I have been using gas chromatography for qualitative analysis of samples for some time now. I am currently using it for quantitative analysis of a mixture of ...
I would recommend that you complete a recovery experiment using a single internal standard. If you do not obtain accurate results for all of you analytes then...
the Shifflets
shiffty@...
Jun 1, 2004 9:56 am
1897
Dear ALL, can someone tell me what is the ideal "cleaning period" and ideal "solvent" for a C18 column. My mobile phase consists of acetonitrile (acid added). ...
With all methods there may be slight differences in cleaning the column but with the method that you described I would try the following: 1. Wash column with...
the Shifflets
shiffty@...
Jun 2, 2004 9:56 am
1899
Hi. I am looking for a refurbished or used GC in good condition. GC should be equipped with TCD and FID detector in series as well as porivision for ...
Hi, we are trying to find a new home for a gc (purchased in 1996) from Ai Qualitek Cambridge UK. The GC is kept in Sheffield (UK). It has both FID and ECD,...
I've noticed that many researchers are moving to capillary (microbore) LC because of the small sample amounts and low solvent costs associated with it compared...
Cory, Unless you are limited to a few microliters of total sample in studies, you are better off with classical HPLC due to the challenges involved. If ...
I am an analytical chemist with ten years experience in Analytical laboratory.I am a Canadian citizen residing in greater Toronto area. If any one can has a...
HAI FRIENDS IF ANY WORK WITH QSRR, QSAR RELATED TO HPLC LIKE THE STUDY OF A SET OF ORTHOGONAL HPLC SYSTEMS RELATED TO QSRR CONTEXT? DUE YOU HAVE ANY IDEA...
Are you visiting HPLC 2004 in Philadelphia next week? separationsNOW - the online portal for separations scientists - will be exhibiting at stand 207. If you...
Can anybody help me getting analysis method for Atorvastatin Calcium __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo!...
Refer the Journal of Chromatography on siencedirect.com srinivas ... [Non-text portions of this message have been removed]...
M SRINIVAS REDDY
srinureddi@...
Jun 15, 2004 10:30 am
1909
-here are some references: 1)A six-month, multicenter, open-label, noncomparative, prospective, observational study of the efficacy and tolerability of...
search in pubs.acs.org and chemjobs or their job positons. GOOD LUCK ... __________________________________ Do you Yahoo!? Yahoo! Mail - You care about...
Hi try Radl, Stanislav. A new way to tert-butyl [(4R,6R)-6-(2-aminoethyl)- 2,2-dimethyl-1,3-dioxan-4-yl]acetate, a key intermediate of atorvastatin synthesis....
I am looking for a cpm[any, preferably in the US, who can pack an HPLC column with a special packing material. With best regards, John C. Fetzer, PhD Fetzpahs...
Dear fellow chromatographers, I would like to import a few spectra into our Chemstation (Version A.10.01). Currently I have these spectra available as ASCII...
matthias.kummer@...
Jun 30, 2004 9:03 am
1917
mkjd> I would like to import a few spectra into our Chemstation (Version mkjd> A.10.01). Currently I have these spectra available as ASCII (Text)-Files, mkjd>...
B.Prusisz
prusisz@...
Jun 30, 2004 10:29 am
1918
I've been working on developing a general robust reverse phase analytical method for purity analysis of natural products. I'm using a 5um C18 150x4.6mm column...
I use a kit Recipe to determine in my Lab Vit A and Vit E: the problems are: 1) no recover of Vit E in 1 sample over 3 that is the no peak at all 2) the...
Gianfranco Bruno
gianfranco.bruno6@...
Jun 30, 2004 3:37 pm
1921
Dear All, Recently i have started working with MALDI-ToF-MS. I am new to this area. I would like to know that the spectra which i get in MALDI (m/z) can be...
Does anyone know how does that column work with mobile phases, how do i pack it or anything that needed to be noticed?? (i only know it's used to remove the...
I've never done MALDI, but i have done a lot of electrospray MS. In our software (LC2Tune is the program that collects the data and monitors the machine), the...
I am switching between 2 LC-MS methods one of which is mobile phase (A: 0.1% FA, B: ACN/0.1%FA) and the other I call Mobile phase 2(A: 95/5 H20/ACN /5mM...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
