Sherif M. Taha

4 Questions 17 Answers 0 Followers

Questions related from Sherif M. Taha

Can one use few number of pesticde surrogates(say 6) for calculation of large number of pesticides (say 200) ?

if one build an aquesition method for analysis of 200 pesticides using GC MS MS or LC MSMS can one use a mixture of 6 surrogates and calculate the concentrations of 200 pesticdes relative to...

07 November 2017 6,818 10 View

Can one perform daily Spike/ fortified sample for pesticide residue analysis using representative pesticides, not all analysed ones?

Dear All For a MRM method involve more than 300 pesticide, can one carry out a spiking /fortified sample daily by a representative number of pesticide(10 to 30) rather than spiking by 300...

03 September 2017 8,275 4 View

LC MS TOF/Do you think that lc ms tof can now replace lc ms ms instruments for routine pesticide residue analysis?

Dear All LC MS TOF can carry out non target analysis, in addition the isotopic profile for the obtained data make the identification of these compounds more easier and reduce false positive...

03 September 2017 8,695 23 View

Do you know the reactions of Terpinen-4-ol, especially in Herbs?

Is there any one have an article or a document that denotes the chemical and physical properties of Terpinen-4-ol, especially that envolve the hydroxyl group. Including: it's possible solubility,...

14 August 2016 7,270 4 View