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Aijun Ding Wei Nie Xin Huang Xuguang Chi Jianning Sun Veli-Matti Kerminen Zheng Xu Weidong Guo Tuukka Petäjä Xiuqun Yang Markku Kulmala Congbin Fu 《Frontiers of Environmental Science & Engineering》2016,10(5):15
This work presents an overall introduction to the Station for Observing Regional Processes of the Earth System–SORPES in Nanjing, East China, and gives an overview about main scientific findings in studies of air pollution-weather/climate interactions obtained since 2011. The main results summarized in this paper include overall characteristics of trace gases and aerosols, chemical transformation mechanisms for secondary pollutants like O3, HONO and secondary inorganic aerosols, and the air pollution–weather/climate interactions and feedbacks in mixed air pollution plumes from sources like fossil fuel combustion, biomass burning and dust storms. The future outlook of the development plan on instrumentation, networking and data-sharing for the SORPES station is also discussed. 相似文献
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A synchronous fluorescence spectroscopy (SFS) method was developed for determination of pyrene in the gills of exposed fish. The wavelength differences (Δλ) of 50 nm was maintained between excitation and emission wavelengths and it was found to be suitable for the effective determination of pyrene in fish gills; the peak were observed at λex 334.5 nm. Linear relationships between SFS intensity and the concentration of pyrene in n-hexane solution were established. It was demonstrated that the SFS method was effective, simple, and less expensive, providing an attractive alternative for the rapid analysis of pyrene in fish gills. 相似文献
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Characteristics of oxytetracycline sorption and potential bioavailability in soils with various physical-chemical properties 总被引:1,自引:0,他引:1
Veterinary antibiotics are widely used for disease treatment, prevention and animal growth promoting. Frequent detection of veterinary antibiotics in environments, caused by land application of untreated or even treated antibiotics-containing animal wastes, has posed the growing concern of their adverse effect on natural ecosystems. Oxytetracycline (OTC) is one of the most widely-used veterinary antibiotics in livestock industry. OTC present as a cation, zwitterions, or net negatively charged ion in soils complicates predicting its sorption characteristics and potential bioavailability and toxicity. This study was to identify soil properties influencing OTC sorption and its subsequent bioavailability in five soils with various physical-chemical properties. A solution used to determine bioavailable analytes in soils and sediments, 1 M MgCl2 (pH 8.5), was chosen to desorb the potentially bioavailable fraction of OTC sorbed onto soils. Our results demonstrated that soils with higher illite content and permanent cation exchange capacity have higher OTC sorption capacity, but increase the availability of sorbed OTC indicated by higher release of sorbed OTC from soils into aqueous phase in 1 M MgCl2 (pH 8.5). Reversely, soil organic matter (SOM), clay, kaolinite, variable cation exchange capacity, DCB-Fe and -Al have lower OTC sorption capacity, but decrease the release of sorbed OTC from soils into 1 M MgCl2. These findings indicate that SOM and clay greatly influence OTC adsorption and potential availability. This study contributes significantly to our understanding of the potential bioavailability of sorbed OTC and the effects of soil properties on OTC sorption behaviors in soils. 相似文献
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高效石油降解菌的筛选及其在油田废水深度处理中的应用 总被引:18,自引:0,他引:18
从石油污染的土壤和水体中富集、分离到12株高效石油降解菌,各单菌株的降油率为40.3%~57.6%,其中O—8—3、O—28—2和O—46菌可耐受40℃的温度和1.5%的盐度。经初步鉴定,这3株菌分别为假单胞菌(Pseudomonass sp.)、芽孢杆菌(Bacilluss sp.)和不动杆菌(Acinetobacter sp.)。与单-O-8-3菌株相比,0-8-3/O-28-2/O-46混合菌株对石油的降解率可提高20.1%,可耐受石油类初始质量浓度从2000mg/L提高到5000mg/L。通过在实验室接种O—8—3/O—28—2/O—46混合菌株于生物反应器中处理胜利油田采油废水的试验结果表明,72h内石油污染物的降解率达96.9%,比接种自然细菌群落的降解率提高了60.7%。 相似文献
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海洋石油开发中含油污水处理与溢油防治技术 总被引:5,自引:2,他引:5
海洋石油工业清洁生产的关键是防止油污染,而油污染的主要来源是日常排放的含油污水中的油及事故性溢油。首先概述了海上含油污水的处理方法及其原理,并结合实际论述了主要采用的处理工艺,并分析了各工艺技术的处理效果和存在的问题。文章还叙述了海上溢油事故及防止溢油事故发生所应采取的多方位预防措施;建立管理体系,加强管理,通过培训来提高全员操作管理水平,建立溢油处置应急计划和组织系统。在溢油控制方面建立海上溢油漂移模拟程序,对溢油进行实时监控,并对采用的溢油处理装置及方法进行了评述 相似文献