Studies on Reduction of Harmful Compound and Combustibility of $Na_3$ Citrate-treated Cigarette

시트르산나트륨첨가(添加)에 의(依)한 담배의 연소성(燃燒性) 및 유해물감소(有害物減少)에 관한 연구(硏究)

  • Kim, Ki-Hwan (Dept. of Smoke Hygienics, Central Research Institute) ;
  • Bae, Hyo-Won (Dept. of Smoke Hygienics, Central Research Institute) ;
  • Lee, Yong-Chong (Dept. of Smoke Hygienics, Central Research Institute) ;
  • Kim, Man-Uk (Dept. of Smoke Hygienics, Central Research Institute) ;
  • Park, Taek-Kyu (Dept. of Chemistry Kon-Kuk University)
  • Published : 1977.03.31

Abstract

Development of new burning additives against nitrate salts used in past tobacco industry examined to reduce harmful nitrogenous compounds in smoke. Among several additives treated, the best effect by means of elevation of combustibility and reduction of tar and nicotin contents in smoke was observed by adding sodium citrate from 0.6 to 1% in tabacco. The following results were obtained through investigating combustibility, chemical composition, and differential thermal analysis of the tabacco treated with the buring additives. 1) The close relation was observed between the levels of the smoke components and combustibility of the treated tabacco. 2) Differential thermal analysis (D.T.A.) of citrate-treated tobacco shows an increase in H. Value and a decrease in L. Value as compared with other tobacco sample. 3) The D.T.A. of sodium-nitrate and sodium-citrate shows that sodium-nitrate gives endothermal reaction at $270^{\circ}$ and $310^{\circ}$ and sodium citrate gives exothermal reaction at $290^{\circ}$ with endothermal reaction at $170^{\circ}\;and\;310^{\circ}$. 4) $Na_3-citrate-treated$ tobacco shows an increase in smoke generation between room temperature and $350^{\circ}$ (Zone A) and a decrease in smoke generation between $350^{\circ}$ and $900^{\circ}$ (Zone B) compared with untreated tobacco. The smoke from these tobacco also contains lower levels of Tar, Nicotine, Phenols, Nitrogen oxides and Benzpyrene, and elevation of static Burning rate.

담배에 질산염을 청가하면 질소화합물이 증가되므로 질산염의 대체물(代替物)을 개발(開發)하기위한 실험을 한 결과 다음과 같은 결론을 얻었다. 여러가지 첨가제 중에서 $0.6{\sim}1%$의 시트르산나트륨을 첨가하는 것이 연소성 및 Tar, Nicotine의 감소효과(減少效果)가 가장 양호했다. 특히 조연제첨가(助燃濟添加)에 따른 연소성(燃燒性)과 유해성분감소효과(有害成分減少效果) 및 열특성(熱特性)에 대(對)한 다음과 같은 결과를 얻었다. 1) 연소성이 좋으면 Tar, Nicotine, Bonzpyrene Phenols, NO, $NO_2E, 등의 유해성분이 감소됐다. 2) 단엽에 첨가(添加)된 질산염과 시트르산염의 시차열분석효과(示差熱分析效果)는 시트르산염 첨가시(時) L치(値)가 가장 적고 H치(値)가 가장 컸다. 3) 순수한 질산염과 시트르산염의 시차열분석(示差熱分析)에서 전자는 발열반응(發熱反應)이 없는데 후자는 발열반응(發熱反應)이 있었다. 4) $0.6{\sim}1%$의 시트르산나트륨 첨가시(時)에 Zone A에서는 Tar생성량이 많았고 Zone B에서는 Tar 생성량이 가장 적었다. 또한 이들 담배의 연기에서는 Tar, Nicotine, Phenols, Nitrogen oxides, Benzpyrene의 함량(含量)이 적었으며 연소성이 향상되었다.

Keywords