Application the Cyclodextrin in Environmental Management

介绍了环糊精在富集和治理环境有机污染物方面的应用成果,以及环糊精对有机污染物生物降解过程影响方面的研究结果,提出环糊精在污染治理方面实际应用的可能性。The utilization of cyclodextrins(CDs)in enrichment and removal of environmental organic pollutants and their effects on biodegradation of environmental organic pollutants have been introduced in this paper. It claims that CDs can play a very important role in managing environmental organic pollutants

Study on environmental fates of polynuclear aromatic hydrocarbons in contaminated coastal sediment

本文在现场情况下 ,研究了自然条件下受污染海岸带沉积物中的 7种多环芳烃(PolynuclearAromaticHydrocarbons ,简称PAHs)的解吸动力学行为 .结果表明 ,7种PAHs的解吸动力学行为可以用二元模型描述 .文中并将所得数据与文献报道的数据进行了比较 .The desorption behaviours of seven polynuclear aromatic hydrocarbons (PAHs) in contaminated coastal sediment have been studied under field. Total sedimentary concentrations of acenaphthene, benzo(a)anthracene, benzo(k)fluoranthene, benzo(a)pyrene, chrysene, fluoranthene and naphthalene were followed after the contaminated sediment samples had been translocated to a pristine coastal environment. The desorption kinetics of these PAHs were found to be describable by a two compartment model. The field desorption data were compared to other laboratory based sorption desorption kinetic data in the literature and were found to be in accordance with results obtained via mesocosm approach involving direct extraction of desorbed PAHs from the aqueous phase. However, when compared to results generated by conventional gas stripping desorption technique, the field desorption rates were at least an order of magnitude smaller.国家自然科学基金!资助项目 (2 99770 16 ) ;; 福建省自然科学基金!资助项目 (D9910 0 0 8) ;; 教育部重点项目!(99180 ) ;; 香港城市

Effects of HPCD on the biodegradation of pyrene by synchronous fluorimetry

[中文文摘]利用同步荧光法研究了羟丙基-(-环糊精对微生物降解矿物盐水溶液中溶解态芘的影响。结果表明,加入一定量的HPCD,体系的荧光强度大大增加;芘的表观溶解度增大。所建方法在降解过程中对芘的检测限为0.017 ng/mL。相对标准偏差小于0.4％(n=7)。降解实验结果表明,HPCD的存在增加了芘的生物有效性,从而加快了微生物(Alcaligenes xylosoxi-dants,Ax)降解芘的速率。[英文文摘]Effects of hydroxypropyl-β-cyclodextrin (HPCD) on biodegradation of dissolved pyrene in Mineral sails media ( MSM) by Alcaligenes xylosoxidants(Ax) were studied with synchronous fluorimetry. It is demonstrated that in the presence of a certain amount of HPCD in the MSM solution the sensitivity of detection of pyrene is not only increased by synchronous fluorometry, but also the biodegradation rate of pyrene is enhanced, since the formation of inclusion complex between pyrene and HPCD make the appearance solubility of pyrene to increase out from 28.1ng/mL to 3.2mg/L in MSM aqueous solution. The linera range of the established method was found out to be 0-1820ng/mL and the detection limit is 0.017 ng/mL with the relative standard deviation less than 0.4%(n=7).国家自然科学基金(20377035)资助项