Can anyone help me with development of a method to determine calcium content in tablets by HPLC using a fluorescence or UV detector? They are the only...
Hi, A quick search on SciFinder yielded the following articles that may be of interest to you. I would be happy to help with the French one if you get stuck....
Dear friends, I am working on development of plasma catecholamines method for HPLC with, preferrably eletrochemical detection. Any of you have some insight...
Maurício Pacheco d...
mpa@...
Aug 10, 2004 12:20 pm
1935
Dear friends, I am working on development of plasma catecholamines method for HPLC with, preferrably eletrochemical detection. Any of you have some insight...
Maurício Pacheco d...
mpa@...
Aug 10, 2004 12:21 pm
1936
I used a Biorad method for plasma catecholamines with an extraction through alumina butr now I prefer the method with fluorimetric detection of Recipe ...
Gianfranco Bruno
gianfranco.bruno6@...
Aug 10, 2004 3:14 pm
1937
Dear friends, I'm using capillary chromatography (Agilent-6890 with FID) with split (ratio 20:1) and cannot pass system suitability for peak areas (about...
SOme references. You may find much more from Scifinder: Evaluation of a simple plasma catecholamine extraction procedure prior to high-performance liquid ...
Sima, It seems like your problem is most likely injection related and not column related. I would 1)Make sure your not overloading the injection port....
George Perham
gperham@...
Aug 11, 2004 11:44 am
1940
Dear Sima, if it is possible in your special case you could consider the use of an internal standard. Sincerely, Matthias ...
matthias.kummer@...
Aug 11, 2004 12:59 pm
1941
Dear Chromatographers I would like to know if somebody could send me a copy of TURBOCHROM v 4.0 for my Perkin-Elmer GC . I guess there are so many files...
Dear all, I feel very inspired and encouraged with all the e-mails in this group. My background includes bachelors degree in pharmaceutical sciences and a ...
Dear friends Molamma and Gianfranco, Very thanks about your contacts and insights. They will be very usefull. Best regards, Maurício Pacheco PS: Gianfranco,...
Maurício Pacheco d...
mpa@...
Aug 12, 2004 1:58 pm
1944
Hi, I would also recommend an internal standard. I would also try a goose neck liner with the narrow end inserted toward the gold seal. What is your injection...
the Shifflets
shiffty@...
Aug 17, 2004 12:46 am
1945
Hello friends Does any of you have a HPLC test method for alpha-tocopherol? Appreciate any help on this matter Pedro Bento...
I was hoping folks could help me with generating a general robust method for assessing small molecule compound purity via HPLC/UV. Our current method consists...
hello important things to ener in account: 1. with the Software of the equipment between estandar and sample the match angle smaller of 15 must , this is tip...
Hi, This looks like a good method, and no one method will be capable of separating and detecting every analyte. That being said I have a couple of questions /...
the Shifflets
shiffty@...
Aug 29, 2004 12:38 pm
1949
Thank you for your response. I am currently using a diode array detector and monitoring at 210nm. Under this particular method, when analyzing our lead...
Hi All, I am troubleshooting a transport assembly on an Agilent 1100 series HPLC auto sampler. Does anyone have the torque2 macro for testing the belt...
George Perham
gperham@...
Aug 31, 2004 2:46 pm
1951
Hello friends I am trying to do some studies on the presence of Citricidal (diphenol hydroxybenzene) on GrapeFruit Extracts, Lemon and Citrus extracts, Olive...
Hi, I have some other suggestions that may be of value. 1. Is the injection solvent high in organic composition? If so you could modify it to contain more...
the Shifflets
shiffty@...
Sep 8, 2004 12:52 am
1953
Dear all, Can anybody help me with the analytical HPLC method in determining the purity of Gabapentin ? Thanking you all in anticipation, From, Mr. Kiran Desai...
Has anyone analysis zoledronic acid using HPLC before?? I have found one paper on this drug which is published on the Journal of Pharmaceutical and Biomedical...
Good day group members. I am looking for an HPLC/GPC/GC or normal chemistry method for the quantetive determination of Keropur(r) (active component is ...
Groenewald, Conrad (CW)
conrad.groenewald@...
Sep 10, 2004 10:23 am
1957
The NOAA/National Ocean Service/ Center for Coastal Environmental Health and Biomolecular Research in Charleston, SC (CCEHBR) has two contract positions open...
Good Morning group members: I wonder if some one in the group has any experience in the analysis of a product containing Diclofenac K, plus Vitamins B1-B6 and...
Hallo, does someone analyze AA composition by HPLC afer derivatisation with OPA and FMOC? Which is the most useful column? Can a C18 column work well? Thank...
Dear Anybody, We are planning to use GC 14BPTF (Shimadzu) for the analysis of ethanol in water solution and ethanol in air mixtures using FID and TCD. Please...
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