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Hu L.,China Tobacco Hebei Industrial Co. | Zhang Y.,China Tobacco Hebei Industrial Co.
Tobacco Science and Technology | Year: 2014

A high performance liquid chromatography-UV detector (HPLC-UV) method was established for simultaneously determining six colorants (lemon yellow, allure red, basic orange, erythrosine, alkaline yellow O and curcumin) in wrapping materials of cigarettes. The samples were extracted with the mixed solution of methanol, 10% ammonia and water (1∶1∶8, V/V) under oscillation. After being filtered with 0.45 μm membrane, the extract was separated by Zorbax SB-C18 column (250 mm× 4.6 mm, 5 μm) with 0.02 mol/L ammonium acetate and acetonitrile as the mobile phases of gradient elution and using UV multi-wavelength for detection. The results showed that: 1) The six analytes were well separated within 25 minutes, with good linear relations in the range of 0.1-5.0 μg/mL (R2=0.9965-0.9999). The limits of detection were from 0.28 to 0.86 mg/kg, and the recoveries ranged from 78.1% to 102.5% with the relative standard deviations below 8%. 2) For all of the ten tested samples, including carton blanks and tipping paper, the amounts of the six colorants were below the allowed maximum limit in food. This method is simple, accurate, of good reproducibility and suitable for determining the residues of the six colorants in cigarette wrapping material.


Qin C.,Hebei Baisha Tobacco Co. | Zhang X.,China Tobacco Hebei Industrial Co. | Li L.,Industrial Research Ltd. | Liu W.,China Tobacco Hebei Industrial Co. | Zheng S.,China Tobacco Hebei Industrial Co.
Tobacco Science and Technology | Year: 2015

An analytical method for simultaneous determination of four heavy metals, namely chromium (Cr), nickel (Ni), arsenic (As) and lead (Pb) in hot-melt adhesives for cigarette was developed by using inductively coupled plasma mass spectrometry (ICP-MS) with microwave digestion. The method was applied to quantify the four heavy metals in eight hot-melt adhesives. The linear correlation coefficients were between 0.999 and 1.000. The relative standard deviations of measurement were between 2.04% and 4.51%. The recoveries for spiking hot-melt adhesive samples were between 95.2% and 118.1%. The detection and quantitation limits of the method were in the range of 0.012-0.093 μg/L and 0.039-0.309 μg/L, respectively. The uncertainty measurement for the method was evaluated. The calibration curve fitting was the most important factor affecting the combined uncertainty, followed by the standard solution preparation and the repeatability, and with the sample preparation process had the least impact. The levels of the four heavy metals in the hot-melt adhesives were in the order of Cr> Ni> Pb> As. Notable differences in Ni and Pb levels were found with variation coefficients of 86.6% and 81.8%, respectively. The developed method is accurate, simple, rapid, reliable, and suitable for the simultaneous determination of the four heavy metals in hot-melt adhesives for cigarette. © 2015, Editorial Office of Tobacco Science and Technology. All right reserved.


Liu Y.,China Tobacco Hebei Industrial Co. | Jin S.,China Tobacco Hebei Industrial Co. | Zhang Z.,China Tobacco Hebei Industrial Co. | Liang F.,China Tobacco Hebei Industrial Co.
Tobacco Science and Technology | Year: 2014

To avoid cut tobacco escaping into centralized dusting system from rod forming section in ZJ17 cigarette maker and reduce tobacco consumption, an on-line tobacco recycling system was designed by referring to the working principle of tangential separator in threshing machine. The system adopted two-stage pneumatic separation: the first stage was a cyclone separator to separate the suspended matter from dusting airflow, the second stage to separate cut tobacco from tobacco dust. The separated cut tobacco was on-line reclaimed and returned to the feeding system of cigarette maker. The results of application showed that the cigarette weight, draw resistance and amount of tobacco loss from cigarette ends of three tested cigarette brands were all up to the technical standards, the average tobacco recovery was 9.34 kg/shift, the recovery rate reached 81.4%.


Liu B.,China Tobacco Hebei Industrial Co. | Bao F.,China Tobacco Hebei Industrial Co. | Pan W.,China Tobacco Hebei Industrial Co. | Tan H.,China Tobacco Hebei Industrial Co.
Tobacco Science and Technology | Year: 2014

Essential oils extracted from orange peel by supercritical CO2 extraction and steam distillation were determined by GC/MS and applied as cigarette flavoring separately. The results showed that: 1) The yield of essential oil from supercritical CO2 extraction was 0.67%, and 76 aroma components, including D-limonene (91.88%), γ-terpinene (2.23%), β-myrcene (1.59%), and α-pinene (0.89%), were detected in the oil. 2) The yield of essential oil extracted by steam distillation was 0.29%, and 27 aroma components, including D-limonene (84.05%), D-limonene oxide (2.23%), β-myrcene (0.88%), α-pinene (0.85%), were identified in the oil. 3) The oil from supercritical CO2 extraction was better than that from steam distillation in improving aroma abundance and aroma quality of cigarette.


Ren Z.,China Tobacco Hebei Industrial Co. | Tan H.,China Tobacco Hebei Industrial Co. | Pan W.,China Tobacco Hebei Industrial Co. | Liu B.,China Tobacco Hebei Industrial Co. | Cheng Q.,China Tobacco Hebei Industrial Co.
Tobacco Science and Technology | Year: 2013

In order to effectively evaluate cigarette quality and its consistence, the physical indexes and mainstream smoke indexes of cigarette samples A, B1 and B2 were analyzed with Principal Component Analysis (PCA), and their principal components were determined. According to characteristic matrix, the principal component score diagrams of cigarette samples were established, and cluster analyses were conducted. By using principal component load graphs, the importance of cigarette physical indexes and mainstream smoke indexes and their correlations were analyzed respectively. The results showed that: 1) The samples of different cigarette brands, A and B1, could be distinguished by cluster analysis, which indicated that they possessed different principal components. While the samples of the same brand but from different batches, B1 and B2 were not differentiable, which indicated that the cigarette brand B was in good quality consistence. 2) The load vector angle of 0.86 degrees between puff number of cigarette and CO in mainstream smoke suggested that there existed stronger correlation between the two. The load vectors of puff number with moisture content in mainstream smoke and that of draw resistance with nicotine in mainstream smoke were in an orthogonal state, it indicated their weak correlations. The load vector angle was 148.09 degrees between draw resistance of cigarette and moisture content in mainstream smoke, it indicated a certain negative correlation between them. The correlation analysis between each index could provide reference and theoretical basis for the product design and quality control of cigarette.

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