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a.fedulova
Hi community, maybe you have information on working with cosmetic products. What kind SPE can used for extraction oxidation dyes from ready-made hair dyes. Example: 1-Naphthol, Toluene-2,5-Diamino Sulfate , 2,6 – Diaminopyridine, 2,4 –Diaminophenoxyethanol HCI, 2 Amino-3- Hydroxypyridine, etc.   And what kind SPE can used for Extraction of… (Show more)
in Sample Preparation
fcozzi
I know that before loading a Capitva EMR cartridge 20% water should be added to an acetonitrile extract but I have found in this paper "Fast and Sensitive Quantification of D9-Tetrahydrocannabinol and Its Main Oxidative Metabolites by Liquid Chromatography/Tandem Mass Spectrometry" by Vozella et al, an approach in which the cartridge is… (Show more)
in Sample Preparation
plowmase
Working in small volumes - Jojoba oil breaks into free fatty acids and fatty alcohols after the -OH reaction.  The fatty alcohols remain through the process untouched and end up in the chromatography.  How can you remove the fatty alcohols so that you only see the fatty acid profile. 
in Sample Preparation
hepi77
Hi,   We are developing and validating a method for presides in animal feed (so potentially high fat) for GC/MS. Which of the Quechers test kit and method do people recommend for this?   Thanks
in Sample Preparation
mnevill
                                                       The Influencers Community is an advisory board of experts and decision makers from scientific fields such as Biopharma, Life Sciences and Genomics, with the goal of advising Agilent on the future of these industries. We are looking for US-based scientists/professionals in an analytical,… (Show more)
wilsonreivax1909
My sample are made by sesame oil, estratio enanthate and algestrone. I extract API with acetonitrile and methanol with good recovery, but if many durty peaks from sesame oil. I would like to clean up the sample before inject in HPLC, and think to uso a SPE system.
in Sample Preparation