China Tobacco Standardization Research Center

Zhengzhou, China

China Tobacco Standardization Research Center

Zhengzhou, China

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Yang K.,Chinese Academy of Sciences | Yang K.,Hefei University of Technology | Cui H.,Chinese Academy of Sciences | Li H.,Beijing Tobacco Quality Supervision and Testing Station | And 7 more authors.
Tobacco Science and Technology | Year: 2015

In order to accurately analyze the puff-by-puff release characteristics of CO in gas phase of mainstream cigarette smoke, an on-line puff-by-puff analysis system for cigarette smoke was established, which incorporated tunable diode laser absorption spectroscopy (TDLAS) technology with a modified single port smoking machine. The effects of cigarette smoke remained in pipeline and filter pad holder on the results of puff-by-puff analysis were analyzed with the system. The puff-by-puff release and transfer tendency of CO in mainstream smoke of cigarettes of four different types were analyzed. The results showed that: 1)The puff-by-puff transfer tendency of CO obviously differed before and after flushing the residual smoke from pipeline and filter pad holder. 2)Under the flushing mode, the puff-by-puff release of CO in mainstream smoke decreased at the first and second puffs then increased gradually with the minimum at the second puff. Comparing with traditional analysis methods, the modified single port smoking machine combined with TDLAS technology can complete the analysis of CO in cigarette smoke quickly and avoid the interference from other components in mainstream cigarette smoke effectively. © 2015, Editorial Office of Tobacco Science & Technology. All right reserved.


Yang R.,China Tobacco Standardization Research Center | Miao Q.,China Tobacco Standardization Research Center | Zhang Q.,China Tobacco Standardization Research Center | Zhao H.,China Tobacco Standardization Research Center | And 2 more authors.
Tobacco Science and Technology | Year: 2014

To verify the accuracy of correction formula for the measurements of air permeability standards in ISO 2965-2009, 18 air permeability standards were tested in an atmospheric pressure chamber at 22, 24°C and 86, 93, 99, 101, 106 kPa, respectively. The results showed that: 1) The measurement values of linear standards could be used directly without correction. 2) The measurement values of non-linear standards should be corrected to the standard conditions. The mentioned results were verified by the experiments of the effects of linear standards and non-linear standards on the measurements of air permeability of cigarette paper before and after correction.


Li Z.,China National Tobacco Quality Supervision and Test Center | Tang G.,China National Tobacco Quality Supervision and Test Center | Bian Z.,China National Tobacco Quality Supervision and Test Center | Feng Q.,Shanghai Tobacco Quality Supervision and Test Station | And 3 more authors.
Tobacco Science and Technology | Year: 2013

Reference material (RM) of nicotine purity was prepared. Six laboratories collaboratively confirmed quantitatively the purity of the prepared material by the method recommended by ISO 13276: 1997 "Tobacco and tobacco products-Determination of nicotine purity-Gravimetric method using tungstosilicic acid". The results showed that: 1) The purity of RM of nicotine was 98.5% with the expanded uncertainty of 0.6%. 2) The prepared RM featured good homogeneity test result and higher stability during investigating period, and satisfied the technical requirements of national second grade reference material.


Han Y.-H.,China Tobacco Standardization Research Center | Han L.,Gansu Tobacco Industrial Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012

With the voice rising for resource saving and environment protection, there is a general trend of using vacuum metallization inner liner to replace with the composite aluminum foil paper for cigarette packaging. In this paper, we briefly introduced the quality protection capability, environment protection performance and machine adaptability of the vacuum metallization inner liner, technology, characteristic and identification method of the direct metallization paper and the transfer paper.


Yang L.,Zhongyuan University of Technology | Fan X.,Zhongyuan University of Technology | Zhang Q.,China Tobacco Standardization Research Center | Zhao H.,China Tobacco Standardization Research Center | And 4 more authors.
Tobacco Science and Technology | Year: 2014

In order to assess the cleaning effects of new flocked filter fabrics on the recirculated air from air conditioning system in cigarette manufacturing department, two fabrics of different types were tested and their influencing factors were analyzed. The results showed that: 1) The filtration efficiency of pile fabric was influenced by air velocity more significantly with a standard deviation of filtration efficiency distribution of 21.4%. The filtration efficiency of nap fabric was less affected by air velocity fluctuation, and its highest standard deviation of filtration efficiency distribution was 5.2%. 2) Dust concentration did not affect the running resistance of the two filtration fabrics significantly. 3) The average dust retentivities of nap fabric and pile fabric were 359.2 and 707.1 g/m2, respectively. Though lower in dust retentivity, nap fabric was considered to be more applicable due to its advantages of lower filtration resistance and higher stabilities of filtration efficiency and filtration resistance when air velocity or dust concentration fluctuated. ©, 2014, Editorial Office of Tobacco Science and Technology. All right reserved.


Zhang Q.,China Tobacco Standardization Research Center | Yang R.,China Tobacco Standardization Research Center | Miao Q.,China Tobacco Standardization Research Center | Wu S.,China Jiliang University | Zhang K.,China Jiliang University
Thermal Science | Year: 2016

As a major physical parameter for the tobacco industry, the ventilation rate of cigarette should be measured reliably. Theoretical and numerical investigation on effects of ambient conditions (e. g., cumulative flux of ozone and additional pressure drop) on the ventilation rate was carried out. It was found that the standards exhibited a non-linear airflow component, which explains why additional pressure drop has an effect on the calibrated value, and had low sensitivity to cumulative flux of ozone.


Miao Q.,China Tobacco Standardization Research Center | Yang R.-C.,China Tobacco Standardization Research Center | Zhang Q.,China Tobacco Standardization Research Center | Cheng J.,China Jiliang University | And 4 more authors.
Thermal Science | Year: 2013

The volume flow rate measured by air flow plate is influenced by the ambient conditions during the calibration. A series of numerical examples are conducted for the relationship and the outcomes demonstrated that the calibration is quite sensitive to the atmospheric pressure and the ambient temperature, but insensitive to relative humidity. The experiment model has been applied to calibration results with wide ranging ambient conditions. In conclusion, the results of this study demonstrate the benefits to calibration data of minimizing the effects of ambient conditions.


Ye C.-W.,Huazhong Agricultural University | Ye C.-W.,China Tobacco Standardization Research Center | Zhang X.-N.,Huazhong Agricultural University | Gao Y.-L.,Huazhong Agricultural University | And 3 more authors.
Analytica Chimica Acta | Year: 2012

This study presents the potential of multiple headspace solid-phase microextraction (multiple HS-SPME) for the quantification of analytes in solid samples. Multiple HS-SPME shares the same advantages as SPME. It also enables a complete recovery of the target compound and therefore the matrix effect, which commonly appears in SPME-based analysis, is avoided. A method based on multiple HS-SPME for the determination of the toxic contaminant ethyl carbamate (EC) in bread samples has been developed and validated, using gas chromatography with flame ionization detector. A novel polyethylene glycol/hydroxy-terminated silicone oil fiber was prepared for the first time and subsequently used instead of commercial ones because of its high extraction ability and good operational stability. An important problem still remained in multiple HS-SPME of EC in fresh bread samples. The adsorption of EC by water in the samples caused low transport of analyte to the headspace, which made multiple HS-SPME invalidated. Mixing with anhydrous sodium sulphate, the sensitivity of the method was improved and the problem was solved. The proposed method showed satisfactory linearity (0.15-1500μgg -1), precision (1.6%, n=5) and limit of detection (0.041μgg -1). Good recoveries, from 92.5 to 103.4%, were observed at three spiking levels. The method was applied to 14 bread samples. The multiple HS-SPME technique offers several advantages including reducing the manipulation time and cost, and avoiding analyte losses, especially in the analysis of a large number of samples in different matrices. © 2011 Elsevier B.V.


Miao Q.,China Tobacco Standardization Research Center | Yang R.-C.,China Tobacco Standardization Research Center | Zhang Q.,China Tobacco Standardization Research Center | Shao J.-C.,China Jiliang University | And 4 more authors.
Thermal Science | Year: 2014

Standard bar of ventilation is the equipment extensively used in the tobacco industry to calibrate the variety of testing machines. The bar's performance that is usually affected by ambient conditions is numerically studied in this paper. Firstly, the geometry of standard bar is obtained by an optical microscopic 3-D measurement. Then, Solidworks is used to build the 3-D model of standard bar and Gambit is used to mesh the model. Finally, the performance of standard bar under variant ambient conditions is analyzed by Fluent. Compared with the experimental data, the numerical results are found to be quite accurate, and it is found that the ventilation rate increases linearly as temperature rise and decreases non-linearly with the growth of pressure.


Zhang Q.,China Tobacco Standardization Research Center | Shao J.-C.,China Jiliang University | Zhao H.,China Tobacco Standardization Research Center | Zhang K.,China Jiliang University | Su Z.-D.,China Jiliang University
Thermal Science | Year: 2015

Baking treatment is one of the most important processes of cigarette production, which can significantly enhance quality of tobacco. Theoretical and numerical investigation on temperature distribution in a cigarette oven during baking was carried out. The finite volume method was used to simulate the flow field. The relationship between the uniformity of temperature field and impeller's speed was given finally, which is helpful to optimize cigarette oven with better quality and less energy consumption.

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