Study on B[a]P and phenol from mainstream smoke by chitosan dissolved in acid solution
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摘要: 为寻找更好的选择性降焦减害手段,本文将卷烟滤嘴浸入壳聚糖酸溶液中,考察其对有害物质的去除效果。首先考察了四种有机酸对壳聚糖的溶解能力,然后结合酸对卷烟吃味的影响,选择乳酸作为溶解酸,考察壳聚糖脱乙酰度、添加量及酸浓度的变化对主流烟气中苯酚和苯并[a]芘的去除效果。结果表明:实验考察范围内,酸种类、壳聚糖脱乙酰度、壳聚糖添加量以及乳酸对苯并[a]芘和苯酚的释放均有明显影响。Abstract: In order to find methods to selectively reduce tar and harm in cigarette, chitoson dissolved in organic acid solution was added into filter, and the removal of B [a] P and phenol in mainstream smoke were investigated.Firstly, chitoson solubility in four organic acid solutions was explored.According to the solubility laws and effect of acid on the smoke flavor, lactic acid solution was chosen.Then the influences of chitoson adding content, deacetylation degree ( D.D.) and acid concentration on B[a]P and phenol removal were discussed.The results showed that, in the range of the experiments, acid type, concentration of lactic acid, and deacetylation degree and adding content of chitoson all had evident influences on removal efficiency of B[a]P, phenol.
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Keywords:
- citric acid /
- chitoson /
- mainstream smoke /
- phenol /
- B[a]P
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