Recent advances in ionic liquids-based hybrid processes for CO2 capture and utilization

CO₂ capture and utilization (CCU) is an effective strategy to mitigate global warming. Absorption, adsorption and membranes are methods used for CO₂ separation and capture, and various catalytic pathways have also been developed for CO₂ utilization. Although widely researched and used in industry, these processes are energy-intensive and this challenge needs to be overcome. To realize further optimization, novel materials and processes are continuously being developed. New generation materials such as ionic liquids (ILs) have shown promising potential for cost-effective CO₂ capture and utilization. This study reviews the current status of ILs-based solvents, adsorbents, membranes, catalysts and their hybrid processes for CO₂ capture and utilization. The special properties of ILs are integrated into new materials through hybridization, which significantly improves the performance in the process of CCU.     

原子荧光光谱法测定水中低含量锡

采用原子荧光光谱法测定水中锡,结果表明,方法检测限为0．14μg／L,在0、0μg／L～100μg／L范围内线性良好。不同浓度标准溶液测定的相对误差≤2．0％,实际样品测定的加标回收率在90．0％～109％之间,相对标准差≤6．1％,准确度和精密度均较好。