摘要
提出了离子交换色谱-脉冲安培检测法分离测定卷烟主流烟气中硫化氢的含量。样品中的硫化氢经含有100 mmol·L^(-1)氢氧化钠-400 mmol·L^(-1)乙酸钠-0.5%乙二胺-20 mmol·L^(-1)抗坏血酸混合溶液捕集后,以IonPacAS7阴离子交换色谱柱为分离柱、100 mmol·L^(-1)氢氧化钠-400 mmol·L^(-1)乙酸钠-0.5%乙二胺混合溶液为淋洗液洗脱,银电极为工作电极,pH/Ag/AgCl电极为复合参比电极,用脉冲安培检测法进行测定。硫离子的质量浓度在0.1～5.0 mg·L^(-1)范围内与其峰面积呈线性关系,检出限为1.52μg·L^(-1)。方法的加标回收率在92.4%～96.4%之间,测定值的相对标准偏差(n=6)在2.0%～3.3%之间。
Pulse amperometry with separation by ion exchange chromatography was applied to the determination of hydrogen sulfide （H2S） in mainstream of cigarette smoke. Hz S in mainstream of cigarette smoke was trapped in a mixture containing solutions of 100 mmol·L^-1NaOH-400 mmol·L^-1 sodium acetate-0. 5% ethylene diamine-20 mmol·L^-1 ascorbic acid. IonPac AS7 anion exchange column was used as separation column and a mixture containing solutions of 100 mmol. L-1 NaOH-400 mmol·L^-1 sodium acetate-0. 5% ethylene diamine were used as eluant in the elution. In the pulse amperometric detection, silver electrode was used as working electrode, pH/Ag/AgCl electrode was used as composite reference electrode. Linear relationship between values of peak area and mass concentration of S^2- was obtained in the range of 0. 1-5.0 mg ·L^-1, with detection limit of 1.52μg·L^-1 . Test for recovery was made by addition of the standard of S^2- to sample of mainstream of cigarette smoke as the matrix, values of recovery obtained were in the range of 92.4%-96.4% with RSD＇s （n=6） in the range of 2. 0 %- 3. 3 %.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2013年第2期142-145,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
离子交换色谱
脉冲安培检测器
卷烟主流烟气
硫化氢
Ion exchange chromatography
Pulse amperometry
Mainstream of cigarette smoke
Hydrogensul fide
作者简介
作者简介：刘献军（1972-），男，四川乐至人，工程师，硕士，研究方向为卷烟烟气化学及烟气分析。E-mail：njliuxianjun@sina．com
