减压膜蒸馏技术对含铬溶液的分离效果,以及分离过程中膜通量、截留率随实验操作因素变化的规律的认识;
The experimental research of the separation of chromium aqueous solution by VMD technology, especially the effects of operation conditions on membrane flux and chromium rejection.
在磷酸盐缓冲溶液中加热蒸馏三聚氰胺废水样品,逸出的氨被吸收后通过酸碱滴定测定其含量。
The melamine wastewater sample is distillated in the phosphate buffer solution, the emitted ammonia is absorbed, and its content is determined by acid-alkali titration.
用蒸馏水或乙醇水溶液抽提试样中的水溶性酸或碱,然后用酸度计或指示剂对抽提物进行测定。
It USES distilled water and alcohol to refine water soluble acid and alkali of sample and then test the extractive with PH indicator.
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