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171.
Zeeshan Jave Cheng Liu Muhammad Fahim Khokhar Chengzhi Xing Wei Tan Muhammad Ahmed Subhani Abdul Rehman Aimon Tanvir 《环境科学学报(英文版)》2019,31(6):296-305
This study presents the Multi Axis Differential Optical Absorption Spectroscopy(MAXDOAS) measurements for Glyoxal(CHOCHO) in Beijing, China(39.95°N, 116.32°E). CHOCHO is the smallest compound of di-carbonyl group. As a primary sink of CHOCHO, its photolysis with NOx(oxides of nitrogen) results in the production of tropospheric ozone. Therefore,the focus of CHOCHO DOAS measurements is increasing in trend. We did the measurements from 09 May 2017 to 09 September 2017. The study was conducted to compare different retrieval settings in order to reveal best DOAS fit settings for CHOCHO;furthermore, effect of haze and non-haze days on CHOCHO concentration was examined.The root mean square of residual and Differential Slant Column density(dSCD) error was reduced when measurements were done with lower wavelength limit around 432–438 nm and upper intervals around 455–460 nm. Thus, lower wavelength intervals around432–438 nm and upper intervals around 457–460 nm were best for the retrieval of dSCDs for CHOCHO. Meteorological conditions like haze or non-haze days did not have significant effect on DOAS fit parameters. The CHOCHO vertical column densities range from 1.33 E +14 to 9.77 E + 14 molecules/cm2 during the study period with average of 6.16 E +14 molecules/cm2. The results indicated that during haze days CHOCHO concentration was higher because of lower rate of photolysis and atmospheric oxidation potential. Our results did not show any significant weekend effect on CHOCHO atmospheric concentration. 相似文献
172.
Fouad I. Kanbour Abdul Messih N. Kitto Shetha Yassein Faiza A. Al-Taie Asma Ali 《Environment international》1985,11(5):459-463
Samples of atmospheric particulate matter obtained from representative areas of the city of Baghdad were collected on glass fiber filters using a high-volume sampler. Atomic absorption techniques were used to analyze the total suspended particulates (TSP) for the following trace metals; Fe, Cu, Zn, Pb, Mn, Cr, Cd, Co, and Hg. Sulfates were measured by turbidemetric method. Ion-selective electrodes was used for chloride analysis. It is concluded that the major components of TSP in the ambient air of Baghdad consist of mineral dust. Pb and Cd gave high enrichment factor values, which implies enrichment of these two metals from anthropogenic sources. High enrichment factors were also obtained for Zn and Cu. It is also concluded that in this arid area, the black smoke reflectance method is not suitable for measuring total suspended matter gravimetrically. 相似文献
173.
Al-khadher Sadeq Abdullah Abdo Abdul Kadir Aeslina Al-Gheethi Adel Ali Saeed Azhari Nur Wahidah 《Environmental science and pollution research international》2021,28(46):65513-65524
Environmental Science and Pollution Research - The current work aimed to study the physical, chemical and biological properties of food wastes generated from small and medium industries by using... 相似文献
174.
Hussain Sajjad Ouyang Ping Zhu Yingkun Khalique Abdul He Changliang Liang Xiaoxia Shu Gang Yin Lizi 《Environmental science and pollution research international》2021,28(26):34154-34166
Environmental Science and Pollution Research - Unsuccessful vaccination against Salmonella due to a large number of serovars, and antibiotic resistance, necessitates the development of novel... 相似文献
175.
Mehmood Ahsan Khan Fahad Saleem Ahmed Mubarak Nabisab Mujawar Mazari Shaukat Ali Jatoi Abdul Sattar Khalid Mohammad Tan Yie Hua Karri Rama Rao Walvekar Rashmi Abdullah Ezzat Chan Nizamuddin Sabzoi 《Environmental science and pollution research international》2021,28(39):54477-54496
Environmental Science and Pollution Research - Oil spills are a major contributor to water contamination, which sets off a significant impact on the environment, biodiversity, and economy.... 相似文献
176.
Ivan Jarić Céline Bellard Ricardo A. Correia Franck Courchamp Karel Douda Franz Essl Jonathan M. Jeschke Gregor Kalinkat Lukáš Kalous Robert J. Lennox Ana Novoa Raphaël Proulx Petr Pyšek Andrea Soriano–Redondo Allan T. Souza Reut Vardi Diogo Veríssimo Uri Roll 《Conservation biology》2021,35(2):447-451
177.
Majeed Muhammad Tariq Yu Zhiyuan Maqbool Adnan Genie Mesfin G. Ullah Sana Ahmad Waheed 《Environmental science and pollution research international》2021,28(31):41922-41922
Environmental Science and Pollution Research - A Correction to this paper has been published: https://doi.org/10.1007/s11356-021-13968-6 相似文献
178.
Environmental Chemistry Letters - Water scarcity is becoming a major issue worldwide due to water pollution and population growth, calling for advanced techniques for water reclamation. For... 相似文献
179.
Habib-ur-Rehman Mirza Abdul Rehman Usman Ali Naeem Hashim Nisar Hashmi Abdul Sattar Shakir 《Environmental monitoring and assessment》2018,190(1):39
The pivot point of delta in Tarbela dam has reached at about 10.6 km from the dam face which may result in blocking of tunnels. Tarbela delta was modeled from 1979 to 2060 using hec-6 model. Initially, the model was calibrated for year 1999 and validated for years 2000, 2001, 2002, and 2006 by involving the data of sediment concentration, reservoir cross sections (73 range lines), elevation-area capacity curves, and inflows and outflows from the reservoir. Then, the model was used to generate future scenarios, i.e., run-1, run-2, and run-3 with pool levels; 428, 442, and 457 m, respectively, till 2060. Results of run-1 and run-2 showed advancement to choke the tunnels by 2010 and 2030, respectively. Finally, in run-3, the advancement was further delayed showing that tunnels 1 and 2 will be choked by year 2050 and pivot point will reach at 6.4 km from the dam face. 相似文献
180.
Su Teng Ahmad Ishtiaq Qayyum Abdul Yin Weihua Rahman Saeed ur Adeel-Farooq Rana Muhammed 《Environmental science and pollution research international》2021,28(47):66930-66940
Environmental Science and Pollution Research - Energy consumption is widely regarded as the primary driver of economic development and environmental degradation. The current study examines how... 相似文献