Methods: Polysaccharides of Snakegourd root were obtained by hot water extraction and ethanol precipitation and its contents were determined with Phenol vitriol colorimetry.
方法：用水提醇沉法提取天花粉多糖，用酚-硫酸比色法测定多糖含量。
The chloroform solution of 4-Amino-antipyrine was used to measure the phenol in water by extraction and photometer. The method and the precision were discussed in this paper.
本文通过实验的方法，用三氯甲烷处理4- 氨基安替比林溶液，解决了用4-氨基安替比林测定挥发酚实验空白值高的问题，并确定了三氯甲烷最佳使用量。
It shows that the extraction method can be used for enriching trace nonyl-phenol in water efficiently.
该萃取方法可有效富集水中痕量壬基酚。
It shows that the extraction method can be used for enriching trace nonyl-phenol in water efficiently.
该萃取方法可有效富集水中痕量壬基酚。
应用推荐