高温燃烧水解-离子色谱法同时测定煤中氟和氯  

Determination of fluorine and chlorine in coal by high temperature combustion hydrolyzing-ion chromatography

作　　者：乔柱[1] 姜郁[1] 王恒[1] 吴扬[1] 秦立俊[1] 

机构地区：[1]连云港出入境检验检疫局,江苏连云港222042

出　　处：《煤质技术》2015年第1期6-9,共4页Coal Quality Technology

摘　　要：对淋洗液浓度和泵速对氟氯分离效果的影响、离子色谱法与选择性电极法测氟氯结果比较、线性关系和方法检出限、方法精密度和准确度、方法适用性等进行探讨及研究,建立了高温燃烧水解-离子色谱法同时测定煤中氟和氯的方法。研究结果表明:煤样在氧气和水蒸气下燃烧、水解,冷凝并收集热解气,选用Dionex AS11-HC阴离子分析柱,以20mmol/L KOH作淋洗液,自动再生抑制型电导检测器检测,通过外标法定测定煤中氟和氯的含量,方法简单快速,使用试剂少,F-、Cl-方法检出限分别为0.022μg/mL、0.041μg/mL,其精密度、准确度均满足标准方法中的相关要求。The influence of leaching liquid concentration and pump speed on fluorine chlorine separation effect,comparison of test results using ion chromatography method and fluoride selective electrode method,the linear relation,method detection limit,precision,accuracy and applicability of the method were discussed and researched in this paper.The high temperature combustion hydrolyzing ion chromatography for the simultaneous determination of chlorine and fluorine in coal was established.Research results showed that coal sample burning,hydrolysis,condensation and collection pyrolysis gas were included in determination process of fluorine and chlorine.Dionex AS11-HC anion analysis column was selected,and taking 20 mmol/L KOH as leaching liquid,automatical regeneration inhibit type conductance detection device detection was also used,the determination of fluoride and chlorine through outside marked statutory could be simple,fast and reagent saving,detection limits of F^-、Cl^-were 0.022μg/mL and 0.041μg/mL respectively,precision and accuracy could meet the related requirements.

关 键 词：煤炭 高温燃烧水解 离子色谱法 氟 氯 方法检出限 精密度 准确度 

分 类 号：TQ533.9[化学工程—煤化学工程]