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101.
Eqani SA Malik RN Katsoyiannis A Zhang G Chakraborty P Mohammad A Jones KC 《Journal of environmental monitoring : JEM》2012,14(6):1645-1654
Concentrations in surface waters (including particulate phase) of the River Chenab ranged from 27-1100 ng L(-1) and 25-1200 ng L(-1) for OCPs and 7.7-110 ng L(-1) and 13-99 ng L(-1) for PCBs during summer and winter, respectively from 2007-2009. DDTs exhibited the highest concentration, followed by HCHs > chlordane > ∑(24)PCBs > ∑other OCPs. Different indicative ratios for organochlorines suggest that current use, long range transport and also past application of these chemicals contribute to the total burden. Statistical analysis highlighted agricultural and industrial activities and municipal waste disposal as main sources of OCPs and PCBs in the riverine ecosystem of the River Chenab. Risk Quotients (RQ(CCCs)) > 10 for DDTs and PCBs levels in collected water samples from the River Chenab suggest that risk from DDTs and PCBs is moderate to severe and fluxes calculated for OCPs and PCBs from the River Chenab to the Indus River were 7.5 tons per year and 1.0 tons per year, respectively. 相似文献
102.
Mushtaq Ahmed Zafer Ullah Wazir Rahmat Ali Khan Mohammed Imran Khan Syed Waqas Asif Iqbal 《毒物与环境化学》2013,95(9):1539-1545
Medicinal plants play a crucial role in maintaining human health. Kalanchoe pinnata has been used for treatment of different ailments like infections, rheumatism, and inflammation. Data showed that Kalancho pinnata methanolic extract (100 or 1000 μg/ml) significantly inhibited growth of shoots (hypocotyls) and roots (radicals) of rice compared to control after 3 or 7 days treatment. Further, the Kalancho pinnata methanolic extract (50–1000 μg/ml) exhibited antioxidant properties and scavenged free radicals in dose-dependent manner compared with a standard antioxidant (ascorbic acid). Kalancho pinnata methanolic extract also possesses antifungal property that inhibited approximately 76% and 51% growth of Aspergillus flavous and Aspergillus niger, respectively, using the extract at 200 μg/ml. 相似文献
103.
Buledi Jamil Ahmed Amin Sidra Haider Syed Iqleem Bhanger Muhammad Iqbal Solangi Amber R. 《Environmental science and pollution research international》2021,28(42):58994-59002
Environmental Science and Pollution Research - The extensive release of heavy metals into the natural water bodies has become globally prevalent from past few decades. Heavy metal toxicity is... 相似文献
104.
Ashraf Sohaib Ashraf Shoaib Ashraf Moneeb Imran Muhammad Ahmad Choudhary Zawar Ahmad Hafsa Hadiqa Tul Awais Abeer Bin Kalsoom Larab Farooq Iqra Habib Zaighum Ashraf Sidra Iqbal Qurrat Ul Ain Ghufran Muhammad Sherazi Syed Sami Hussain Akram Muhammad Kiwan Akmal Rutaba Rafique Sundas Nawaz Khawar Safdar Zartasha Siddique Uzma Nasim Hassan Muhammad Arshad Shahroze Virk Abdul Rehman Ashraf Muhammad Saboor Qazi Abdul Humayun Ayesha Izhar Mateen 《Environmental science and pollution research international》2022,29(6):8382-8392
105.
A.J. Khan Kamal Swami Tanveer Ahmed A. Bari Akhtar Shareef Liaquat Husain 《Atmospheric environment (Oxford, England : 1994)》2009,43(38):5989-5995
An improved chemical oxidation pretreatment method has been developed for the determination of elemental carbon (EC) [also known as black carbon (BC) or soot] in lake sediments, using a thermal–optical transmittance (TOT) carbon analyzer. The method employs six steps: (1) removal of carbonates by treatment with HCl; (2) removal of silicates by treatment with HF + HCl; (3) removal of any remaining carbonates by treatment with HCl; (4) removal of humic acids by treatment with NaOH; and (5) oxidation of kerogens by K2Cr2O7 + H2SO4. A critical step of zinc chloride treatment was added; this apparently changes EC's morphology and enhances retention on quartz fiber filter, resulting in several-fold increased chemical yield. EC was determined using the TOT method with modified combustion timings. Carbon black (acetylene) and four NIST standard reference materials (SRMs) were used for quality control, and to assess the precision of the analysis. The EC recoveries from 18 carbon black samples varied from 90 to 111%, with a mean value of 99 ± 6%. The high EC recoveries confirmed the validity of the method. Char reference materials (i.e. chestnut wood and grass char) were used to determine potential contribution to EC in our measurements. The char references containing about 700 mg total organic carbon (OC) contributed ~1.5% EC. The measured EC values from four NIST standards were 17.0 ± 0.6, 24.2 ± 3.2, 5.6, and 1.9 ± 0.1 mg gdw?1 for SRM-1648, SRM-1649a, SRM-1941b and SRM-8704, respectively. These values in SRMs were in agreement (<±4%) with the previously reported values. The method was applied to determine the EC in sediment cores from an urban lake and a remote mountain lake in the Northeastern United States. The EC concentrations in two lakes mimic the model EC emissions from the industrial revolution in United States. 相似文献
106.
Baloch Qadar Bakhsh Maher Sourath Shah Syed Naseeb Sheeraz Muhammad Iqbal Nadeem Raza Hassan 《Environmental science and pollution research international》2022,29(55):83099-83111
Environmental Science and Pollution Research - The devastating effects of the COVID-19 pandemic have left many repercussions for the tourism industry to preempt any future catastrophe of this... 相似文献
107.
Meirun Tang Mihardjo Leonardus WW Haseeb Muhammad Khan Syed Abdul Rehman Jermsittiparsert Kittisak 《Environmental science and pollution research international》2021,28(4):4184-4194
Environmental Science and Pollution Research - For an economy to excel in growth, there is usually a trade-off between financial development and environment deterioration. For a country like... 相似文献
108.
Saeed Tanveer Miah Md Jihad Khan Tanbir 《Environmental science and pollution research international》2021,28(24):30908-30928
Environmental Science and Pollution Research - This study reports organics and nutrient removal performances of the intensified constructed wetlands, i.e., tidal flow-based microbial fuel cell... 相似文献
109.
Seetharaman Prabukumar Gnanasekar Sathishkumar Chandrasekaran Rajkuberan Chandrakasan Gobinath Syed Asad Hodhod Mohamed S. Ameen Fuad Sivaperumal Sivaramakrishnan 《Environmental science and pollution research international》2017,24(26):21272-21282
Environmental Science and Pollution Research - Upon screening for novel and potential biocompounds with larvicidal activities, we successfully isolated hamisonine (HMSN) a limonoid compound from... 相似文献
110.
Fattah Md. Abdul Rimi Reshma Afroz Morshed Syed Riad 《Journal of Material Cycles and Waste Management》2022,24(4):1551-1564
Journal of Material Cycles and Waste Management - Excessive waste generation and ineffective waste management systems in developing cities have become a major challenge in achieving urban... 相似文献