Application of TLC and LA ICP SF MS for speciation of S, Ni and V in petroleum samples
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- 作者：Nopparat Vorapalawut ; Mauro Martinez Labrador ; Pawel Pohl ; Manuel Caetano ; Jose Chirinos ; Carine Arnaudguilhem ; Brice Bouyssiere ; Juwadee Shiowatana ; Ryszard Lobinski
- 关键词：LA ICP SF MS ; TLC ; Crude oil ; Speciation ; Metals
- 刊名：Talanta
- 出版年：2012
- 出版时间：15 August, 2012
- 年：2012
- 卷：97
- 期：Complete
- 页码：574-578
- 全文大小：634 K
文摘
A coupling of thin layer chromatography with laser ablation ICP SF MS was developed for the fractionation of Ni, V, Fe and S in crude oil and its fractions (saturate, aromatic, resin and asphaltene). The detection limits were 18 ng g?1 and 23 ng g?1 for nickel and vanadium, respectively, and a sample could be characterized in terms of the metal distribution as a function of species polarity within 10 min. The method was used to characterize the metal distribution in crude oils of different origins and their different fractions.