离子色谱法测定卷烟主流烟气中的硫化氢

Determination of Hydrogen Sulfide in Main Stream Smoke of Cigarette by Ion Chromatography

中文关键词:  卷烟烟气  硫化氢  离子色谱法

英文关键词:cigarette smoke  hydrogen sulfide  ion chromatography

中文摘要:

      建立了测定卷烟主流烟气中硫化氢含量的离子色谱法. 采用玻璃纤维滤片捕集卷烟烟气粒相物，并用0.5%（体积分数）乙二胺-50 mmol/L氢氧化钠-250 mmol/L乙酸钠溶液萃取粒相物，吸收液吸收气相物中的硫化氢，合并粒相萃取液与气相吸收液，经离子色谱柱分离，以1.5 mol/L氢氧化钠-1 mol/L乙酸钠-2%（体积分数）乙二胺（40：50：10，体积比）为流动相，安培检测器检测并施加-100 mv的检测电位. 运用方法对12种市售卷烟样品进行了测定，结果表明：方法的线性范围为0.1~5.0 μg/mL，检出限为1.03 μg/mL，定量限为3.41 μg/mL，回收率为102.3%~107.2%，相对标准偏差小于5%. 方法处理简单、准确度高，可以用于卷烟烟气中硫化氢含量的测定.

英文摘要:

      A method has been developed for the determination of hydrogen sulfide in the main stream smoke of cigarette by ion chromatography with the pulsed amperametric detection.The particulate matter in the main stream smoke of cigarette was trapped on a cambridge filter pad, and then was extracted with a mixed solution of 0.5% V/V ethylenediamine-50 mmol/L sodium hydroxide-250 mmol/L sodium acetate.The vapor phase matter was absorbed by the absorption liquid of 0.5% V/V ethylenediamine-50 mmol/L sodium hydroxide-250 mmol/L sodium acetate.The combined extration liquid of the particulate matter and the absorption liquid of the vapor phase matter was separated on an ion chromatographic column with a mixture solution of 1.5 mol/L sodium hydroxide-1 mol/L sodium acetate-2% V/V ethylenediamine as the eluant. Then hydrogen sulfide was determined by an ampere detector with a -100 mv detection potential.Twelve cigarette samples were determined,and the results showed that the linearity range, detection limit, limit of quantitation and recovery were 0.1~5.0 μg/mL,1.03 μg/mL,3.41 μg/mL and 102.3%~107.2%, respectively.And the relative standard deviation was less than 5%.This method is of simple pretreatment,higher accuracy,which can be used for the determination of the content of hydrogen sulfide in the main stream smoke of cigarette.