The speciation analysis was carried out by hydride generation-cryotrapping-atomic absorption spectrometry (HG-CT-AAS) using a custom-made hydride-generation system coupled with a cryotrap
(Hernandez-Zavala et al.
Equipping a system with an optional cryotrap
will sharpen chromatogram peaks and improve separation and sensitivity.
Solid-phase extraction (ZSTHC020; United Chemical Technologies) was followed by derivatization with 25 [micro]L N,O-bis(trimethylsilyl)trifluoroacetamide and 1% trimethylchlorosilane at 70 [degrees]C for 40 min, and 3 [micro]L was injected splitless onto a 2-dimensional (2D) Agilent 6890 GC-MS (GC-FID/5973 MSD) with a Dean's switch (Agilent Technologies) and cryotrap
(Joint Analytical Systems).
Among the prize-winning products at the show was the volatile organic compound (VOC) cryotrap
used with Gerstel's Fast Thermo Desorption System and Agilent's GC HP6850 and the Yogogawa ICP-MS.
Hydride generationatomic absorption spectrometry coupled with a cryotrap
(HG-CT-AAS) (HernandezZavala et al.
All of the urinary As species (U-[iAs.sup.III] + V, U-[MAs.sup.111 + V], U-[DMAs.sup.III + V]) were evaluated by hydride generation (HG)-atomic absorption spectrometry (AAS) with a cryotrap
(CT) for the capture and separation of hydrides (Hernandez-Zavala et al.
Gas chromatograph, Deans switch, flame ionization detector, and cryotrap
parameters for the detection and simultaneous quantification of MDMA, MDA, HMMA, HMA, and MDEA in human plasma.
containing an adsorbent, located in the injector liner, was used for enrichment and preconcentration before separation on the analytical column.
HG-atomic absorption spectrometry with a cryotrap
for the capture and separation of hydrides was used for the analysis of iAs and its metabolites in urine (HernandezZavala et al.
was then allowed to warm, and the collected arsines were separated on the basis of differential volatilization.