摘要
结合煤中氟的测定原理,对高温燃烧水解—氟离子选择电极法测定煤中氟的影响因素进行分析研究,提出扣除由石英砂引起的氟空白值,对氟电极实际斜率测定的简易方法进行设计,指出甘汞电极、溶液温度、电位响应时间以及氟标准工作溶液浓度的选择对煤中氟测定的影响,并探讨了相应的解决办法以保证氟测定结果的准确性。
Combined with the principle of determination of total fluorine in coal,the influencing factors for the determination of total fluorine in coal by high temperature combustion hydrolysis-fluoride-ion selective electrode method were studied,the deduction of fluorine blank value introduced by quartz sand was firstly proposed,a simple method for the determination of the actual slope of the fluorine electrode was designed,how the factors,such as calomel electrode,solution temperature,potential response time and selection for fluorine standard working solution concentration affected the determination of total fluorine were pointed out,corresponding measurements which could ensure the accuracy of the determination of total fluorine in coal were discussed.
出处
《煤质技术》
2016年第2期28-30,33,共4页
Coal Quality Technology
关键词
离子选择电极法
煤中氟
影响因素
空白值
高温燃烧水解
氟电极
ion selective electrode method
fluorine in coal
influencing factors
blank value
high temperature combustion hydrolysis
fluoride electrode
