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51.
Levels,profile and distribution of Dechloran Plus (DP) and Polybrominated Diphenyl Ethers (PBDEs) in the environment of Pakistan 总被引:1,自引:0,他引:1
Jabir Hussain Syed Riffat Naseem Malik Jun Li Yan Wang Yue Xu Gan Zhang Kevin C. Jones 《Chemosphere》2013
No scientific data is available on emerging contaminants including Polybrominated Diphenyl Ethers (PBDEs) and Dechloran Plus (DP) levels in the environment in Pakistan. Levels of PBDEs and DP were determined in the soil, sediment and atmospheric samples along the stretch of River Ravi in Punjab Province. Average concentrations of ΣPBDEs in atmosphere, soils and sediments were 36 pg m−3, 40 ng g−1 and 640 ng g−1. BDE-209 was the most abundant PBDE congener, showing that deca-BDE accounts for most of the total PBDE emitted in the environment of Pakistan. Total DP levels were calculated as 88 pg m−3, 0.8 ng g−1 and 1.9 ng g−1 in air, soil and sediment samples, respectively. The lower average fractions of anti-DP showed significant differences to those of the technical mixtures, indicating the lack of DP production source in Pakistan. 相似文献
52.
Masum A. Patwary William Thomas O’Hare Graham Street K. Maudood Elahi Syed Shahadat Hossain Mosharraf H. Sarker 《Waste management (New York, N.Y.)》2009,29(8):2392-2397
There is a concern that mismanagement of medical waste in developing countries may be a significant risk factor for disease transmission. Quantitative estimation of medical waste generation is needed to estimate the potential risk and as a basis for any waste management plan. Dhaka City, the capital of Bangladesh, is an example of a major city in a developing country where there has been no rigorous estimation of medical waste generation based upon a thorough scientific study. These estimates were obtained by stringent weighing of waste in a carefully chosen, representative, sample of HCEs, including non-residential diagnostic centres. This study used a statistically designed sampling of waste generation in a broad range of Health Care Establishments (HCEs) to indicate that the amount of waste produced in Dhaka can be estimated to be 37 ± 5 ton per day. The proportion of this waste that would be classified as hazardous waste by World Health Organisation (WHO) guidelines was found to be approximately 21%. The amount of waste, and the proportion of hazardous waste, was found to vary significantly with the size and type of HCE. 相似文献
53.
Muhammad Aqeel Kamran Amna Rabia Mufti Nadia Mubariz Jabir Hussain Syed Asghari Bano Muhammad Tariq Javed Muhammad Farooq Hussain Munis Zhiyuan Tan Hassan Javed Chaudhary 《Environmental science and pollution research international》2014,21(2):801-812
Soil and water quality is greatly affected by environmental pollution due to the increasing trend of urbanization and industrialization. In many developing countries, including Pakistan, the situation is more alarming as no preventive measures are still taken to tackle the problem. Although in developed countries, many techniques are used to remediate the environment including phytoremediation. It is the most eco-friendly technique in which plants are used to remove pollutants from the environment. Pakistan has also a great diversity of plants which could be used for the remediation of environmental pollutants. To our knowledge, few studies from Pakistan were reported about the use of flora for phytoremediation. According to recent literature, 50 plant species from Pakistan are studied for remediation purposes. In this review, the potential of different plant species for phytoremediation from Pakistan has been discussed along with their comparison to other countries to relate future perspectives. 相似文献
54.
Brassinosteroids protect photosynthetic machinery against the cadmium induced oxidative stress in two tomato cultivars 总被引:2,自引:0,他引:2
The present study was conducted with an aim to gain better insight of brassinosteroid generated response on the effects of cadmium on photosynthetic machinery and active oxygen metabolism in two tomato cultivars (K-25 and Sarvodya). These tomato cultivars were subjected to graded cadmium levels in soil (0, 3, 6, 9 or 12 mg kg−1 soil) with their foliage being sprayed with 0 or 10−8 M of 28-homobrassinolide/24-epibrassinolide (HBL/EBL) at 59 d stage. The results suggested that photosynthetic parameters, leaf water potential and activity of several enzymes (nitrate reductase and carbonic anhydrase) decreased significantly in both the cultivars, to a lesser extent in K-25 than Sarvodya with the increasing levels of cadmium in the soil. However, the activity of antioxidant enzymes and proline content increased in response to metal treatment as well as the application of brassinosteroids (HBL/EBL). Overall, exogenous application of brassinosteroids improved the activity of photosynthetic machinery and that of antioxidant defense system in both the cultivars, and also nullified the damaging effect of metal on these parameters. 相似文献
55.
Tannery waste is categorized as toxic and hazardous in Malaysia due to its high content of Cr (in excess of 500 mg/kg) and other heavy metals. Heavy metals, when in high enough concentrations, have the potential to be both phytotoxic and zootoxic. Heavy metals are found as contaminants in tannery sludge. This investigation aimed to identify the fate of chromium, cadmium, copper, lead, and zinc concentrations in tannery sludge throughout a 50-day composting cycle. The results of this study showed a general increase in the removal of Cr, Cd, Pb, and to a much smaller extent Zn and Cu, manifested by a decrease in their overall concentrations within the solid fraction of the final product (the decreases were likely the result of leaching). Furthermore, in using a sequential extraction method for sludge composting at different phases of treatment, a large proportion of the heavy metals were found to be associated to the residual fraction (70-80%) and fractions more resistant to extraction, X-NaOH, X-EDTA, X-HNO3 (12-29%). Less than 2% of the metals were bound to bioavailable fractions X-(KNO3+H2O). 相似文献
56.
Che Azmi Nor Azizah Mohd Apandi Nazirah A. Rashid Ahmad Safuan 《Environmental science and pollution research international》2021,28(14):16948-16961
Environmental Science and Pollution Research - Peat fires in tropical peatland release a substantial amount of carbon into the environment and cause significant harm to peatlands and the ecology,... 相似文献
57.
Tabish Mohammad Khatoon Aisha Alkahtani Saad Alkahtane Abdullah Alghamdi Jawahir Ahmed Syed Anees Mir Snober S Albasher Gadah Almeer Rafa Al-Sultan Nouf K. Aljarba Nada H. Al-Qahtani Wedad Saeed AL-Zharani Mohammed Nayak Amit Kumar Hasnain Md Saquib 《Environmental science and pollution research international》2021,28(30):40311-40321
Environmental Science and Pollution Research - The World Health Organization (WHO) recognized a novel coronavirus as the causative agent of a new form of pneumonia. It was subsequently named... 相似文献
58.
Jiang Yushi Khaskheli Asadullah Raza Syed Ali Qureshi Muhammad Asif Ahmed Maiyra 《Environmental science and pollution research international》2021,28(11):13323-13339
Environmental Science and Pollution Research - The study intends to explore the following objectives: initially, to examine the non-linear connection between globalization, renewable energy... 相似文献
59.
Anser Muhammad Khalid Syed Qasim Raza Apergis Nicholas 《Environmental science and pollution research international》2021,28(35):48011-48021
Environmental Science and Pollution Research - High levels of CO2 emissions are extensively cited as one of the main global concerns nowadays. Therefore, researchers have been investigating the... 相似文献
60.
Younis Ijaz Longsheng Cheng Zulfiqar Muhammad Imran Imran Muhammad Shah Syed Ahsan Ali Hussain Mudassar Solangi Yasir Ahmed 《Environmental science and pollution research international》2021,28(30):40355-40370
Environmental Science and Pollution Research - The COVID-19 pandemic needs immediate solution before inflicting more devastation. So far, China has successfully controlled transmission of COVID-19... 相似文献