Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Simultaneous Determination of Tin, Nickel, Lead, Cadmium and Mercury in Cigarette Material by Solid Phase Extraction and HPLC

  • Hu, Qun (Institute fo Kunming Botany, Chinese Academy of Science) ;
  • Yang, Guangyu (Institute of Industry, Yunnan Academy of Tobacco Science) ;
  • Ma, Jing (Institute of Industry, Yunnan Academy of Tobacco Science) ;
  • Liu, Jikai (Institute of Industry, Yunnan Academy of Tobacco Science)
  • Published : 2003.10.20
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Abstract

A new method for the simultaneous determination of heavy metal ions in cigarette material by microwave digestion and reversed-phase high-performance liquid chromatography (RP-HPLC) has been developed. The cigarette material was digested by microwave digestion. Lead, cadmium, mercury, nickel and tin ions in the digested samples were pre-column derivatized with tetra-(2-chlorophenyl)-porphyrin ($T_2$-CPP) to form color chelates, which were then enriched by solid phase extraction with a $C_{18}$ cartridge. The chelates were separated on a Waters Xterra$^{TM}RP_{18}$ column by gradient elution with methanol (containing 0.05 mol/L pyrrolidine-aceticacid buffer salt, pH = 10.0) and acetone (containin0.05 mol/L pyrrolidine-acetic acid buffer salt, pH = 10.0)as mobile phase at a flow rate of 0.5mL/min and analyzed with a photodiode array detector from 350-600 nm. The detection limits of lead, cadmium, mercury, nickel and tin were 4,3,3,8 and 5 ng/L, respectively, in the original samples. This method was afforded good results.

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References

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