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(4-chlorophenyl)(pyridin-2-yl)methanol
Posted: Sat Aug 18, 2007 8:46 pm
by praveenpaliwal
Hellow ,
we are using GC analysis of this compound Our column is DB-17 , we dissole this compound in 1% in Acetone . Oue GC condition is
Oven 240
Injecter / Detector(FID) 250/250 degree
Nitrogen used as carrier and it's pressure is 5 psi
After some injection we does not found any responce of our compound on DB-17 we still not undrstand the problem yet why the responce of compound is disappers .
Thanks
Posted: Sun Aug 19, 2007 11:30 pm
by chromatographer1
Is the compound in a salt form?
best wishes,
Rod
(4-chlorophenyl)(pyridin-2-yl)methanol
Posted: Mon Aug 20, 2007 6:49 am
by praveenpaliwal
Compound is not in salt form because this compound give proper responce in DB-17 and custmer also use DB-17 but main problem is that this compounds responce suddenly disappears from DB-17 while this compound give proper responce on DB-1701
why DB-17 does not responding this compound whereas Ist time DB-17 gave us proper responce
thanks
praveen
Posted: Mon Aug 20, 2007 4:22 pm
by AICMM
Praveenpaliwal,
If you trim 20 or 50cm off the front of the column, does it come back? Sounds like pretty typical nitrogenous compound performance to me....
Best regards.
(4-chlorophenyl)(pyridin-2-yl)methanol
Posted: Tue Aug 21, 2007 7:14 am
by praveenpaliwal
No sir we cleaned the detector assmbly , cut the both end of column conditioning it properly but stll we got very poor responce, U suggest us to cut 30-50 cm of column we cut the column near about 5 cm on both end . the 30 - 50 cm is very high for cutting isn't it ?
regards
praveen
Posted: Fri Aug 24, 2007 6:17 pm
by chromatographer1
Has the analyte been stored without concern for exposure to air?
best wishes,
Rod
Posted: Fri Aug 24, 2007 6:18 pm
by chromatographer1
Has the analyte been stored without concern for exposure to air?
best wishes,
Rod