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With the concern and attention to environmental protection, health indicators, the cigarette industry in 2007 introduced the relevant restrictive criteria, called for the strengthening of the detection and control of of trace toxic, harmful substances. National and industry mandatory standard for the limited parameters of lead (Pb), arsenic (As), mercury (Hg), chromium (Cr), cadmium (Cd), nickel (Ni) 6 as a negative indicator of national institutions will be periodically sampling . However, most of the relevant testing standards or reference food industry testing standards, reference methods are not specifically regulated, different processing methods have a great impact on the test results of sample handling. Therefore, is used in day-to-day supervision and inspection timely quality risk prevention accessories, as well as the accessories product quality risk, accurate, sensitive and efficient test methods are particularly important. According to the characteristics of the detection method, based on the national standards in the food industry, As, Pb, Cd, Cr, Ni detection method and the tobacco industry is now used detection methods, the establishment of a cigarette accessories toxic elements is simple, accurate and sensitive efficient test methods. The study is mainly of two parts of the pre-processing and detection methods. In pretreatment samples were digested by microwave and conventional wet digestion, hydride generation - atomic fluorescence spectrometry (HG-AFS) determination of As content and graphite furnace atomic absorption spectrometry (GF-AAS) determination of Pb, Cd, Cr, Ni content. . Tipping paper, flavors and fragrances, glyceryl triacetate and white latex is selected as a typical representative of the study. The experimental results show that under microwave irradiation, using HNO3: HF: HCl: H2O2 = 6:0.2:1:1 mixed system digestion tipping paper and HNO3: HCl: H2O2 = 5:1:2 digestion of flavors and fragrances, latex and Triacetin complete digestion, good effect, feasibility, with high accuracy and precision. HG-AFS determination of As elements in cigarette accessories. Under optimized conditions, the As concentration of 0 ~ 20μg / L, the linear correlation coefficient of 0.9996 As the detection limit of 1.38 ng / L, the lower limit of quantification for 0.36μg / L, the recovery of 98 to 110%, suitable for quantitative analysis of trace elements. GF-AAS method for determination of the elements of Pb, Cd, Cr, Ni cigarette accessories. The relative standard deviation is less than 10%, a recovery of 94% to 105%, the detection limit for 0.036μg / L ~ 1.381μg / L. Comparison of different testing organizations test results show that the same sample in comparison results between different laboratories with good reproducibility. This method is simple and convenient, suitable for large quantities of samples detected in the tobacco industry, and in line with industry standards, and has laid a good technical guidelines for the development of Hunan tobacco accessories quality control technology.
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