Mahmoud Elagamy

6 Questions 11 Answers 0 Followers

Questions related from Mahmoud Elagamy

Could you recommend me a trusted and most famous reference or a guide book describing the chemical and physical properties of pharmaceuticals ?

as I see some differences in such data from website to another specially the solubility and pKa

01 January 2019 9,769 5 View

How to remove the solvent or the mobile phase peak ?

In HPLC-DAD there is always persistent peak that comes very early and with a valuable Absorbance even with blank samples may be it comes from the solvent or so, How could I get rid of it in order...

12 December 2018 2,501 5 View

Is there any practical method to distillate Acetonitrile from water mixture ? I need the optimum condition to do this efficiently on the Rota Evab?

in HPLC-DAD I usually use Acetonitrile -Buffer solution as a mobile phase the question is Is there any practical method to distillate Acetonitrile from water mixture ? I need the optimum...

12 December 2018 630 3 View

How can I improve my baseline here in this chromatogram? Is it possible?

As I'm a beginner I found a problem with the shape of my chromatogram.. I see my peaks are sinking down under it.. HPLC Agilent 1260-DAD , column poroshell 120-(3x50mm) 2.7 micron ACN : phosphate...

12 December 2018 9,242 9 View

I need help from one who has an experience in analysis of pharmaceuticals in waste water using HPLC-DAD and SPE technology ?

Hello there, I am working on investigation of pharmaceuticals and other micro-pollutants in urban water by using HPLC-DAD with SPE sample preparation >>>>the problem is its very low limit of...

06 June 2018 1,356 3 View

Now I'm trying to estimate roughly the amount of irrigation water saved from complete replacing sand soil into vermicompost..

I know that we need more information like type of vegetation and surface area and weather but just consider a unit area like 1square m and optimum weather at equal conditions for both types of...

06 June 2017 6,094 5 View