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31.
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
32.
Inoue MH Oliveira RS Regitano JB Tormena CA Constantin J Tornisielo VL 《Journal of environmental science and health. Part. B》2004,39(4):589-601
Sorption kinetics of atrazine and diuron was evaluated in soil samples from a typical landscape in Paraná. Samples were collected (0-20 cm) in a no-tillage area from Mamborê, PR, which has been cultivated under a crop rotation for the last six years. Six sampling points of the slope were selected to represent a wide range of soil chemical and physical properties found in this area. Radiolabeled tracers (14C-atrazine and 14C-diuron) were used and the radioactivity was detected by liquid scintillation counting (LSC). Sorption was accomplished for increasing equilibration periods (0.5, 1.5, 3, 6, 12, 24, and 48 h). Kinetics data fitted adequately well to Elovich equation, providing evidences that soil reaction occurs in two distinct stages: a fast, initial one followed by a slower one. During the fast phase, 34-42 and 71-79% of total atrazine and diuron applied were sorbed to soil samples. No important differences were found among combinations of soil and herbicide sorption during the slow phase. The unrealistic conditions under batch experiments should be overestimating sorption in the fast phase and underestimating diffusion in the slow phase. Sorption of both herbicides was positively correlated to organic carbon and clay contents of soils, but atrazine was much less sorbed than diuron, showing its higher potential to contaminate groundwater, specially in sandy, low organic carbon soils. 相似文献
33.
PM10 airborne particles and soot deposit collected after a fire incident at a chemical store were analyzed in order to determine the concentrations of polycyclic aromatic hydrocarbons(PAHs). The samples were extracted with 1 : 1 hexane-dichloromethane by ultrasonic agitation. The extracts were then subjected to gas chromatography-mass spectrometric(GC-MS) analysis. The total PAHs concentrations in airborne particles and soot deposit were found to be 3.27 1.55 ng/m^3 and 12.81 24.37 μg/g, respectively. Based on the molecular distributions of PAHs and the interpretation of their diagnostic ratios such as PHEN/(PHEN ANTH), FLT/(FLT PYR) and BeP/(BeP BaP), PAHs in both airborne particles and soot deposit may be inferred to be from the same source. The difference in the value of IP/(IP BgP) for these samples indicated that benzo[ g, h, i] perylene and coronene tend to be attached to finer particles and reside in the air for longer periods. Comparison between the molecular distributions of PAHs and their diagnostic ratios observed in the current study with those reported for urban atmospheric and roadside soil particles revealed that they are of different sources. 相似文献
34.
Afzal Jamil Yihong Zhou Qayum Maria Afzal Usama Aslam Muhammad 《Environmental science and pollution research international》2023,30(6):14592-14603
Environmental Science and Pollution Research - Dams are studied not only for potential advantages but also for possible environmental repercussions. The objective of this case study is to see the... 相似文献
35.
Jamil Barkat Yaping Shen Ud Din Nizam Nazneen Shama Mushtaq Anila 《Environmental science and pollution research international》2021,28(37):51278-51296
Environmental Science and Pollution Research - Environmental degradation is being studied by linking with various factors depending upon the interest of researchers. Our interest is in... 相似文献
36.
Al-Shidi Hilal K. Sulaiman Hameed Al-Reasi Hassan A. Jamil Farrukh Aslam Muhammad 《Environmental science and pollution research international》2021,28(26):33980-33993
Environmental Science and Pollution Research - Heavy metal contamination of Hg, As, Cu, Cr, Zn, and Pb was investigated in three different fractions 45, 125, and 200 μm of road dust... 相似文献
37.
Jamil M. Bakhashwain 《International Journal of Green Energy》2016,13(14):1467-1472
This article utilizes Support Vector Machines (SVM) for predicting global solar radiation (GSR) for Sharurha, a city in the southwest of Saudi Arabia. The SVM model was trained using measured air temperature and relative humidity. Measured data of 1812 values for the period from 1998–2002 were obtained. The measurement data of 1600 were used for training the SVM, and the remaining 212 were used for comparison between the measured and predicted values of GSR. The GSR values were predicted using the following four combinations of data sets: (i) Daily mean air temperature and day of the year as inputs, and global solar radiation as output; (ii) daily maximum air temperature and day of the year as inputs, and GSR as output; (iii) daily mean air temperature and relative humidity and day of the year as inputs, and GSR as output; and (iv) daily mean air temperature, day of the year, relative humidity, and previous day’s GSR as inputs, and GSR as output. The mean square error was found to be 0.0027, 0.0023, 0.0021, and 7.65 × 10?4 for case (i), (ii,), (iii), and (iv) respectively, while the corresponding absolute mean percentage errors were 5.64, 5.08, 4.48, and 2.8%. Obtained results show that the SVM method is capable of predicting GSR from measured values of temperature and relative humidity. 相似文献
38.
Sadaf Sadia Arain Tasneem Gul Kazi Hassan Imran Afridi Kapil Dev Brahman Naeemullah Sumaira Khan Abdul Haleem Panhwar Muhammad Afzal Kamboh Jamil R. Memon 《Environmental monitoring and assessment》2015,187(5):309
The present study was aimed to evaluate the cadmium (Cd) and lead (Pb) levels in the blood samples of adolescent boys, chewing different smokeless tobacco (SLT) products in Pakistan. For comparative purpose, boys of the same age group (12–15 years), not consumed any SLT products were selected as referents. To determine trace levels of Cd and Pb in blood samples, a preconcentration method, vortex-assisted liquid–liquid microextraction (VLLME) has been developed, prior to analysis by flame atomic absorption spectrometry. The hydrophobic chelates of Cd and Pb with ammonium pyrrolidinedithiocarbamate were extracted into the fine droplets of ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate, while nonionic surfactant, Triton X-114 was used as a dispersing medium. The main factors affecting the recoveries of Cd and Pb, such as concentration of APDC, centrifugation time, volume of IL and TX-114, were investigated in detail. It was also observed that adolescent boys who consumed different SLT products have 2- to 3-fold higher levels of Cd and Pb in their blood samples as compared to referent boys (p?<?0.001). 相似文献
39.
40.
Robinson L. Contiero Denis F. Biffe Jamil Constantin Rubem S. de Oliveira Jr. Felipe R. Lucio 《Journal of environmental science and health. Part. B》2016,51(12):888-893
The objective of this study was to evaluate the effects of nozzle types and 2,4-D formulations on spray deposition on different targets. Two field experiments were carried out in a completely randomized design, and treatments were arranged in a factorial scheme. Species in experiment 1 were Sumatran fleabane (Conyza sumatrensis) and Brazil pusley (Richardia brasiliensis) and in experiment 2 were soybeans (Glycine max) and Benghal dayflower (Commelina benghalensis). For both experiments, the first factor corresponded to spray nozzles with different settings (AD 110.015 – 61 and 105 L ha?1; AD 015-D – 75 and 146 L ha?1; XR 110.0202 – 200 L ha?1; and ADIA-D 110.02 – 208 L ha?1) and the second factor consisted of two formulations of 2,4-D (amine and choline). The formulation of 2,4-D choline has contained Colex-D? Technology. Similar or higher spray deposition was observed on the leaves and artificial targets when using 2,4-D choline as compared to the 2,4-D amine formulation, and these differences in deposition were more evident for nozzles applying lower spray volumes. Deposition was more affected by nozzle type when amine formulation was used, compared to choline formulation. 相似文献