Temporal and spatial analysis of the ecosystem service values in the Three Gorges Reservoir area of China based on land use change

Environmental Science and Pollution Research - The Three Gorges Reservoir area (TGRA) has complex geological conditions and a fragile ecological environment. The construction of the Three Gorges...     

Ultrasensitive electrochemical detection of bisphenol A using composites of MoS2 nanoflowers,CoS2 nano-polyhedrons and reduced graphene oxide

Environmental Chemistry Letters - Bisphenol A is a pollutant issued from the degradation of plastics such as polycarbonate and epoxy resins, yet actual bisphenol A monitoring in environmental...     

A novel method for dearsenization from arsenic-bearing waste slag by selective chlorination and low-temperature volatilization

Environmental Science and Pollution Research - Because of the widespread presence of arsenic in various smelting waste slags, it not only hinders the recycling and utilization of waste slag, but...     

Recent insights into greywater treatment: a comprehensive review on characteristics,treatment technologies,and pollutant removal mechanisms

Environmental Science and Pollution Research - With the rapid socio-economic and industrial development, the problem of water shortage is becoming increasingly serious. Seeking alternative water...     

Dissipation behavior and risk assessment of butralin in soybean and soil under field conditions

Dissipation behavior, final residue, and risk assessment of butralin in soybean, green soybean, plant, and soil were investigated. Butralin residues were extracted with acetonitrile and then soybean samples were detected with gas chromatography-mass spectrometer (GC-MS) and soil samples were determined with GC with nitrogen phosphorous detector (GC-NPD). The limit of quantification (LOQ) of the method was 0.01 mg/kg for soybean, green soybean, plant, and soil. Average recoveries ranged from 90.4 ~ 98.2% for green soybean, 86.2 ~ 86.6% for soybean, 86.0 ~ 98.8% for plant, and 85.0 ~ 106.8% for soil. The relative standard deviations (RSDs) were 2.0 ~ 7.2% for green soybean, 2.0 ~ 3.0% for soybean, 3.1 ~ 8.1% for plant, and 1.8 ~ 6.6% for soil. Half-lives of butralin in soil samples varied in the range of 11–22 days. At harvest time, final residues of butralin in soybean and green soybean were lower than LOQ. Risk assessment demonstrated that, at recommended dosage and frequency, butralin would not induce significant harm on humans. The study could be used as a quantitative basis for application of butralin on soybean.     

三峡工程与长江中游浅层承压水动态

三峡水库正常运行后,坝下枯季下泄流量增加,将使荆江水位比建坝前抬高１－２ｍ。由于长江与两侧浅层承压水有着十分密切的联系。长江枯季水位升高将阻滞两岸地下水向长江排泄,从而使两岸承压水位相对抬高。观测研究表明,长江对承压水动态的影响程度随距离的增加而减弱,二者成分段线性反比的关系。在龙口观测剖面,如长江水位升高１ｍ,则在距离为０－１ｋｍ地段,承压水位将抬高１－０．２ｍ;在１－４ｋｍ地段,抬高０．２５－     

综合整治府南河走可持续发展之路

府南河工程带动成都市城市基础设施建设,产生了巨大 在的社会效益,促进了环境保护及城市生态的良性循环,造就了成都市建设现代化商贸中心的前提条件,为成都市的可持续发展奠定了基础。     

SYL-01破乳剂的合成及性能测试

在国内外研究的基础上通过实验以MAA、AA、BuAc、MMAc为原料，采用乳液聚合的方法合成了一种新型的不含烷氧基的水溶性W／O原油破乳剂SYL-01。反应条件与反应物的用量研究表明：反应物最佳配比为AA：MAA：BuAc：MMAC＝0．75：0．25：10：4。对原油乳液的破乳实验说明：SYL－01与目前使用的9901破乳剂性能相当，脱水率较高。SYL－01原料价廉易得，不使用易燃易爆的气体原料，工艺简单，有较好的开发应用前景。