AsH3 (arsine measurement)

[tigerk2001]

Try to measure 10ppm AsH3 using PDHID(VICI) and packed 10 feet HaysepD or capillary 30 metersMTX Q Bond and can't get any peak.

Some propositions??

[chromatographer1]

AsH3 is basic like NH3.

See other thread on Ammonia.

Rod

[tigerk2001]

I've been able to see the AsH3 peak using 100Celcius Hayesep D packed type column with Vici PDD. The peak starts to comes out after many injections of 0.5ml sampling loop volume of 10ppm AsH3 in balance helium. I've been able to understand that the AsH3 is absorbs by the column like O2 or CO in a Mol Sieve column. I've been able to repeat the phenomenon with 3 different columns.

[Johnny Rod]

Depending on your matrix and all that, could you use a Draeger tube (or whatever similar is available in your country)?

[tigerk2001]

Can you clarify CSI?

[dblux_]

Can you clarify CSI?

Crime scene investigations - TV serial