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国家自然科学基金(20877090)

作品数:8 被引量:69H指数:5
相关作者:魏东斌杜宇国阴俊霞李立平李敏更多>>
相关机构:中国科学院生态环境研究中心兰州理工大学更多>>
发文基金:国家自然科学基金国家高技术研究发展计划更多>>
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有机紫外防晒剂内分泌干扰效应研究进展被引量:24
2012年
有机紫外防晒剂是一类新兴环境污染物,大量研究表明,部分有机紫外防晒剂能模拟生物体内多种激素的作用,干扰动物和人体正常的内分泌功能,造成严重的健康威胁.本文在大量文献调研的基础上,从个体水平、器官水平、细胞水平和分子水平4个层次,就有机紫外防晒剂对生殖系统、青春期发育、成活率、pS2蛋白、卵黄蛋白原及激素受体等多方面的影响进行了综述,以加深对紫外防晒剂的认识,也为紫外防晒剂的正确使用及相关部门对其进行科学管理提供参考.
李立平魏东斌李敏肖铭阴俊霞杜宇国
关键词:生殖卵黄蛋白原激素受体
医药品和个人护理用品(PPCPs)类污染物氯化转化行为研究进展被引量:14
2012年
针对水处理过程的消毒环节,着重探讨了医药品和个人护理用品(PPCPs)等新型环境污染物在氯化消毒过程中发生的转化行为,并分别针对酚类、醇类、醚类、酮类、胺类等典型结构化合物的氯化转化规律进行了归纳总结.同时,对消毒副产物所引起的潜在环境风险、健康效应进行了评述,为研发、优化该类污染物的处理工艺、提高风险管理水平提供科学依据.
刘奇魏东斌陈振斌杜宇国
关键词:PPCPS消毒氯化消毒副产物
三种纳米氧化物对发光细菌的毒性效应研究
近年来纳米材料广泛应用于各种领域,它们对微生物的毒性效应研究同样也引起了人们的关注。本文利用明亮发光杆菌T3、明亮发光杆菌502、青海弧菌Q67分别检测了纳米ZnO、纳米TiO2、纳米SiO2的毒性效应,并分析比较了三种...
金星龙李晓张宁魏东斌岳俊杰
关键词:发光细菌纳米氧化物毒性效应敏感性
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锰氧化物对有机污染物的转化机制研究进展被引量:10
2013年
以土壤/沉积物中普遍存在且具有较强氧化活性的锰氧化物为研究对象,探讨了水-锰氧化物体系对医药品和个人护理用品等典型环境污染物的转化行为,并从污染物的分子结构出发,分别综述了锰氧化物对酚类、胺类、氮杂环、氮杂环N-氧化物、酸类等典型环境污染物的分子转化机制.为该类污染物环境行为及其潜在风险的科学评价、有效控制奠定理论基础.
李媛魏东斌杜宇国
关键词:有机污染物锰氧化物
Acute toxicity formation potential of benzophenone-type UV filters in chlorination disinfection process被引量:5
2014年
Benzophenones (BPs) are a class of widely used UV filters, which have been frequently detected within multiple environmental matrices. Disinfection is a necessary process in water treatment processes. The transformation behaviors and toxicity changes of 14 BP-type UV filters during chlorination disinfection treatment were investigated in this study. A new index, the acute toxicity formation potential, was proposed to evaluate the toxicity changes and potential risks of BP-type UV filters during chlorination treatment. It was found that 13 of 14 BP-type UV filters exhibited toxicity decreases in the chlorination disinfection process, more or less, while one showed a toxicity increase. The toxicity changes were dependent on substitution effects, such that 2,4-di-hydroxylated or 3-hydroxylated BPs exhibited significant toxicity decreases after chlorination treatment due to the ready cleavage of the aromatic ring. Importantly, the acute toxicity changes could be duplicated in an ambient water matrix.
Qi LiuZhenbin ChenDongbin WeiYuguo Du
A biological safety evaluation on reclaimed water reused as scenic water using a bioassay battery被引量:9
2011年
An assessment method based on three toxicity tests (algae growth inhibition, daphnia immobilization and larval fish toxicity) was used to screen the biological safety of reclaimed water which was reused as sole replenishment for scenic water system in a park (SOF Park) in northern China. A total of 24 water samples were collected from six sites of water system in the SOF Park in four different seasons. The results indicated that: (1) the reclaimed water directly discharged from a reclamation treatment plant near the SOF Park as influent of park had relatively low biological safety (all samples were ranked as C or D); (2) the biological safety of reclaimed water was improved greatly with the ecological reclamation treatment processes composing of artificial wetland system and followed oxidation pond system; (3) the biological safety of reclaimed water in the main lake of SOF Park kept at a health status during different seasons (all samples were ranked as A); (4) there was some certain correlation (R2= 0.5737) between the sum of toxicity scores and dissolved organic carbon for the studied water samples. It was concluded that the assessment method was reliable to screen the safety of reclaimed water reused as scenic water, and the reclaimed water with further ecological purification processes such as artificial wetland and oxidation pond system can be safely reused as scenic water in park.
Dongbin Wei Zhuowei Tan Yuguo Du
关键词:BIOASSAY
色谱及联用技术在药物污染检测中的应用被引量:2
2011年
医药品是一类新型环境污染物,由于其具有长期输入、环境中降解/去除缓慢、生物效应显著等特性被界定为"准持久性"污染物,受到社会各界的广泛关注.为更好了解该类污染物在环境中的迁移转化规律和生物效应,分析检测是必不可少的环节,本文就近年来我国运用色谱及联用技术检测药物污染的方法进行综述.
魏东斌肖铭阴俊霞杜宇国
关键词:医药品
Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes被引量:7
2012年
The reclamation and reuse of wastewater is one of the possible ways to relieve the serious fresh water resource crisis in China. Efficient reclamation treatment technologies ensure the safe reuse of reclaimed water. In order to screen out and evaluate technologies appropriate for reclamation treatment, a great deal of efforts have been brought to bear. In the present study, a toxicity-based method including a Photobacterium phosphoreum test for acute toxicity and SOS/umu test for genotoxicity, accompanied by the traditional physicochemical parameters DOC (dissolved organic carbon) and UV254 (absorbance at 254 nm), was used to measure the treatment performance of different reclamation processes, including the anaerobic-anoxic-oxic biological process (A^2O) and subsequent physical/chemical reclamation processes (ultrafiltration, ozonation, chlorination). It was found that for the secondary effluent after the Aao process, both the toxicity and physicochemical indices had greatly decreased compared with those of the influent. However, chemical reclamation processes such as ozonation and chlorination could possibly raise toxicity levels again. Fortunately, the toxicity elevation could be avoided by optimizing the ozone dosage and using activated carbon after ozonation. It was noted that by increasing the ozone dosage to 10 mg/L and employing activated carbon with more than 10 min hydraulic retention time, toxicity elevation was controlled. Furthermore, it was shown that pre-ozonation before activated carbon and chlorination played an important role in removing organic compounds and reducing the toxicity formation potential. The toxicity test could serve as a valuable tool to evaluate the performance of reclamation processes.
Dongbin WeiZhuowei TanYuguo Du
关键词:GENOTOXICITY
头孢曲松氯化消毒转化产物鉴定及机理研究被引量:1
2013年
以头孢曲松为目标化合物,探索其在氯消毒处理中的转化机理.结果显示头孢曲松在氯化处理中主要发生两种反应,一种为氧化反应,另一种为氯化反应.头孢曲松分子中的硫醚官能团经氧化生成亚砜产物,消毒剂中的氯原子与噻唑环中的4-C原子发生亲电取代反应生成氯代产物.更为重要的是,本研究还探讨了低浓度头孢曲松在环境水体基质中的氯化转化特征,结果表明,本文所推测的反应机理在含头孢曲松的实际环境水样的氯化处理中同样发生.
李立平魏东斌杜宇国
关键词:头孢曲松氯化消毒副产物
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