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Huang G.,Beijing Tobacco Quality Control and Detection Station | Fang Y.,Beijing Tobacco Quality Control and Detection Station | Yu H.,Beijing Tobacco Quality Control and Detection Station | Tao L.,Beijing Tobacco Quality Control and Detection Station | Tang X.,Beijing Tobacco Quality Control and Detection Station
Acta Tabacaria Sinica | Year: 2013

A method to determine lead content in cigarette filter using microwave digestion and graphite furnace atomic absorption spectrometry was developed. Experimental conditions were optimized. Ashing temperature, atomization temperature and matrix modifier applied were 1000°C, 2000°C and 1.0 g/L of palladium (II) nitrate dihydrate. Under optimum conditions, the detection limit was 0.084 μg/L, while relative standard deviations were less than 3.26%. The recoveries of samples ranged from 86.3% to 99.8%. Result show that the method is simple, accurate, sensitive, reproducible, and validate for the determination of lead in cigarette filters. Source


Huang G.,Beijing Tobacco Quality Control and Detection Station | Lin L.,Beijing Tobacco Quality Control and Detection Station | Tao L.,Beijing Tobacco Quality Control and Detection Station | Qu Y.,Beijing Tobacco Quality Control and Detection Station | And 4 more authors.
Tobacco Science and Technology | Year: 2013

In order to improve the accuracy of test results, the measurement uncertainty of phenol in mainstream cigarette smoke by high performance liquid chromatography (HPLC) was analyzed and evaluated. The mathematical model for measurement uncertainty assessment was established and the sources of uncertainty were identified. The results indicated that the main sources of uncertainty were smoking process, measurement repeatability and the process of standard solution preparation. The standard uncertainty of measurement results was 0.2 μg/cig and the expanded uncertainty was 0.4 μg/cig (k=2) at the confidence level of 95%. Source

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