甲烷氯化物中微量氯单质快速分析方法研究  

Study on Rapid Analysis Method of Trace Chlorine in Methane Chloride

作　　者：陈彩琴 邵红才 吴云竹 傅永斌 CHEN Caiqin;SHAO Hongcai;WU Yunzhu;FU Yongbin(Zhejiang Quhua Fluoride Chemical Co.Ltd.,Quzhou,Zhejiang 324004)

机构地区：[1]浙江衢化氟化学有限公司,浙江衢州324004

出　　处：《化工生产与技术》2024年第2期37-39,I0005,共4页Chemical Production and Technology

摘　　要：为快速检测甲烷氯化物生产过程反应液中氯单质含量,以碘化钾为显色剂,将反应液中氯单质还原成氯离子,碘离子氧化成碘单质,通过目视比色法测定。通过建立标准色阶,考察显色剂用量,显色时间等对结果的影响。结果表明,该方法具有较高的准确性,加标回收率在96.8%~103.3%,检出限为1 mg/L,操作简单,可满足生产紧急需要。To quickly detect the content of chlorine element in the reaction solution of methane chloride production process,potassium iodide is used as a chromogenic agent to reduce chlorine element in the reaction solution to chloride ions,and iodine ions are oxidized to iodine element,which is determined by visual colorimetry.By establishing a standard color scale,it investigates the effects of reagent dosage,color development time,and other factors on the results.The results show that the method has high accuracy,with a spiked recovery rate of 96.8%to 103.3%,a detection limit of 1 mg/L,simple operation,and can meet urgent production needs.

关 键 词：甲烷氯化物 氯单质 比色法 

分 类 号：TQ222.214[化学工程—有机化工]