• Journal of the Korean Society of Tobacco Science
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• v.11 no.1
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• pp.93-102
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• 1989

The optimal condition was investigated to make for good quality of Burley tobacco during the toasting. A complete factorial design (3$\times$3) and rotatable central composite design were used in this study. Based on the results obtained, it would be possible that 1) methyl-pyrazine other than pyrazine compounds is assumed to play an important role in the improvement of smoke taste. 2) filling value of Burley 21 leaf can be increased by 5~10 % 3) fragility index can be increased by about 5%. 4) total volatile base can also be reduced by about 10% and 5) the aroma and favorable taste of the Burley tobacco can be Improved by toe optimization the amount of sugar added and the toasting time and temperature.

• Journal of the Korean Society of Tobacco Science
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• v.18 no.1
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• pp.85-91
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• 1996

Commercially available activated carbon was treated with 0.2N NaOH/0.1N HCl to decrease the ash contents and to analyze the effect of demineralization. We have studied their properties and adsorptivity to solvents such as benzene, acetone, toluene and carbon tetrachloride, ammonia and also aldehydes of cigarette smoke. By demineralization with NaOH/HCl, surface area and pore volume were increased up to 10 - 20% according to developement of micro-pore and pH of activated carbon was also changed from 10.2 to 6.3. Surface acidity of the activated carbon treated with chemicals increased slightly. The chemical treatment led to small increase in adsorptioil properties of solvents, ammonia and aldehydes of cigarette smoke, but content of chlorine and sulfur in activated carbon were reduced. As the results of smoking test, charcoal taste caused by the activated carbon was reduced significantly by the treatment with NaOH/HCl.

• Journal of the Korean Society of Tobacco Science
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• v.30 no.1
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• pp.25-32
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• 2008

In this study, we compared three different pretreatment methods, such as block digestion, microwave digestion and solvent injection, coupled with Octopole Reaction System(ORS)-ICP-MS was used for the quantification of heavy metals in mainstream smoke of 2R4F reference cigarette, and then evaluated those efficiencies in the recovery, repeatability and reproducibility. In all methods, volatile heavy metals, As, showed the highest CV value, and Cd showed the lowest one. However, the solvent injection method showed the most stable recovery rate and CV value of 2.36 %. This method showed also advantages in time-consuming and compatibility with ICP-MS system. This results demonstrate that solvent injection method can be recommended as a superior pretreatment procedure to be able to reduce contaminants and spectral interference as well as loss of the elements interested.

• Journal of the Korean Society of Tobacco Science
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• v.16 no.2
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• pp.191-197
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• 1994

Relationships between surface structure and adsorption properties of smoke components were investigated in surface-modified and un-modified activated carbon filter cigarettes. Commercially available activated carbon was treated with nitric acid and hydrogen peroxide as oxidant, and their pore volume, surface structure, BET surface area, pore type and size were studied. BET surface area and pore volume were decreased by nitric acid treatment, but median pore diameter was 8.1 $\AA$, which showed better development of pore compared with that of un-modified activated carbon, 6.9 $\AA$. In case of hydrogen peroxide treatment, BET surface area and pore volume were increased. Their pore was found to be a slit type based on V-t plot analysis. Neutralization capacities for bases of different strength (NaHCO3, Na2CO3, NaOEt and NaOH) showed that the majority of the acidic surface groups are of weak acidity. Modification of the activated carbon surface led to a slight change in adsorption properties when analyzing the smoke of triple-filter cigarette with surface-modified activated carbon.

• Journal of Environmental Health Sciences
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• v.29 no.3
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• pp.43-49
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• 2003

ETS concentrations in the PC game rooms and factors affecting ETS concentrations were measured. Nicotine, 3-EP, respirable dust and UVPM were used as tracers for ETS. ETS concentrations are 2-3 times higher than those of other results. The concentration of ETS at the commercial district was higher than that of the residential district. The correlations between these tracers and SD/ ACH, a factor affecting to ETS concentration, were calculated. The correlation between 3-ethenylpyridine among tracers and SD/ACH was highest. The correlation between respirable dust and SD/ ACH was lowest. It was difficult to recommend respirable dust as a tracer of ETS.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.43-44
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• 2000

흡연 당사자의 직접흡연이 이와 관련한 발병률과 사망률의 주요 원인이 되어 왔다는 것은 여러 연구조사자료에 보고되어 왔다. 그러나 최근 들어 담배연기에 대한 비흡연자의 비자의적인 노출 즉, 환경담배연기(Environmental Tobacco Smoke, 이하 ETS)로 인한 보건학적 위해성에 대한 논란이 제기되면서 간접흡연은 새로운 사회문제로 대두되고 있다(Surgeon General, 1986). 1986년에 미국 National Research Council은 미국 내에서 연간 3000명에 달하는 폐암의 발생이 ETS에 대한 노출에서 기인한다고 발표한 바 있으며(NRC, 1986), 이를 근거로 1990년대 초에 미국 EPA와 NIOSH에서는 세계최초로 ETS를 인체발암성물질로 규정한 바 있다(NIOSH, 1991; USEPA, 1992). (중략)

• Journal of the Korean Society of Tobacco Science
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• v.11 no.2
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• pp.225-232
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• 1989

Deoxyschizandrin, gomisin N, schizandrin, wuweizisu C, gomisin A and angeloylgomisin H were isolated from fruits of Schisandra chinensis BAILLON, and the lignan contents in shred and smoke of 'Balloon-Flower' cigarettes were quantitatively analyzed by capillary-GC(FID). The GC column was SPB-1 fused silica capillay (0.25mm id$\times$30m, Supelco) and the column oven temperature was programmed from 20$0^{\circ}C$ to 30$0^{\circ}C$ at the rate of 4$^{\circ}C$/min. In the shred of 'Balloon-Flower' cigarettes deoxyschizandrin. gomisin N, schizandrin, gomisin A and angeloylgomisin H were detected and schizandrein contets were the highest among them, 22.77$\mu\textrm{g}$/cig., gomisin N, schizandrin and gomisin A were 0.023, 0.054, 0.0849 and 0.167$\mu\textrm{g}$/cig. respectively, and angeloylgomisin H was not detected.

• Tuberculosis and Respiratory Diseases
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• v.76 no.4
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• pp.188-191
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• 2014

Acute eosinophilic pneumonia (AEP) is a disease characterized by an acute febrile onset, eosinophilia in bronchoalveolar lavage fluid, and a dramatic response to corticosteroids. Although many studies have reported a close relationship between direct cigarette smoking and AEP, few studies have identified an association between passive smoking and AEP. Here, we report a case of AEP in a 19-year-old female with cough, fever, and dyspnea after 4 weeks of intense exposure to secondhand smoke for 6 to 8 hours a day in an enclosed area.

• Journal of the Korean Society of Tobacco Science
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• v.26 no.2 s.52
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• pp.168-178
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• 2004

Uncertainty of final measurement results considering main uncertainty sources being in nicotine of mainstream smoke was estimated. This study was accomplished by using the ISO 'The Guide to the Expression of Uncertainty in Measurement'. Using the two point re-calibration method, uncertainty for nicotine concentration was calculated considering the uncertainty sources of each step. The concentration and uncertainty of nicotine in mainstream smoke was estimated as $153.95{\pm}17.84\;{\mu}g/mL\;(0.77\pm0.089 mg/cig)$. The expanded uncertainty was $17.84 {\mu}g/mL(\pm0.089 mg/cig).$ The reported expanded uncertainty of the measurement is stated as the standard uncertainty of measurement multiplied by a coverage factor of 2, which for a normal distribution corresponds to a coverage probability of approximately $95\%$ The former expression indicates the conversion concentration into the sample.

• Journal of the Korean Society of Tobacco Science
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• v.10 no.1
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• pp.75-82
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• 1988

Cigarettes were made using a triple filter with several porous materials in its cavity. The removal effect of the adsorbents on carbon monoxide and hydrogen cyanide in cigarette smoke was investigated with the variation of their surface area and pore volume distributions. Several attempts were made to activated coconut shell based char under the fixed steam purging rate. 1. The specific surface area increased in number of micropore. It was found for transitional pore to have a little effect on the total surface area. 2. A Small amount of the particulate matter adsorbed on the adsorbents with transitional pores, Zeolite showed a little effect on the carbon monoxide adsorption though its small pore volume, but there was no significant difference in the adsorption capacity zeolite and the others. 3. In the adsorption for hydrogen cyanide as a vapor phase in cigarette smoke, the adsorption effect of the adsorbents increased remarkably with increasing their surface area and number of micropore. It was considered that the adsorbents with small pore volume like molecular seive 4A, in which the capillary diffusion of adsorbates could not be able, would not be effective for the adsorption of hydrogen cyanide.