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71.
72.
Abdulkareem Abdulraheem Seham Mustafa Nabeel Al-Saffar Muhammed Shahjahan 《Environmental monitoring and assessment》2012,184(12):7323-7328
This study was carried out to measure and compare the concentration of bacterial endotoxin in a variety of samples from drinking tap and bottled water available in Kuwait by using the Limulus Amoebocyte lysate test. A total of 29 samples were tested. Samples were collected from a variety of locations throughout the six governorates of Kuwait and 23 brands of local and imported bottled water samples were collected from the local market. The concentration of bacterial endotoxin was measured by using the standard Limulus Amoebocyte lysate test, gel clot method. This study showed that measured endotoxin concentrations in tap drinking water varied from 2.4 to 33.8?EU/ml with the average endotoxin concentration of 14.2?EU/ml. While the results of endotoxin concentrations in the bottled water were <0.03 to 20.1?EU/ml with an average of 1.96?EU/ml. The average concentration of endotoxin in bottled water is 13.5 % of the average concentration of endotoxin in tap drinking water. This experimental investigation has proved that drinking bottled water has less endotoxin as compared to tap water in Kuwait. It is also demonstrated that the endotoxin concentration did not exceed the acceptable level in drinking tap water. 相似文献
73.
The rate of heavy metal pollution in some minor fruit samples growing at roadsides in Turkey were determined by inductively
coupled plasma-atomic emission spectrometry (ICP-AES). The mineral contents of samples were found to be different depending
on the several parts Citrus fruits. The highest minor and heavy metal levels for Citrus fruits were determined between 17.24 and 45.30 mg/kg boron, 2.08 and 15.05 mg/kg copper, 1.01 and 16.00 mg/kg iron and 2.35
and 9.87 mg/kg zinc. Boron content ranged from 16.54 mg/kg (Deveci pear inner pulp) to 89.89 mg/kg (Arjantin apple outer skin).
The level of Fe ranged from 1.49 mg/kg (quince pulp) to 25.05 mg/kg (Ankara pear pulp). Cu content of fruits ranged between
2.52 mg/kg (Fuji apple skin) and 25.93 mg/kg quince skin). Zn content was found between 0.46 mg/kg (Golden apple pulp) and
14.34 mg/kg (quince skin). P contents ranged from 651 mg/kg (Golden apple pulp) to 1269 mg/kg (quince skin). Na was found
between 500 mg/kg (Fuji apple skin) and 907 mg/kg (Arjantin apple skin). 相似文献
74.
Alginate encapsulated nano-hydroxyapatite beads were synthesized and characterized by Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller surface analysis, and X-ray diffraction. Their adsorptive potential for Ni2+ and rhodamine B was explored in batch mode and by fixed-bed column passage. In the batch system, maximum uptake capacity for Ni2+ was 360 mg g?1 and 480 mg g?1 for rhodamine B. In the presence of humic acid, sorption was enhanced. For the continuous-flow system, adsorption was effective at low flow rate. For both pollutants, mass transport resistance increased during adsorption. The overall rates of rhodamine B and Ni2+ uptake were found to be controlled by external mass transfer. 相似文献
75.
Melik Kara Yetkin Dumanoğlu Hasan Altıok Tolga Elbir Mustafa Odabası Abdurrahman Bayram 《Environmental monitoring and assessment》2014,186(10):6017-6038
Topsoil samples (n?=?40) were collected from a heavily industrialized region in Turkey. The region includes several scrap processing iron–steel plants with electric arc furnaces (EAFs), a petroleum refinery, a petrochemical complex, steel rolling mills, a natural gas-fired power plant, ship-breaking yards and very dense transportation activities. The region has undergone a rapid transition from an agricultural region to a heavily industrialized region in the last three decades. Collected soil samples were analyzed for 48 trace elements using inductively coupled plasma-mass spectrometry (ICP-MS). The elemental distribution pattern in the region indicated that Nemrut area with dense iron–steel production activities was a hotspot for elemental pollution. In addition to crustal elements, concentrations of anthropogenic trace elements (i.e., Fe, Zn, Pb, Mn, Cu, Cd, Cr and Mo) were very high in the area influencing many parts of the region. Elemental compositions of fugitive sources polluting the soil (i.e., paved and unpaved roads, slag piles, EAFs filter dust piles and coal piles) were also determined. The methods (enrichment factors [EFs] and the index of geoaccumulation [I geo]) used for determination of pollution status of soil showed that Cr, Ag, Zn, As and Pb were the strongly contaminating elements for the region. Principal component analysis (PCA) clearly indicated that anthropogenic sources (steel production, refinery and petrochemical processes and traffic) were important sources in this region. 相似文献
76.
Determination of heavy metals in lower Sakarya river sediments using a BCR-sequential extraction procedure 总被引:1,自引:0,他引:1
Dundar MS Altundag H Eyupoglu V Keskin SC Tutunoglu C 《Environmental monitoring and assessment》2012,184(1):33-41
A BCR-sequential extraction procedure for the determination of extractable heavy metals was applied to sediments of various
rivers and lakes. There are many rivers basins in Turkey. Sakarya River Basin is one of the most important basins, which consists
of three parts: Upper, Middle and Lower Sakarya River Basins. In this study, the Lower Sakarya River was selected as the study
area for sediments. The samples were collected monthly from 10 pre-determined stations through the river for 10 months time
and analysed for the distribution of Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn elements. The determination of extractable heavy
metals in sediments was carried out by using Flame Atomic Absorption Spectrometer. The validation of the results was performed
by the analysis of a BCR 701 standard reference material. 相似文献
77.
Silva Neicí Cáceres Poetini Márcia Rósula Bianchini Matheus Chimelo Almeida Francielli Polet Dahle Mustafá Munir Mustafa Araujo Stífani Machado Bortolotto Vandreza Cardoso Musachio Elize Aparecida Santos Ramborger Bruna Piaia Novo Diogo La Rosa Roehrs Rafael Mesko Marcia Foster Prigol Marina Puntel Robson Luiz 《Environmental science and pollution research international》2021,28(14):17519-17531
Environmental Science and Pollution Research - Manganese (Mn) is an essential element that, in excess, seems to be involved in the development of different neurodegenerative conditions.... 相似文献
78.
Influence of pyrolysis temperature on production and nutrient properties of wastewater sludge biochar 总被引:12,自引:0,他引:12
Mustafa K. Hossain Vladimir Strezov K. Yin Chan Artur Ziolkowski Peter F. Nelson 《Journal of environmental management》2011
The important challenge for effective management of wastewater sludge materials in an environmentally and economically acceptable way can be addressed through pyrolytic conversion of the sludge to biochar and agricultural applications of the biochar. The aim of this work is to investigate the influence of pyrolysis temperature on production of wastewater sludge biochar and evaluate the properties required for agronomic applications. Wastewater sludge collected from an urban wastewater treatment plant was pyrolysed in a laboratory scale reactor. It was found that by increasing the pyrolysis temperature (over the range from 300 °C to 700 °C) the yield of biochar decreased. Biochar produced at low temperature was acidic whereas at high temperature it was alkaline in nature. The concentration of nitrogen was found to decrease while micronutrients increased with increasing temperature. Concentrations of trace metals present in wastewater sludge varied with temperature and were found to primarily enriched in the biochar. 相似文献
79.
A water surface sampler (WSS) was employed in combination with greased surface deposition plates (GSDPs) to measure the particulate dry deposition and gas exchange of polychlorinated biphenyls (PCBs) in Chicago, IL. Vapor phase PCB fluxes were calculated by subtracting the particulate fluxes obtained from GSDPs from total (particulate+gas) fluxes obtained from the WSS. Vapor phase PCB fluxes were divided by ambient air concentrations measured with a high volume sampler to calculate overall gas phase PCB mass transfer coefficients (K(G)). The calculated average PCB MTC was 0.54+/-0.47 cm s(-1). This experimentally determined average gas phase overall mass transfer coefficient, K(G), agreed well with the ones reported from studies using similar techniques and agreed well with modeled values obtained using MTC correlations developed for the WSS. 相似文献
80.
Romshoo Shakil Ahmad Murtaza Khalid Omar Shah Waheed Ramzan Tawseef Ameen Ummer Bhat Mustafa Hameed 《Environmental science and pollution research international》2022,29(35):52732-52751
Environmental Science and Pollution Research - The Himalayan glaciers provide water to a large population in south Asia for a variety of purposes and ecosystem services. As a result, regional... 相似文献