Study on the Determination of Heavy-Metal Ions in Tobacco and Tobacco Additives by Microwave Digestion and HPLC with PAD Detection

Yang, Guangyu; Li, Z.; Shi, Hongmei; Wang, J.

doi:10.1007/s10809-005-0123-9

Cited by 18 publications

(1 citation statement)

References 27 publications

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“…To solve this problem, chromatographic techniques are the best choice. Most separations have so far focused on the complexes of porphyrins with metal ions using high performance liquid chromatography and high performance thin layer chromatography; [13][14][15][16][17] only a few papers have been presented involving the quantitative analysis of metals using chelating agents by HPTLC. [18][19][20][21] The purpose of this study was to develop a fast, selective, cheap, and simple possible method of separation and simultaneous determination of mercury, zinc, copper, and cobalt in aqueous solutions by HPTLC with the basis of solid phase extraction using TBHPP, TPPP or CMPP ( Figure 1) as complexing agents.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Metal Ions Using Porphyrins as Chelating Agents by High Performance Thin Layer Chromatography-Densitometry

Bozkurt

Çavdar

Kurtbay

et al. 2010

Journal of Liquid Chromatography & Related Technologies

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& A method was developed for separation and quantitative determination of mercury, copper, cobalt, and zinc as porphyrin complexes using newly synthesized tetra-(3-bromo-4-hydroxyphenyl) porphyrin (TBHPP), tetra-(4-phenoxyphenyl) porphyrin (TPPP) and tetra-p-chloromethylphenyl porphyrin (CMPP) in aqueous medium by HPTLC densitometry. The method involves enrichment of metal ions as metal complexes with octadecyl cartridges and elution using tetrahydrofuran. The analysis was performed on HPTLC silica gel plates with acetone-chloroform (2:8, v=v) as the mobile phase for TBHPP and TPPP quantification and dichloromethane-chloroform-hexane (1:1:3, v=v) for CMPP quantification. Quality parameters were confirmed and detection limits were ranged from 0.16 to 0.92 ng lL À1 . Detection was performed densitometrically in absorption-reflection mode around 420 nm. The method was found to be simple, precise and accurate for the determination of these metal ions in water and food sample.

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