Metal Ion-Assisted Photochemical Vapor Generation for the Determination of Lead in Environmental Samples by Multicollector-ICPMS

Abstract

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Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry

“…In addition, in the presence of low concentration of chloride, signal suppression was noted for the determination of Ni and Sn when attempting PVG [28,29], preventing their direct determination in seawater. Most recently, it was noted that the low recovery of analyte from real sample matrices may be due to use of optimum conditions developed for PVG with calibration standards which are different from those required with the sample matrix [30].…”

“…During PVG optimization and sample analysis, gas flow to the nebulizer was stopped in order to achieve best sensitivity of As using PVG. A schematic of the UV-PVG photoreactor interfaced to the ICPMS has been presented earlier [30]. The UV-PVG system consists of a 19 W thin film flow-through lamp (Beijing Titan Instruments Co., Beijing, China) loosely covered with aluminum foil to shield the operator from exposure to the UV.…”

Direct Determination of Trace Antimony in Natural Waters by Photochemical Vapor Generation ICPMS: Method Optimization and Comparison of Quantitation Strategies

“…For PVG optimization and sample analysis, gas flow to the nebulizer was stopped, as a result of wet plasma significantly decreasing the PVG response of Sb, possibly due to reabsorption of Sb volatile species onto mist of water in the spray chamber. The UV-PVG photoreactor was interfaced to the ICPMS as detailed earlier, 31 as shown in Figure 1. The 19 W UV-PVG photoreactor was obtained from Beijing Titan Instruments Co. (Beijing, China) and provided a source of 185 nm radiation.…”

“…26,27 Recently, it has been reported that, when a relatively thin film of sample solution is exposed to the UV, the presence of deep-UV radiation (185 nm) facilitates PVG reactions, leading to enhanced analytical performance for Sn, 27 Br, 28 Se, 29 Hg, 30 and Pb. 31 The purpose of this work was to develop a sensitive, accurate, and simple method for the direct determination of trace Sb in natural waters by ICPMS with use of a flow-through thin-film deep-UV reactor. The accuracy of the proposed method is demonstrated by successful analysis of two river water certified reference materials (NRC SLRS-6 and NIST 1640a) and recoveries of spikes to seawater CRMs.…”

Preconcentration and Determination of Cadmium, Lead, and Cobalt inMoringa Oleifera(Moringaceae) Using Magnetic Solid-Phase Extraction and Flame Atomic Absorption Spectrometry

“…Flame atomic absorption spectrometry (FAAS) was used for the determination of cadmium and lead in in fruit and water (Behbahani et al 2015); inductively coupled plasma-optical emission spectroscopy (ICP-OES) for Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Na, Ni, Pb, P, Rb, Sr, and Zn in Cantharellus cibarius and topsoil (Drewnowska and Falandysz 2015); atomic fluorescence spectrometry for cadmium in seafood and rice (Yang et al 2015); and inductively coupled plasma -mass spectrometry for Cd and Pb in hepatopancreas of Armadillidium vulgare (Mazzei et al 2015). Electrochemical X-ray fluorescence spectroscopy Downloaded by [Dalhousie University] at 10:07 11 October 2015 (Hutton et al 2014) and multicollector inductively coupled plasma mass spectrometry (Gao et al 2015) were also reported to determine metals in various materials.…”