Multipumping flow system for improving hydride generation atomic fluorescence spectrometric determinations

A sequential injection lab-at-valve (SI-LAV) platform for hydride generation atomic absorption spectrometry (HG-AAS): on-line determination of inorganic arsenic

“…The working linear range varied between 0.15 and 6.0 mg L À1 with a good correlation coefficient (r) of 0.9994. The analytical performance of the proposed SIA-LAV-HG-AAS method has been improved in terms of sensitivity compared to SIA and multisyringe ow injection (MS-FI) systems 7,12,17 and is relatively comparable to other systems using atomic uorescence spectrometry [14][15][16] or ICP-MS (ref. 8) as the detector.…”

“…7 Automatic on-line ow techniques have proved to be rapid, simple, highly sensitive, precise and accurate for such a type of analysis eliminating many disadvantages of batch-HG systems, like high sample and reagent consumption, laborious processes, great risk of contamination and analyte loss. In the literature, many automated on-line hydride generation systems such as continuous ow (CF), 8,9 ow injection (FI), 7,10,11 sequential injection (SI), 12,13 lab-on-valve (LOV), 14,15 multi-pumping (MPFS) 16 and multisyringe ow systems (MSFIA) 17,18 have been developed in order to eliminate the above-mentioned drawbacks.…”

Atomic spectrometry update. Advances in atomic emission, absorption and fluorescence spectrometry, and related techniques

“…They validated the procedure by the accurate analysis of NRCC DOLT-2 (Dogfish Liver) and NIST SRM 1648 (Urban Particulate Matter). Lopez-Garcia et al 125 replaced the peristaltic pumping of the conventional HG flow manifold with membrane micropumps. They decreased sample and reagent consumption 8-9 fold with no deterioration in sensitivity for an AFS system.…”