摘要
根据氰乙基磺酸钠(β-SPN)的分子结构及性质,建立了以NaOH为滴定剂,甲基红为指示剂测定NaSCN溶液中β3-SPN含量的方法。结果表明,所称样品的质量与消耗的滴定剂体积差值之间具有很好的线性关系:△V=0.5075W-0.0325,r=0.9999;精密度实验的RSD=0.0127%:分析结果的准确度为=-0.175%。该方法可靠,可用于NaSCN溶液中β-SPN含量的测定。
A method for determiningβ-SPN content in recoverable sodium thiocyanate solution was proposed based on molecule structure and property of cyanoethyl sodium sulfonate（β-SPN）.In the experiment,NaOH was used as titrant,methyl red was used as inindicator to do titration.The linear relationship between the mass of sample and the volume difference of titration was：△V= 0.5075W-0.0325,r=0.9999.The RSD of the precision test was 0.0127%and the accuracy was- 0.175%.The method gave good reliability and high repeatability.It could be used to determineβ-SPN content in sodium thiocyanate solution
