geosmin retention time
Posted: Wed Nov 26, 2014 7:16 am
hello..can anyone help me..i just want to confirm what is the retention time for 1 ppm geosmin standard solution..TQ..
It is about 12.342 min
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geosmin retention time
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Re: geosmin retention time
Posted: Wed Nov 26, 2014 7:31 am
Hello
It is about 12.342 min
It is about 12.342 min
Re: geosmin retention time
Posted: Wed Nov 26, 2014 8:39 am
Welcome the the forum.hello..can anyone help me..i just want to confirm what is the retention time for 1 ppm geosmin standard solution..TQ..
It is impossible to answer your question if you do not tell us what conditions you are using for the analysis.
Peter
Re: geosmin retention time
Posted: Wed Nov 26, 2014 10:21 am
TQVM..The retention time that i got for 10^6 ng/L is about 7.978 and the peak area is about 2095457..Is it ok? or is it true?Welcome the the forum.hello..can anyone help me..i just want to confirm what is the retention time for 1 ppm geosmin standard solution..TQ..
It is impossible to answer your question if you do not tell us what conditions you are using for the analysis.
Peter
The GC/MS conditions were as follows: 50°C for 1 min, 15°C/min to 250°C, final temperature hold for 5 min; Rxi-5MS column, 30 m x 0.25 mm x 0.25 µm (Restek, Japan); vaporizing chamber temperature 230°C; interface temperature 230°C; and ion source temperature 200°C.
Re: geosmin retention time
Posted: Wed Nov 26, 2014 10:30 am
That retention time seems reasonable for those conditions.
Do you think that the peak is something not geosmin ?
If the spectrum of the peak matches geosmin, then it is geosmin and you know the retention.
Peter
Do you think that the peak is something not geosmin ?
If the spectrum of the peak matches geosmin, then it is geosmin and you know the retention.
Peter
Re: geosmin retention time
Posted: Wed Nov 26, 2014 10:30 am
Double the concentration of geosmine solution and check whether the consecutive peak is what you expected.TQVM..The retention time that i got for 10^6 ng/L is about 7.978 and the peak area is about 2095457..Is it ok? or is it true?Welcome the the forum.hello..can anyone help me..i just want to confirm what is the retention time for 1 ppm geosmin standard solution..TQ..
It is impossible to answer your question if you do not tell us what conditions you are using for the analysis.
Peter
The GC/MS conditions were as follows: 50°C for 1 min, 15°C/min to 250°C, final temperature hold for 5 min; Rxi-5MS column, 30 m x 0.25 mm x 0.25 µm (Restek, Japan); vaporizing chamber temperature 230°C; interface temperature 230°C; and ion source temperature 200°C.
Seems that Tomasz wasn't right with his estimation
Re: geosmin retention time
Posted: Wed Nov 26, 2014 10:36 am
[quote=Seems that Tomasz wasn't right with his estimation [/quote]
but I didn't have any information 
so it is still good result
[/quote] but I didn't have any information so it is still good result Re: geosmin retention time
Posted: Wed Nov 26, 2014 1:37 pm
Well within confidence interval.
Re: geosmin retention time
Posted: Wed Nov 26, 2014 9:02 pm
But not fit for purpose.
Peter