4篇
您的检索式：作者名="Anwei Chen"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of silver nanoparticles with different dosing regimens and exposure media on artificial ecosystem显示文摘Due to the wide use of silver nanoparticles(AgNPs) in various fields, it is crucial to explore the potential negative impacts on the aquatic environment of AgNPs entering into the environment in different ways. In this study, comparative experiments were conducted to investigate the toxicological impacts of polyvinylpyrrolidone-coated silver nanoparticles(PVP-AgNPs) with two kinds of dosing regimens, continuous and one-time pulsed dosing, in different exposure media(deionized water and XiangJiang River water). There were a number of quite different experimental results(including 100% mortality of zebrafish,decline in the activity of enzymes, and lowest number and length of adventitious roots) in the one-time pulsed dosing regimen at high PVP-AgNP concentration exposure(HOE)compared to the three other treatments. Meanwhile, we determined that the concentration of leached silver ions from PVP-AgNPs was too low to play a role in zebrafish death. Those results showed that HOE led to a range of dramatic ecosystem impacts which were more destructive than those of other treatments. Moreover, compared with the continuous dosing regimen, despite the fact that higher toxicity was observed for HOE, there was little difference in the removal of total silver from the aquatic environment for the different dosing regimens. No obvious differences in ecological impacts were observed between different water columns under low concentration exposure. Overall, this work highlighted the fact that the toxicity of Ag NPs was impacted by different dosing regimens in different exposure media, which may be helpful for assessments of ecological impacts on aquatic environments. | Jingwen Zeng Piao Xu Guiqiu Chen Guangming Zeng Anwei Chen Liang Hu Zhenzhen Huang Kai He Zhi Guo Weiwei Liu Jing Wu Jiangbo Shi | 2019 | Journal of Environmental Sciences2019，31，1： | 2 |
| 2 | Monitoring mycophenolie acid pharmacokinetic parameters in liver transplant recipients: prediction of occurrence of leukopenia 显示文摘 | Chen H Anwei M Bing C | 2008 | Liver Transpl2008，14，8： | 1 |
| 3 | Novel thiourea- modified magnetic ion-imprinted chitosardTiO2 composite for simul- taneous removal of cadmium and 2,4-dichlorophenol 显示文摘 | Chen Anwei Zeng Guangming Chen Guiqiu | 2012 | Chemical Engineering Journal2012，191，15： | 1 |
| 4 | Cysteine-enhanced reductive degradation of nitrobenzene using nano-sized zero-valent iron by accelerated electron transfer显示文摘As an aliphatic amino acid,cysteine(CYS)is diffuse in the living cells of plants and animals.However,little is known of its role in the reactivity of nano-sized zero-valent iron(NZVI)in the degradation of pollutants.This study shows that the introduction of CYS to the NZVI system can help improve the efficiency of reduction,with 30%more efficient degradation and a reaction rate constant nine times higher when nitrobenzene(NB)is used as probe compound.The rates of degradation of NB were positively correlated with the range of concentrations of CYS from 0 to 10 mmol/L.The introduction of CYS increased the maximum concentration of Fe(Ⅲ)by 12 times and that of Fe(II)by four times in this system.A comparison of systems featuring only CYS or Fe(Ⅱ)showed that the direct reduction of NB was not the main factor influencing its CYS-stimulated removal.The reduction in the concentration of CYS was accompanied by the generation of cystine(CY,the oxidized form of cysteine),and both eventually became stable.The introduction of CY also enhanced NB degradation due to NZVI,accompanied by the regeneration of CYS.This supports the claim that CYS can accelerate electron transfer from NZVI to NB,thus enhancing the efficiency of degradation of NB. | Yuanming Peng Yunsong Mu Chao Xue Anwei Chen Liang Peng Haiyong Wu Si Luo | 2021 | Journal of Environmental Sciences2021，33，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员