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使用DI-SPME-GC-MS在巴西消费的电子液体中的尼古丁的化学表征和量化

Ivana Ferreira Simões¹, Eduard F Valenzuela¹, Laura Beatriz Souza E Souza¹

¹Universidade do Estado da Bahia (UNEB), Departamento de Ciências da Vida (DCV), Rua Silveira Martins, 2555 - Cabula, 41150-000, Salvador, BA, Brazil.

|December 31, 2025

概括

巴西的电子液体含有有毒和未申报的物质,尼古丁标签不准确. 这突显了风险和需要对这些流行的vaping产品进行监管监督.

科学领域:

分析化学分析化学
环境健康环境健康
毒理学毒理学毒理学

背景情况:

电子烟 (e-cigarettes) 和它们的补充液体 (e-liquids) 在全球和巴西越来越受欢迎.
巴西存在监管限制,但缺乏质量控制,引发了人们对电子液体中有害或未申报物质的担忧.

研究的目的:

对在巴西销售的电子液体进行目标和非目标分析.
识别和量化有害物质,评估尼古丁含量准确性,并检测新出现的污染物.

主要方法:

使用直接浸泡固体相微提取与气色谱质谱学 (DI-SPME-GC-MS) 结合使用.
目标分析侧重于尼古丁量化,而非目标分析确定了挥发性和半挥发性有机化合物.

主要成果:

确定了大约673种化合物,包括诸如甲,芬和烯等有毒物质.
检测到新出现的污染物,如多环芳 (PAH) 和酸盐.
尼古丁度差异很大,标签和实际数量之间存在差异,甚至"无尼古丁"样本中也含有尼古丁.

结论:

在巴西销售的电子液体含有危险化合物,并表现出标签上的重大不准确性.
未申报和有毒物质的存在对消费者构成潜在的健康风险.
对于巴西的电子液体,迫切需要进行监管监督和毒理评估.

关键词:

在DI-SPME-GC-MS中使用.电子烟是电子烟的产品.电子液体的使用情况尼古丁是一种尼古丁.值得注意的是,SVOCs是SVOCs.挥发性有机化合物挥发性有机化合物

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相关概念视频

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....