JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 34 Issue 5
September 2019
Article Contents
MA Shengnan, WANG Jianmin, FENG Yajie, et al. Improvement of pretreatment method for determination of metal elements in cigarette ash by atomic absorption spectrometry[J]. Journal of Light Industry, 2019, 34(5): 32-39. doi: 10.3969/j.issn.2096-1553.2019.05.005
Citation: MA Shengnan, WANG Jianmin, FENG Yajie, et al. Improvement of pretreatment method for determination of metal elements in cigarette ash by atomic absorption spectrometry[J]. Journal of Light Industry, 2019, 34(5): 32-39. doi: 10.3969/j.issn.2096-1553.2019.05.005 shu

Improvement of pretreatment method for determination of metal elements in cigarette ash by atomic absorption spectrometry

  • Received Date: 2018-12-26
    Accepted Date: 2019-05-09
  • In the process of measuring the content of metal elements in cigarette soot by atomic absorption method, if the pre-treatment method was used directly, the clarity of the digesting solution was poor and the RSD of the measurement results were high. In order to solve this problem, a pre-treatment method of combined ashing and microwave digestion was proposed. The digestion acid system of microwave digestion and ashing conditions of the muffle furnace were optimized. The results showed that the acid system mainly affected the accuracy of the measurement results. When the volume ratio of HNO3, HF and H2O2 was 7:0.5:1.5, the microwave digestion effect was the best. The ashing mainly influenced the RSD of the results. When the sample quality was 0.10 g, the ashing temperature and time were taken at 600℃ and 60 min, respectively, RSD values matched well with predicted values. Compared with direct microwave digestion, the RSD of potassium, calcium, magnesium, iron, manganese, zinc, and copper elements dropped dramatically, using the dry-wet combination method. The results of recovery experiments showed that the RSD of each element was 1.33%~2.41% and the average recovery was 97.77%~102.05%. Above all, this method had favorable repeatability and accuracy, and could be used for reference in the selection of pretreatment methods for homogenized samples.
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