Abstract
An optimized hydride generation gas chromatography system for analysis of aqueous solutions is presented that employs an intermediate cold trap but is tolerant of water vapor, CO/sub 2/, volatile boranes, and other spurious byproducts from a BH/sub 4//sup -/ reactor without requiring drying agents or CO/sub 2/ scrubbers. The system is free of background and byproduct interference. The overall hydride generation gas chromatography system is inert toward SeH/sub 2/ and does not suffer significant loss of this compound. A specially conditioned Tenax-GC column suppresses unwanted byproduct elution and separates volatile hydrides of As, Se, Sn, and Sb at room temperature (isothermal). A photoionization detector is used for generalized multielement hydride response to these four elements. Detection limits in the original water solution are as low as 0.025 ng (0.01 ppb in a 28-mL sample). Once sample analysis is complete, byproduct desorption may be induced by heating the column briefly to approx. 100/sup 0/C.se
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
