Water Environmental Risk Assessment Research Articles

Water environmental risk assessment and regionalization in southeast coastal basins of China

Water environmental risk assessment and regionalization in southeast coastal basins of China

Water-environmental risk assessment of the Beijing–Tianjin–Hebei collaborative development region in China

ABSTRACTWith the rapid development of social and economic conditions in the Beijing–Tianjin–Hebei (BTH) collaborative development region in China, the water-environmental problems gradually evolve into a regional problem. As an important tool of predicting and preventing these problems, water-environmental risk assessment (WERA) plays an increasingly important role in environment management. This study mainly targets the surface water environment and takes the BTH region as a study area in developing a water-environmental risk assessment index system based on the Driving force-Pressures-States-Impacts-Responses model. The weighting, risk, and zoning of each index are determined using multiple methods such as the Analytic Hierarchy Process, fuzzy comprehensive evaluation, and geographic information system technology. Further discussions are made to analyze the leading factors of high-risk units, the relationship between the risk level and social economy, and the uncertainty of WERA. Generally speaking, results show that the relative high-risk areas mainly distribute in Beijing, Tianjin, Shijiazhuang, and Tangshan, and the relative low-risk areas mainly distribute in Chengde and Zhangjiakou. The remaining parts of the region are at the middle-risk level. The results also show a positive correlation between the risk level and the social economy. This study gathered lots of data and carried out a number of calculation work, and is expected to improve the WERA methods and help managers set the priorities for local water-environmental management and make more effective decisions in the context of BTH collaborative development.

Simultaneous determination of 22 typical pharmaceuticals and personal care products in environmental water using ultra performance liquid chromatography- triple quadrupole mass spectrometry

An analytical method for simultaneous determination of 22 typical pharmaceuticals and personal care products (PPCPs) in environmental water samples was developed by ultra performance liquid chromatography-triple quadrupole mass spectrometry (UPLC-MS/MS). An Oasis HLB solid phase extraction cartridge, methanol as washing solution, water containing 0. 1% formic acid-methanol (7:3, v/v) as the mobile phases were selected for sample pretreatment and chromatographic separation. Based on the optimized sample pretreatment procedures and separation condition, the target recoveries ranged from 73% to 125% in water with the relative standard deviations ( RSDs) from 8.8% to 17.5%, and the linear ranges were from 2 to 2 000 µg/L with correlation coefficients (R2) not less than 0.997. The method can be applied to simultaneous determination of the 22 typical PPCPs in environmental water samples because of its low detection limits and high recoveries. It can provide support and help for the related research on water environmental risk assessment and control of the micro-organic pollutants.

Water Environment Risk Assessment System and Practice of Management for the Three Gorges Reservoir Based on List Method

In view of the water impact of environmental risk of industrial enterprises in the Three Gorges Reservoir, based on the existing methods of water environmental risk assessment and integrated the Germany detailed list assessment method; we have established a brand-new index system which could meet with the Three Gorges Reservoir water environment risk evaluation, and the system has the feature of quantitative indicators and risk classification. Site Case analysis showed that: evaluation results and the qualitative judgment are on the spot consistent with the environment Supervisory department, which demonstrated that the risk assessment system is reasonable and has easier operability. Meanwhile the system could help the enterprise and the environment Supervisory department to investigate water environment hidden danger, reduce the enterprise water environment risk effectively and provide the scientific basis for the environment Supervisory management's decision-making and the management.