摘要
提出了用离子色谱法测定烤烟中氯离子和硫酸根离子及氟离子的方法.采用IonPacAS14A阴离子交换分离柱、8mmol/L碳酸钠和1mmol/L碳酸氢钠混合液为流动相,自动再生抑制型电导检测在15min内完成烤烟中F-,Cl-,SO42-的测定,建立起针对烤烟F-,Cl-,SO42-的离子色谱法分析方法.该法具有良好的线性(相关系数为0.9991～0.9999)和重复性(相对偏差小于4.31%),回收率为95.2%～103.1%.
An ion chromatographic method for the determination of fluoride, chloride and sulfate in the flue-curd tobacco was developed. The separation of the anions was achieved on an IonPac AS14A column with a mixture of 8.0 mmol/L Na2CO3 and 1.0 mmol/L NaHCO3 as mobile phase, and the detection was performed by a conductivity detector （self-regenerated suppression ）. Fluoride, chloride and sulfate could be identified within 15 min. The method has good linearity with correlation coefficients between 0.9991 and 0.999 9 and the RSD% of standards were less than 4.31%. The recoveries of anions in the sample were between 95.2% and 103.1%.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第6期620-622,共3页
Journal of Hunan Agricultural University(Natural Sciences)
基金
云南省烟草专卖局资助项目(2004A02)
