Affordable Access

Publisher Website

Gas chromatographic detection of organometallic compounds by reactive-flow photometry

Authors
Journal
Analytica Chimica Acta
0003-2670
Publisher
Elsevier
Publication Date
Volume
477
Issue
2
Identifiers
DOI: 10.1016/s0003-2670(02)01419-8
Keywords
  • Detection
  • Gas Chromatography
  • Organometallic
  • Selective
  • Sensitive

Abstract

Abstract The response of the reactive flow detector (RFD) toward organometallic compounds of several transition metals has been explored, and several of its strong elemental responses have been characterized in detail. The RFDs minimum detectable flow (measured in picograms of metal per second at S/N p-t-p=2) is 0.1 for ruthenium, 3 for chromium, 10 for manganese, 5 for nickel, 15 for iron, and 2 for osmium. Typically, the linearity of response spans four orders of magnitude, with atomic selectivity of metal versus carbon ranging from 2 to 3 orders. Response quenching by co-eluting hydrocarbons is not observed. As a demonstration experiment, the common analysis of methylcyclopentadienyl manganese tricarbonyl (MMT) in gasoline is carried out on an RFD system modified for dual-channel operation. The results show that dual-channel operation of the RFD can increase the native elemental selectivity of manganese over carbon by a factor of 100, in accordance with earlier results obtained on a special version of the flame photometric detector (FPD). Significant differences exist between the optical spectra of carbon flame species resulting from various combustion modes carried out in the RFD capillary, and also between conventional FPD and typical RFD spectra. Consideration of these spectral differences suggests that the virtual absence of C 2 ∗ in the reactive flow may be the primary reason why analyte response quenching by hydrocarbons, while prominent in the FPD, is not observed in the RFD.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Selective detection of organometallics in gas chro...

on Journal of Chromatography A Jan 01, 1972

Selective detection of organometallics in gas chro...

on Journal of chromatography Dec 20, 1972

Plasma emission spectral detection for high-resolu...

on Journal of Chromatography A Jan 01, 1982

Analysis of organotin compounds by gas chromatogra...

on Journal of Chromatography A Jan 01, 1999
More articles like this..