Determination of Nicotine in Cigarette Tobacco Smuggled to Brazil by Modified QuEChERS Methodology

IF 0.7 Q4 CHEMISTRY, MULTIDISCIPLINARY
C. E. Domingues, Januário Kordiak, Carlos R. Pedroso, T. Stremel, Rosimara Zittel, Patrícia Los Weinert, Carlos M. de Sousa Vidal, S. X. de Campos
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引用次数: 0

Abstract

The study of cigarette authenticity in Brazil is important due to increasing consumption of contraband cigarettes. Nicotine concentration is an important parameter reflecting the quality of tobacco used in the production of these cigarettes. Simple methods for this determination, which produce reduced waste, are environmentally and industrially important. The nicotine concentration of smuggled cigarette tobacco was determined by the QuEChERS method, requiring some modifications, such as decreasing the volume of the extractor solvent, changes in pH, and removal of the sample hydration step. Quantification was performed by gas chromatography using a flame ionization detector. The Doehlert matrix design was used to optimize the method. The extraction recoveries ranged from 97.5% to 99.6%, with relative standard deviation (RSD) ≤ 2.5% and limits of detection and quantification of 0.6 mg L-1 and 2.5 mg L-1, respectively. The method was sensitive and accurate for the detection and quantification of nicotine. The nicotine concentration in contraband cigarettes was found to be lower than that observed in legal cigarettes. The method was successfully applied to real samples of smuggled and legal cigarettes, providing a robust method for routine analysis and proving the need for more studies on quality control of smuggled cigarettes in Brazil.
改良QuEChERS法测定走私巴西卷烟中的尼古丁
由于违禁香烟的消费量不断增加,对巴西香烟真实性的研究非常重要。尼古丁浓度是反映这些香烟生产中使用的烟草质量的一个重要参数。这种测定的简单方法可以减少废物,在环境和工业上都很重要。通过QuEChERS方法测定走私卷烟烟草的尼古丁浓度,需要进行一些修改,如减少提取溶剂的体积、改变pH值和去除样品水合步骤。使用火焰离子化检测器通过气相色谱法进行定量。采用Doehlert矩阵设计对该方法进行了优化。提取回收率在97.5%-99.6%之间,相对标准偏差(RSD)≤2.5%,检测和定量限分别为0.6 mg L-1和2.5 mg L-1。该方法灵敏、准确,可用于尼古丁的检测和定量。违禁香烟中的尼古丁浓度被发现低于合法香烟中的浓度。该方法已成功应用于走私香烟和合法香烟的真实样本,为常规分析提供了一种强有力的方法,并证明需要对巴西走私香烟的质量控制进行更多研究。
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来源期刊
Orbital: The Electronic Journal of Chemistry
Orbital: The Electronic Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.10
自引率
0.00%
发文量
25
审稿时长
10 weeks
期刊介绍: Orbital: The Electronic Journal of Chemistry is a quarterly scientific journal published by the Institute of Chemistry of the Universidade Federal de Mato Grosso do Sul, Brazil. Original contributions (in English) are welcome, which focus on all areas of Chemistry and their interfaces with Pharmacy, Biology, and Physics. Neither authors nor readers have to pay fees. The journal has an editorial team of scientists drawn from regions throughout Brazil and world, ensuring high standards for the texts published. The following categories are available for contributions: 1. Full papers 2. Reviews 3. Papers on Education 4. History of Chemistry 5. Short communications 6. Technical notes 7. Letters to the Editor The Orbital journal also publishes a number of special issues in addition to the regular ones. The central objectives of Orbital are threefold: (i) to provide the general scientific community (at regional, Brazilian, and worldwide levels) with a formal channel for the communication and dissemination of the Chemistry-related literature output by publishing original papers based on solid research and by reporting contributions which further knowledge in the field; (ii) to provide the community with open, free access to the full content of the journal, and (iii) to constitute a valuable channel for the dissemination of Chemistry-related investigations.
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