摘要
研究了煤矿许用乳化炸药中消焰剂的测定方法。以乙醇和水为溶剂,使煤矿许用乳化炸药油、水相分离,并在pH值为6 0～7 2介质中,以5%铬酸钾为指示剂,用硝酸银标准溶液滴定溶液中的Cl-,计算出煤矿许用乳化炸药中消焰剂的含量。该方法简便、快速、准确,其相对标准偏差为0 18%～1 31%。
A method has been established for determination of fire-resistant agent in permissible emulsion explosive for coal-mine.In this method,the oil and water phases of the explosive are separated by use of ethanol and water as dissolvent;the Cl^(-) of the solution is titrated by use of standard silver nitrate solution with 5% potassium chromate as indicator and at pH 6.0～7.2;the content of fire-resistant agent in the explosive is calculated.This method is simple,rapid and precise,with a relative standard deviation of 0.18%～1.31%.
关键词
煤矿许用乳化炸药
消焰剂
测定
PH值
Permissible emulsion explosive for coal-mine
Fire-resistant agent
Determination
