao-Feng Yuan Williamson Gustave Raju Sekar Jonathan Bridge Jia-Yue Wang Wei-Jia Feng Bin Guo Zheng Chen 《环境科学学报(英文版)》2021,33(4):1-10
The redox-sensitive elements, such as iron, manganese, sulfur, phosphorus, and arsenic, shift their speciation every millimeter (mm) across the soil-water interface in the flooded soil environments. Monitoring of element speciation at this high-resolution (HR) within the SWI is still difficult. The key challenge lies in obtaining sufficient porewater samples at specific locations along the soil gradient for downstream analysis. Here with an optimized inductively coupled plasma mass spectrometry (ICP-MS) method and a HR porewater sampler, we demonstrate mm-scale element profiles mapping across the SWI in paddy soils. High-concentrations of iron and manganese (> 10 mg/L) were measured by ICP-MS in an extended dynamic range mode to avoid signal overflow. The iron profile along the SWI generated by the ICP-MS method showed no significant difference (p < 0.05) compared to that measured independently using a colorimetric method. Furthermore, four arsenic (arsenite, arsenate, monomethylarsonic and dimethylarsinic acid), two phosphorus (phosphite and phosphate) and two sulfur (sulfide and sulfate) species were separated in 10 min by ion chromatography -ICP-MS with the NH4HCO3 mobile phase. We verified the technique using paddy soils collected from the field, and present the mm-scale profiles of iron, manganese, and arsenic, phosphorus, sulfur species (relative standard deviation < 8%). The technique developed in this study will significantly promote the measurement throughput in limited samples (e.g. 100 μL) collected by HR samplers, which would greatly facilitate redox-sensitive elements biogeochemical cycling in saturated soils. 相似文献
83.
Xiaofang Yang Zhongbo Zhou Maddela Naga Raju Xiaoxuan Cai Fangang Meng 《环境科学学报(英文版)》2017,29(7):150-161
Effluent organic matter (EfOM) from municipal wastewater treatment plants potentially has a detrimental effect on both aquatic organisms and humans. This study evaluated the removal and transformation of chromophoric dissolved organic matter (CDOM) and fluorescent dissolved organic matter (FDOM) in a full-scale wastewater treatment plant under different seasons. The results showed that bio-treatment was found to be more efficient in removing bulk DOM (in terms of dissolved organic carbon, DOC) than CDOM and FDOM, which was contrary to the disinfection process. CDOM and FDOM were selectively removed at various stages during the treatment. Typically, the low molecular weight (MW) fractions of CDOM and protein-like FDOM were more efficiently removed during bio-treatment process, whereas the humic-like FDOM exhibited comparable decreases in both bio-treatment and disinfection processes. Overall, the performance of the WWTP was weak in terms of CDOM and FDOM removal, resulting in enrichment of CDOM and FDOM in effluent. Moreover, the total removal of the bulk DOM (P < 0.05) and the protein-like FDOM (P < 0.05) displayed a significant seasonal variation, with higher removal efficiencies in summer, whereas removal of CDOM and the humic-like FDOM showed little differences between summer and winter. In all, the results provide useful information for understanding the fate and transformation of DOM, illustrating that sub-fractions of DOM could be selectively removed depending on treatment processes and seasonality. 相似文献
84.
Ningombam Linthoingambi Devi Ishwar Chandra Yadav Q. I. Shihua Surendra Singh S. L. Belagali 《Environmental monitoring and assessment》2011,177(1-4):23-33
Pulp and paper mills generate varieties of pollutants depending upon type of the pulping process being used. This paper presents the characteristics of wastewater from South India Paper Mill, Karnataka, India which is using recycled waste paper as a raw material. The raw wastewater consists of 80?C90 mg L???1 suspended solid and 1,010?C1,015 mg L???1 dissolved solid. However, pH varied from 5.5?C6.8. The biochemical oxygen demand and chemical oxygen demand ranged from 200?C210 and 1,120?C1,160 mg L???1, respectively. Aerobic treatment of raw effluent attribute to significant reduction in suspended solid (range between 25 to 30 mg L???1) and total dissolved solid (range between 360 to 390 mg L???1). However, pH, temperature, and electrical conductivity were found superior after treatment. Copper, cadmium, iron, lead, nickel, and zinc were found in less quantity in raw effluent and were almost completely removed after treatment. The dendrogram of the effluent quality parameters clearly indicate that South India Paper Mill does not meet Minimal National Standard set by central Pollution Control Board to discharge in agricultural field. 相似文献
85.
Rakesh Yadav Sadhana Dwivedi Sandeep Kumar Ashok Chaudhury 《Food and environmental virology》2010,2(2):53-63
Food and environmental virology has become a very important and interesting area of research because of food safety and public
health concerns. During the last few decades, increasing foodborne diseases and environmental generated illnesses are considered
to be highly challenging issues. Biosensor technology holds great promise for the healthcare market, and the security sector.
Similar to clinical diagnostic tools, biosensors are being developed for the rapid, reliable, yet inexpensive identification
and enumeration of pathogenic viruses which are adulterating environment, food and feed commodities. In this modern era, bio-and
nano-technologies play a pivotal role in virological diagnostics of food industry, environmental and veterinary samples. This
review covers the recent advances and future prospects of nanotechnology-based bioanalytical microsystems for food and environmental
virology. 相似文献
86.
Ashutosh Bahugun Madhuri K. Lily Ashok Munjal Ravindra N. Singh Koushalya Dangwal 《环境科学学报(英文版)》2011,23(6):975-982
A new bacterial strain DMT-7 capable of selectively desulfurizing dibenzothiophene (DBT) was isolated from diesel contaminated
soil. The DMT-7 was characterized and identified as Lysinibacillus sphaericus DMT-7 (NCBI GenBank Accession No. GQ496620)
using 16S rDNA gene sequence analysis. The desulfurized product of DBT, 2-hydroxybiphenyl (2HBP), was identified and
confirmed by high performance liquid chromatography analysis and gas chromatography-mass spectroscopy analysis respectively.
The desulfurization kinetics revealed that DMT-7 started desulfurization of DBT into 2HBP after the lag phase of 24 hr, exponentially
increasing the accumulation of 2HBP up to 15 days leading to approximately 60% desulfurization of the DBT. However, further growth
resulted into DBT degradation. The induced culture of DMT-7 showed shorter lag phase of 6 hr and early onset of stationary phase
within 10 days for desulfurization as compared to that of non-induced culture clearly indicating the inducibility of the desulfurization
pathway of DMT-7. In addition, Lysinibacillus sphaericus DMT-7 also possess the ability to utilize broad range of substrates as sole
source of sulfur such as benzothiophene, 3,4-benzo DBT, 4,6-dimethyl DBT, and 4,6-dibutyl DBT. Therefore, Lysinibacillus sphaericus
DMT-7 could serve as model system for efficient biodesulfurization of diesel and petrol. 相似文献
87.
Prabagar Jijoe Samuel Yashas Shivamurthy Ravindra Gurupadayya Bannimath Wantala Kitirote Diganta Das Bhusan Shivaraju Harikaranahalli Puttaiah 《Environmental science and pollution research international》2022,29(38):57204-57214
Environmental Science and Pollution Research - In this study, lanthanum copper oxide was synthesized under hydrothermal techniques and characterized for doxycycline degradation. The catalyst... 相似文献
88.
A. Kishore Kumar P. Kranthi Raju Ch. Pradeep Kumar A. Rama Narsimha Reddy 《毒物与环境化学》2013,95(2):359-366
Occupational exposure is unregulated in developing countries like India, and becoming the most common cause of disease of environmental origin. The present study was aimed to investigate the effects of occupational exposure on plasma lipid profiles, and risk of cardiovascular diseases. A total of 79 human volunteers were included in the study. Control subjects were healthy housewives of Karimnagar, India. Occupationally exposed individuals included different occupational workers like petrol station attendants, battery chargers, drivers, welders, pesticide-exposed workers, painters, and auto mechanics. These subjects were shown to be chronic occupationally-exposed for at least three years, and neither associated with any other chronic pathological conditions like hypertension or diabetes, nor under any medication other than analgesics during the month preceding the study. Subjects with excessive high or low caloric intake were excluded from the study. Total cholesterol (TC), LDL cholesterol, triglycerides (TG), VLDL cholesterol, LDL/HDL cholesterol, and TC/HDL ratio in these subjects were significantly higher than those in control subjects, whereas HDL cholesterol was not markedly affected. Blood pressure (systolic and diastolic), and other anthropometric parameters (body mass index (BMI), body fat index (BFI), body surface area (BSA)) were not significantly different between groups. Data suggest that chronic occupational exposure increases plasma lipid levels and is thereby associated with cardiovascular complications. 相似文献
89.
Satish Kumar Nandigama Reddy Marri Sameer Bheeram Vema Reddy Mukkamala Saratchandra Babu Raju Chowhan L. Chandrasekhara Rao L. 《Environmental Chemistry Letters》2019,17(1):455-464
Environmental Chemistry Letters - Developing environmentally benign synthetic protocols such as reaction in water is a major challenge. However, many of the known methods carried out in an... 相似文献
90.
Mudhoo Ackmez Gautam Ravindra Kumar Ncibi Mohamed Chaker Zhao Feiping Garg Vinod Kumar Sillanpää Mika 《Environmental Chemistry Letters》2019,17(1):157-193
Environmental Chemistry Letters - The release of recalcitrant dyes into the biosphere is a threat because of pollution and environmental health issues. Adsorption using commercial activated carbon... 相似文献