Arsenic speciation by capillary gas-liquid chromatography.
Specific environmentally significant arsenic compounds are determined by capillary gas-liquid chromatography. Inorganic (arsenite, arsenate) and organic (monomethylarsonate, dimethylarsinate) arsenicals are measured as the corresponding methylthioglycolate derivatives, which are simultaneously separated on wide-bore borosilicate glass and fused-silica columns under conditions of temperature programming. Inorganic arsenate and arsenite cannot be differentiated by the derivatization technique. Flame-ionization and electron-capture detection are evaluated. A simple and rapid sample preparation procedure is used for water, urine, blood, and tissue.
D001151:Arsenic / Q000032:analysis*; D001152:Arsenicals / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D004563:Electrochemistry; D007202:Indicators and Reagents
D001152:Arsenicals; D007202:Indicators and Reagents; D001151:Arsenic