摘要
肼与对二甲氨基苯甲醛在酸性条件下反应，生成黄色对二甲氨苄连氮。在１．００—０．００２ｍｇ／Ｌ范围内，反应物浓度与颜色成正比，最大吸收波长４５８ｕｍ。利用该原理可以测定水质中肼的含量。方法简便，灵敏度高，干扰物质少。经８个实验室对０．１００、０．５００、０．８００ｍｇ／Ｌ肼标准溶液的验证，实验室内标准偏差３．７％、０．９％、０．６％。实验室间相对偏差４．４％、１．３％、０．９％。回收率为８８％－１１０％。能满足水和废水中肼测定的要求。
The condition for reaction of hydrazine with dimethylaminobenzaldehyde and the composition of complex formed in the presence of acid have been studied.The concentration of the complex is in proportion to the colour in a range of 1.00-0.002mg/L.The maximum absorbance is at 458um. The relative standard deviations with in the labs are 3.7%,0.9% and 0. 6% at 0.100, 0. 500 and 0.800mg/ L, respectively;and those among different labs are 4. 4%,1.3% and 0. 9%,respectively.The recoveries are 88% to 110%.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第1期74-77,共4页
Environmental Science
