Page 129 - Modern Derivatization Methods for Separation Sciences

Document Página 1 de 2

Page 54

Table 1.3.1. Environmental contaminants using sampling method with derivatization [7]

Analyte Method Reagent Solvent or
absorbent

Aldehydess and ketones TO-5 HCl/2,4-dinitrophenyl hydrazone iso-octane

Ethylene oxide and propylene NIOSH1614 HBr Activated
oxide carbon

Acroleine NIOSH2501 2-(hydroxymethyl) pyperidine XAD-2

Diazomethane NIOSH2515 Octanoic acid XAD-2
2,4-Toluene diisocyanate NIOSH2535 N-[(4-nitrophenyl)]propylamine -

2,4-Toluene diamide NIOSH5516 1-(2-methoxyphenyl) pyperazine Toluene

2,4-Toluene diisocyanate and NIOSH5521 1-(2-methoxyphenyl)pyperazine Toluene
4,4'-Methylene diphenyl
diisocyanate
Hydrazine OSHA20 H SO Gas chrom R
2 4
Maleic anhydride OSHA25 p-anisidine XADS-2

Methyl isocyanate OSHA54 1-(2-Pyridyl)Pyperazine XAD-7

Fig. 1.3.4.
Scheme of pre-treatment for the chromatographic analysis

http://emedia.netlibrary.com/nlreader/nlreader.dll?bookid=17968&filename=Page_54.html 30/09/2003