Unveiling the mechanisms behind the chemical vapor generation of plumbane for trace analysis of lead

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…Chemical vapour generation (CVG) is now a mature technique, so new developments are limited, however, the reaction mechanisms are still not fully understood. Pitzalis et al 29 investigated the mechanism of PbH 4 generation by reaction of Pb II with aqueous NaBH 4 both in the presence and in the absence of K 3 Fe(CN) 6 , using GC-MS, AFS and deuterium labelling. The authors observed that, in the absence of K 3 Fe(CN) 6 and from pH 1 to 8, Pb 2+ and/or Pb(OH) + were initially converted to solid, non-volatile species as hydrides and/or hydrido-metal complexes containing Pb–Pb and Pb–H bonds.…”