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71.
Taghavizadeh Yazdi Mohammad Ehsan Amiri Mohammad Sadegh Nourbakhsh Fahimeh Rahnama Mostafa Forouzanfar Fatemeh Mousavi Seyed Hadi 《Environmental science and pollution research international》2021,28(21):26359-26379
Environmental Science and Pollution Research - Heat shock proteins (HSPs) are a family of proteins that are expressed by cells in reply to stressors. The changes in concentration of HSPs could be... 相似文献
72.
A two-step process for the removal of dinitrotoluene from water is presented: zero-valent iron reduction is coupled with peroxidase-catalyzed polymerization of the resulting diaminotoluenes (DAT). The effect of pH was examined in the reduction step: at pH 6 the reaction occurred much more rapidly than at pH 8. In the second step, optimal pH and substrate ratio, minimal enzyme concentration and effect of polyethylene glycol (PEG) as an additive for greater than 95% conversion of DAT, over a 3h reaction period were determined using high performance liquid chromatography. Two enzymes were investigated and compared: Arthromyces ramosus peroxidase (ARP) and soybean peroxidase (SBP). The optimal pH values were 5.4 and 5.2 for ARP and SBP, respectively, but SBP was more resistant to mild acid whereas ARP was more stable in neutral solutions. SBP was found to have a greater hydrogen peroxide demand (optimal peroxide/DAT molar ratio for SBP: 2.0 and 3.0 for 2,4-diaminotoluene (2,4-DAT) and 2,6-diaminotoluene (2,6-DAT), respectively; for ARP: 1.5 and 2.75 for 2,4-DAT and 2,6-DAT, respectively) but required significantly less enzyme (0.01 and 0.1 U ml(-1) for 2,4-DAT and 2,6-DAT, respectively) to convert the DAT than ARP (0.4 and 1.5 U ml(-1) for 2,4-DAT and 2,6-DAT, respectively). PEG was shown to have no effect upon the degree of substrate conversion for either enzyme. 相似文献
73.
Flow injection spectrophotometric determination of methamidophos using online hydrolysis 总被引:1,自引:0,他引:1
Mohammad Rasul Jan Jasmin Shah Nadia Bashir M. Salman 《Environmental monitoring and assessment》2010,167(1-4):685-689
A new protocol for the online spectrophotometric determination of methamidophos has been developed. The method is based on online hydrolysis of methamidophos, and the resulting hydrolyzed product is reacted with sodium nitroproside to form a colored complex. The calibration curve is linear over the concentration range of 0.5–20 μgml?–?1, with a molar absorptivity of 2.5×104 L mol?1 cm?1. The method is fast and reproducible with a sample throughput of 90 samples/h. The method is successfully applied to formulations and real samples. 相似文献
74.
Nazan Karsavuran Mohammad Charehsaz Hayati Celik Bayram Murat Asma Cengiz Yakıncı 《毒物与环境化学》2013,95(10):1564-1570
Hydrogen cyanide (HCN) poisoning due to amygdalin (AMY) in apricot seeds is one of the public health issues in Turkey. The aim of this study was to investigate the AMY content of 13 different apricot seeds including bitter and sweet ones, and which are either sulfurized or roasted. The AMY content was determined by a high-performance liquid chromatography. Release of HCN was predicted and total amount of seeds which can cause poisoning was calculated. The mean AMY content of bitter seeds was 26 ± 14 mg g?1 and that of sweet seeds was 0.16 ± 0.09 mg g?1. The consumption of small amounts of bitter seeds may cause cyanide poisoning. 相似文献
75.
Mokarram Marzieh Pourghasemi Hamid Reza Mokarram Mohammad Jafar 《Environmental science and pollution research international》2022,29(29):43891-43912
Environmental Science and Pollution Research - Wind energy is considered one of the most efficient and cost-effective ways to generate electricity, since it has a low environmental impact. So, it... 相似文献
76.
Samari Mohammad Ridha Firas Manovic Vasilije Macchi Arturo Anthony E. J. 《Mitigation and Adaptation Strategies for Global Change》2020,25(1):25-41
Mitigation and Adaptation Strategies for Global Change - Direct air capture (DAC) is a developing technology for removing carbon dioxide (CO2) from the atmosphere or from low-CO2-containing... 相似文献
77.
Salehi Tahereh Shirvani Mehran Dinari Mohammad Gavili Edris 《Journal of Polymers and the Environment》2022,30(10):4463-4478
Journal of Polymers and the Environment - Adsorptive removal of toxic metals from water using materials with high removal capability and sufficient environmental degradability is of great... 相似文献
78.
Ghalandari Mona Amirkhan Mohammad Amoozad-Khalili Hossein 《Environmental science and pollution research international》2023,30(1):451-476
Environmental Science and Pollution Research - Considering supply chain efficiency during the network design process significantly affect chain performance improvement. In this paper, the design... 相似文献
79.
Jamialahmadi Nafise Hashemi Mohammad Jalili Ghazizade Mahdi 《Journal of Material Cycles and Waste Management》2022,24(5):2054-2067
Journal of Material Cycles and Waste Management - With over 9 million population, challenges of waste management system (WMS) of Tehran can offer some lessons to other middle-income cities. Despite... 相似文献
80.
Xiaoguang Liu Mohammad M.I. Chowdhury Masuduz Zaman Mingu Kim George Nakhla 《环境科学学报(英文版)》2019,31(8):169-178
This study investigated the acute nickel toxicity on nitrification of low ammonia synthetic wastewater at 10, 23, and 35°C. The nickel inhibition half-velocity constants(K_(I,Ni)) for ammonia oxidizing bacteria(AOB) and nitrite oxidizing bacteria(NOB) based on Ni/MLSS ratio at 10, 23, and 35°C were 5.4 and 5.6 mg Ni/g MLSS, 4.6 and 3.5 mg Ni/g MLSS, and 9.1 and 2.7 mg Ni/g MLSS, respectively. In addition, chronic toxicity of nickel to nitrification of low ammonia synthetic wastewater was investigated at 10°C in two sequencing batch reactors(SBRs). Long-term SBRs operation and short-term batch tests were comparable with respect to the extent of inhibition and corresponding Ni/MLSS ratio. The μ_(max), b, and K_o of AOB were 0.16 day~(-1), 0.098 day~(-1) and 2.08 mg O_2/L after long-term acclimatization to nickel of 1 mg/L at 10°C, high dissolved oxygen(DO)(7 mg/L) and long solids retention time(SRT) of 63–70 days. Acute nickel toxicity of nitrifying bacteria was completely reversible. 相似文献