Vapor Generation by UV Irradiation for Sample Introduction with Atomic Spectrometry

Abstract

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Simple interface of high-performance liquid chromatography–atomic fluorescence spectrometry hyphenated system for speciation of mercury based on photo-induced chemical vapour generation with formic acid in mobile phase as reaction reagent

“…In the past years, photo-induced reduction or CVG was reported as a technique for remediation of heavy metal contamination [16][17][18][19]. This chemical vapour generation, in presence of organic acid under UV irradiation, was also coupled with atomic spectrometry for the analysis of selenium, mercury and other metal or non-metal element [20,21], which proved that the green, simple and selective UV-CVG is a useful new alternative to the conventional KBH 4 system. Further, a UV/nano-TiO 2 vapour generation device with formic acid was adopted for coupling HPLC with ICP-MS for the determination of inorganic Se(IV) and Se(VI) [22].…”

Application of chemical vapor generation in ICP-MS: A review

“…Guo et al [41] first introduced PVG in 2003, and applications of this new sample introduction quickly expanded [42,43]. A wide range of elements can be photochemically derivatized to volatile species, such as Hg [44,45], Ni [46,47], Se [43], Co [48,49], Fe [50], and I [51,52].…”

Mercury speciation by a high performance liquid chromatography—atomic fluorescence spectrometry hyphenated system with photo-induced chemical vapour generation reagent in the mobile phase

“…While, Bendl et al [14] suggested reducing species CH 2 CO generated in the photo-reduction process according to (2).…”

“…Photo-induced chemical vapour generation (CVG), introduced by Guo et al [1,2] is a new alternative sample introduction technique to traditional chemical vapour generation [3,4]. In this novel sample introduction method, volatile species were generated under UV irradiation with low molecular weight organic acid.…”

“…It has many advantages such as avoiding the use of unstable potassium or sodium borohydride and decreasing interference of transitional metal ions. This technique can be applied to the analysis of conventional hydride-forming elements transition metals, noble metals, Hg and nonmetals such as I and S [2]. Low molecular weight organic acid such as formic, acetic and propionic acid, were the mostly used photo-reduction reagents, but other chemicals such as aldehyde and alcohol were also reported [5].…”