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流动注射化学发光法检测卷烟主流烟气中的氮氧化物 预览 被引量:3

Determination of Nitrogen Oxides in Mainstream Cigarette Smoke by Flow Injection Chemiluminescence Analysis
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摘要 [目的]探讨一种流动注射化学发光法间接测定卷烟主流烟气中氮氧化物(NOx)的方法。[方法]将NOx用氢氧化钠(NaOH)溶液吸收定量生成亚硝酸根(NO2-),在酸性条件下与过氧化氢(H2O2)反应,其产物与鲁米诺发生很强的化学发光反应,用流动注射化学发光分析仪根据化学发光强度测定卷烟主流烟气中的NO。含量。[结果]建立了一种新的卷烟主流烟气中的NOx鲁米诺一过氧化氢化学发光分析体系:H2O2浓度1.0×10^-3g/ml,硫酸浓度0.01mol/L,氢氧化钠浓度0.10mol/L溶液配制发光液,鲁米诺浓度为1.0×10^-3mol/L。方法的检出限为1.2×10^-5g/L,相对标准偏差〈3.00%。样品分析结果表明,烤烟型卷烟NOx含量普遍较混合型低,与烤烟型卷烟舍亚硝酸盐较低的规律比较吻合。[结论]流动注射化学发光法适用于卷烟主流烟气中的NOx的定量分析。 [ Objective ] The technique of the indirect measurement of the nitrogen oxides (NOx) in the mainstream of cigarette smoking with the method of flow injection chemiluminescence was investigated. [Method] Firstly, the NOx was reacted with NaOH for the quantitative for- mation nitrite( NO2- ), which was reacted with hydrogen peroxide( H2O2 ) in acidic condition and then the product from the reaction could act with Luminol to generate strong chemiluminescence signal. Finally, the content of the NOx in the mainstream of cigarette smoking could be cal- culated according to the intensity tested with the method of flow injection chemiluminescence. [ Results] The chemiluminescence analysis sys- tem of the Luminol-H2O2 in the measurement of the NOx in the mainstream of cigarette smoking would be established, and the technical index was the concentration of H2O2 was 1.0 × 10^-3g,/ml, sulfuric acid was 0.01 mol/L, the Luminol was 1.0×10^-3 mol/L and NaOH with the concentration of 0.10 mol/L was prepared as light-generating solution, under which technical condition, the detection limit was 1.2×10^-5g/L (3o) ,the relative standard deviation was less than 3.00%. The analysis result indicated that the content of NOx in flue-cured tobacco was lower than that in the mixed tobacco in general, which was matched with low content of nitrite in its cigarette. [ Conclusion] This method was suitable for the quantitative analysis of NOx in the mainstream of cizarette smoking.
作者 吕健 王小燕 崔俊安 王晓婷 管延渠 周仕禄 张峻松 LV Jian et al ( Center of Technology, Shandong Branch of China Tobacco Industrial Corporation Limited, Qingdao, Shandong 266101 )
出处 《安徽农业科学》 CAS 北大核心 2011年第17期 10717-10719,共3页 Journal of Anhui Agricultural Sciences
关键词 流动注射化学发光法 卷烟主流烟气 氮氧化物 Flow injection chemiluminescence analysis Mainstream of cigarette smoking Nitrogen oxides
作者简介 吕健(1975-),男,山东青岛人,工程师,从事烟草及烟气相关测试技术研究。通讯作者,教授,博士,硕士生导师,从事烟草化学和香精香料研究。
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