Determination of the herbicide fluroxypyr in oil matrices

The purpose of this study was to develop a method for the determination of fluroxypyr (4-amino-3,5-dichloro-6-fluro2-pyridyloxyacetic acid) residue in palm oil namely crude palm oil (CPO) and crude palm kernel oil (CPKO). The method involves the extraction of the herbicide from the oil matrix followed by low temperature precipitation and finally quantification of the residues using the high performance liquid chromatography (HPLC). The extraction efficiency of the method was evaluated by conducting recovery studies. The recovery of fluroxypyr from the fortified CPO samples ranged from 78%–111% with the relative values for the coefficient of variation ranging from 1.4 to 8.6%. Furthermore, the recovery of fluroxypyr from the spiked CPKO samples ranged from 91–107% with the relative values for the coefficient of variation ranging from 0.6 to 4.5%. The minimum detection limit of fluroxypyr in CPO and CPKO was 0.05 μg/g. The method was used to determine fluroxypyr residues from the field-treated samples of CPO and CPKO. When fluroxypyr was used for weed control in oil palm plantations no residue was detected in CPO and CPKO irrespective of the sampling interval and the dosage applied at the recommended or double the manufacturer's recommended dosage.     

咪唑啉硫酸酯盐的缓蚀性能及协同增效作用研究

参照SY/T 5405-1996《酸化用缓蚀剂性能试验方法及评价指标》,采用静态失重法评价咪唑啉硫酸酯盐缓蚀剂1-羟乙基-2-油酸基咪唑啉硫酸酯盐(ISES)与丙炔醇(BCC)、非离子表面活性剂OP-10组成的二元和三元复配缓蚀剂体系对N80钢的缓蚀性能,考察二元和三元复配缓蚀剂体系的协同增效作用。通过动电位极化扫描和电化学阻抗分析对ISES及其复配体系的电化学行为进行研究。     

河西走廊绿洲城市化及可持续对策

本文分析了河西走廊绿州城市化现状 ,认为经济基础薄弱、产业结构不合理、水资源匮乏、生态环境脆弱是河西走廊绿洲城市化的主要限制因素 ,指出河西绿洲加速城市化应加大产业结构调整力度 ,系统规划城市建设 ,加强水资源统一管理和节水建设 ,大力发展教育事业和提高农业产业化水平     

应用GPS-X软件模拟CAST污水处理厂及优化化学除磷

利用GPS-X软件模拟某污水处理厂循环式活性污泥法(CAST)工艺的处理效果,同时对其化学除磷过程提出改进措施。结合实测进水COD组分(SS,XSandSA),对ASM2模型参数(μh、Ks、kh、Kx)进行了校核,参数优化结果为:μh=4.36 d-1,Ks=1.6 g COD/m3,kh=2.01 d-1,Kx=0.01 g COD/m3。经模型组分和参数校正后出水COD、NH4+-N以及TN的模拟结果与实测值的误差小于10%。根据进水TP浓度和流量变化,实时灵活地调整化学药品投加量,模拟结果显示可以节约50%左右的消耗量。     

环境雌激素对男性生育因子的破坏作用

本文介绍了环境雌激素多氯联苯(PCBs)和酞酸酯(PEs)对男性生育因子的破坏作用,以及PCBs和PEs对精液参数的作用机制．对生育和不育男性的精液参数间的差异、精液异雌激素和精液参数间的相关性,以及不同范畴的不育男性精液质量的分析表明,PCBs和PEs对无明显病原学的不育男性的精液质量可能有破坏作用．     

Fast and reversible adsorption for dibenzothiophene in fuel oils with metallic nano-copper supported on mesoporous silica

Environmental Science and Pollution Research - Dibenzothiophene (DBT) in fuel oils causes the release of toxic sulfur oxide gases, and it is necessary to remove DBT in fuels. Herein, metallic...     

基于低碳经济视角的环境资源会计的探析

随着低碳经济的发展,人们意识到环境问题日益严重,尤其作为企业,如何更好地履行社会责任需重点关注。低碳经济不仅影响企业的经济活动,而且使企业的会计核算面临更大的挑战。与传统的会计相比,环境资源会计在加强环境资源管理、促进低碳经济发展方面起到至关重要的作用。然而中国目前还没有构建完善的环境资源会计理论体系来指导相关工作。基于低碳经济视角的环境资源会计核算分析了环境资源会计的内涵、核算对象、目标、确认、计量和信息披露,形成了核算框架,为环境资源会计的具体实施提供参考。     

浅谈环保科技档案的开发利用

阐述了环保科技档案资源开发利用的重要性及现状,针对存在的问题提出了开发利用环境科技档案的措施。     

浅谈环保科技档案的现代化管理

实现环保科技档案现代化管理可以提高储存、收藏能力,提高信息处理和信息资源的开发利用能力.为此,应加强人员的培养,加大基础设施建设,选择相对先进,适合自身使用的软件系统,加快实现环保科技档案的现代化管理.     

Bird's‐eye view of the environmental attitude types in the sustainable consumption context

Environmental attitudes are considered to be important factors that influence sustainable consumption. Typically, attitudes fall into two main types: a general environmental attitude (GEA) and a specific environmental attitude (SEA). This study found that the effect of the SEA is stronger than the GEA in regard to sustainable consumption behavior. Also, when analyzing the purchasing behavior of green products, the SEA is a more appropriate and consistent predictor of behavior than the GEA. The study suggests a more operationalized and salient definition of the intended meaning of the term “environmental attitude,” and also advises researchers and marketing professionals to use a framework that contains both types of environmental attitudes in order to better understand what drives the attitude–behavior gap in green consumer behavior.