Capturing tobacco specific N-nitrosamines (TSNA) in industrial tobacco extract solution by ZnO modified activated carbon
Capturing tobacco specific N-nitrosamines (TSNA) in industrial tobacco extract solution by ZnO modified activated carbon
复制标题
用 ZnO 改性活性炭捕获工业烟草提取物溶液中烟草特有的 N-亚硝胺 (TSNA)
DOI：
10.1016/j.micromeso.2015.10.001
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发表时间：
2016-03
期刊：
影响因子：
--
通讯作者：
J.H. Zhu
中科院分区：
文献类型：
--
作者：
W.M. Wang;Y.G. Tong;Y. Wang;J.H. Zhu
研究了氧化锌改性活性炭对烟草工业提取液中烟草特有亚硝胺（TSNA）的液相吸附。采用湿法浸渍法在活性炭表面包覆ZnO，通过X射线衍射（XRD）、X射线光电子能谱（XPS）和氮气吸附-脱附等手段对ZnO进行表征，评价其对活性炭结构的改性作用。除普通烟草提取液外，还采用TSNA含量和粘度较高的工业提取液，采用LC-MS/MS技术对ZnO改性活性炭的性能进行了评价。系统研究了TSNA浓度、固液比、吸附时间和循环次数对吸附效果的影响。为了探讨氧化锌改性活性炭是否会产生选择性吸附位点，对活性炭上TSNA的洗脱和对烟草提取液中主要中性致香成分的吸附进行了研究。ZnO/AC吸附剂对4-甲基亚硝胺基-1-3-吡啶基-1-丁酮（NNK）具有一定的选择性。
Adsorption of tobacco specificN-nitrosamines (TSNA) in industrial tobacco extract solution by ZnO modified activated carbon (AC) was deeply studied in order to discern the liquid adsorption. ZnO was coated on AC by wet impregnation and characterized with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and nitrogen-adsorption–desorption to evaluate its modification on the structure of sorbent. Apart from common tobacco extract solution, the industrial extract solution with a higher TSNA content and viscosity was used to assess the performance of ZnO modified AC with monitoring of LC–MS/MS technique. The influence of TSNA concentration, S/L ratio, adsorption time and recycle index was also systemically studied. To explore whether ZnO modification induces some selective adsorptive sites on AC, elution of TSNA from sorbent and the adsorption of main neutral aroma components in tobacco extract solution were performed. About 80% of TSNA could be trapped in the solution and the ZnO/AC sorbent showed a kind of selectivity for 4-methylnitrosamino-1-3-pyridyl-1-butanone (NNK).
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影响因子：
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影响因子：
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