摘要[目的]降低混合型造紙法再造煙葉中TSNAs的釋放量。[方法]研究分析不同吸附材料對(duì)煙草萃取液及再造煙葉卷煙煙氣中TSNAs的吸附效果。[結(jié)果]在煙草萃取液中，活性炭對(duì)TSNAs的吸附作用優(yōu)于分子篩，活性炭S35對(duì)TSNAs的去除率為84.84%，MCM41對(duì)TSNAs的去除率為48.92%，ZSM5對(duì)TNSAs的去除率最差，僅為6.67%，但其對(duì)TSNAs中的NNK具有選擇性吸附作用，去除率高達(dá)91.60%。通過進(jìn)一步對(duì)再造煙葉卷煙煙氣進(jìn)行試驗(yàn)驗(yàn)證上述結(jié)果，活性炭S35對(duì)卷煙煙氣中TSNAs的去除率為70.20%，MCM41對(duì)TSNAs的去除率為46.74%，ZSM5對(duì)TSNAs的去除率僅為5.57%，ZSM5對(duì)煙氣TSNAs中的NNK沒有明顯的選擇吸附作用，去除率為15.64%。[結(jié)論]在煙草萃取液中添加吸附材料的方式來降低混合型再造煙葉中TSNAs含量，是一種簡(jiǎn)易、高效的去除卷煙中TSNAs的方法。
　　關(guān)鍵詞 煙草特有N亞硝胺；造紙法再造煙葉；吸附材料；卷煙煙氣
　　中圖分類號(hào) S572 文獻(xiàn)標(biāo)識(shí)碼 A 文章編號(hào) 0517-6611（2016）05-103-04
　　Abstract[Objective]The aim was to reduce TSNAs emissions in mixed papermaking process reconstituted tobacco.
　　[Method]Different adsorbent materials were applied to tobacco extract solution and reconstituted tobacco for removing TSNAs.[Result]The results showed that the adsorption performance of modified activated carbon was more excellent than molecular sieves in tobacco extract solution. Especially modified activated carbon S35 showed the best adsorption performance. The removal rate of TSNAs in tobacco extract solution was 84.84%. The adsorption performance of MCM41 was greater than ZSM5， and the removal rate were 48.92% and 6.67% in tobacco extract solution. Meanwhile， ZSM5 had excellent selective absorption on NNK in tobacco extract solution， and the removal rate was up to 91.60%. The amount of TSNAs in tobacco smoke was detected in the same time. Modified activated carbon S35 had the best adsorption performance， the removing rate of TSNAs in tobacco smoke was 70.20%. MCM41 showed more efficient adsorption performance than ZSM5. The removing rate were 46.74% and 5.57%， respectively. However， the removal rate of NNK in tobacco smoke was only 15.64% by ZSM5.[Conclusion]It’s a simple， efficient method to reduce the TSNAs in papermaking process reconstituted tobacco by adding adsorbents in tobacco extract solution.
　　Key words Tobacco specific nitrosamines（TSNAs）； Papermaking process reconstituted tobacco； Adsorbent materials； Tobacco smoke
　　煙草中含有2 000多種化學(xué)物質(zhì)，當(dāng)煙支燃燒時(shí)所產(chǎn)生的煙氣中的粒相和氣相中存在5 200多種化合物。在這些物質(zhì)中，煙草特有的N亞硝胺（TSNAs），主要包括N′亞硝基降煙堿（NNN）、N′亞硝基新煙堿（NAT）、N′亞硝基假木賊堿（NAB）和4（N甲基亞硝胺基）1（3吡啶基）1丁酮（NNK）被認(rèn)為是主要的致癌物質(zhì)。動(dòng)物試驗(yàn)已經(jīng)證實(shí)，即使是痕量的亞硝胺，也會(huì)導(dǎo)致多種癌癥或腫瘤，對(duì)人類有潛在的致癌作用[1-2]。因此，研究降低煙草中的亞硝胺含量的方法具有重要的意義。
　　目前為止，對(duì)卷煙中TSNAs的降低方法主要從2個(gè)方面考慮。第一，直接降低煙支中的TSNAs。Zhou等通過卷煙濾嘴攔截方法去除了主流煙氣中約30%的TSNAs[3]；Meier和Lin等在煙支中加入催化劑，催化劑在卷煙燃燒過程中催化降解TSNAs，該方法可以去除主流煙氣中40%～70%的TSNAs[4-5]，該方法的不足之處在于這些被添加的催化劑價(jià)格昂貴并且無法重復(fù)利用，不僅增加了卷煙生產(chǎn)成本，而且還浪費(fèi)稀有資源，污染環(huán)境。第二，降低煙草原料中的TSNAs。其中一種方法是通過農(nóng)業(yè)種植和陳化過程的控制來降低煙草中的TSNAs[6]；另一種則是通過液相吸附來降低煙草中TSNAs，而這種方法主要在造紙法再造煙葉的生產(chǎn)中應(yīng)用[7]。Wei Feng等研究了介孔二氧化硅材料對(duì)白肋煙萃取液中TSNAs的吸附，探究了影響吸附劑吸附性能的因素[8]。Lin Weigang等利用多孔材料吸附中國烤煙煙葉萃取液中的TSNAs，結(jié)果發(fā)現(xiàn)，不管多孔材料的孔結(jié)構(gòu)是否有序、是否進(jìn)行改性都能對(duì)TSNAs產(chǎn)生不同程度的吸附作用[9]。但是，這些研究只是針對(duì)單一性的煙草原料提取液，而且其提取過程及條件較為繁瑣。

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