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首页> 外文期刊>Polycyclic Aromatic Compounds: The Journal of International Society for Polycyclic Aromatic Compounds >Determination of Polycyclic Aromatic Hydrocarbons in Water- and Gin-Based Tea Infusions of Selected Tea Brands in Nigeria
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Determination of Polycyclic Aromatic Hydrocarbons in Water- and Gin-Based Tea Infusions of Selected Tea Brands in Nigeria

机译：尼日利亚某些茶叶品牌的水基和金酒基茶浸液中多环芳烃的测定

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摘要

The concentrations of the 16 priority polycyclic aromatic hydrocarbons (PAHs) in tea infusions made of water and local gin (alcohol) were investigated with a view to providing information on the profiles and health hazards associated with these two common Nigerian methods for tea consumption. The water-based tea infusion was prepared by submerging 4g of tea in boiling water and allowing it to stand for 15min, while the gin-based infusion was simply prepared by submerging 4g of tea in gin at room temperature and allowing it to stand for 15min. The concentrations of the Sigma 16 PAHs in the infusions were measured by using gas chromatography equipped with a flame ionization detector (GC-FID) after ultrasound-assisted extraction and clean-up. The concentrations of the Sigma 16 PAHs ranged from 24.9-623.4g kg(-1) with a mean value of 177g kg(-1) and 36.8-438.3g kg(-1) with a mean of 189g kg(-1) for water- and local gin-based infusions, respectively. The concentration of the Sigma 16 PAHs in the water- and local gin-based infusions of these teas were high when compared with levels reported in the literature for tea infusions. The local gin-based infusions had a higher mean level of the Sigma 16 PAHs than the water-based infusions. Four- and five-ring PAH compounds were dominant in these tea infusions.
机译：调查了由水和当地杜松子酒（酒精）制成的茶浸液中16种优先多环芳香烃（PAHs）的浓度，目的是提供与这两种尼日利亚常用茶饮方法相关的概况和健康危害信息。通过将4g茶浸入沸水中并静置15min来制备水基茶浸液，而通过将4g茶浸在杜松子酒中于室温下静置15min来制备基于杜松子酒的浸液。在超声辅助提取和净化后，使用配备有火焰离子化检测器（GC-FID）的气相色谱仪测量输注液中Sigma 16 PAH的浓度。 Sigma 16 PAHs的浓度范围为24.9-623.4g kg（-1），平均值为177g kg（-1）和36.8-438.3g kg（-1），平均值为189g kg（-1）。分别基于水和基于杜松子酒的输液。当与茶浸液文献中报道的水平相比时，这些茶的水基和杜松子酒基浸液中的Sigma 16 PAHs浓度较高。与水基浸液相比，本地杜松子酒浸液的Sigma 16 PAHs平均水平更高。在这些茶中，四环和五环PAH化合物占主导地位。

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