Laser desorption/ionization of complex metal compounds with ditizone

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Complex compounds of Cu, Ag, Pd, Pt and Au with ditizone (diphenylthiocarbazone) have been studied by laser desorption/ionization activated by the surface of nanocrystalline silicon. All the studied complexes have been shown to be effectively ionized in the negative ion generation mode with the formation of molecular ions and one or more types of fragment ions. The limits of detection of metal ditizonates have been determined. The possibility of combining laser desorption/ionization with the droplet microextraction method for the determination of metals is investigated. The factors determining the concentration coefficient have been studied and optimal conditions for drip microextraction in the determination of gold have been found. The limit of gold detection was 5 pg/ml.

作者简介

А. Borodkov

Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences

Email: grechnikov@geokhi.ru
俄罗斯联邦, Moscow

Ya. Simakina

Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences

Email: grechnikov@geokhi.ru
俄罗斯联邦, Moscow

А. Grechnikov

Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences

编辑信件的主要联系方式.
Email: grechnikov@geokhi.ru
俄罗斯联邦, Moscow

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