Zahraa Dbouk

3 Questions 5 Answers 0 Followers

Questions related from Zahraa Dbouk

Can the presence of organometallics in my sample, such as methyl lithium , lead to contamination of my ionization chamber or the mass spectrometer ?

Methyl lithium reacts with carboxylic acids to form ketones. So to determine the presence of carboxylic acids, I want to add CH3Li to my sample. I use atmospheric pressure chemical ionization and...

13 February 2023 6,085 2 View

Does any one know the reaction mechanism of triphenylphosphine with hydroperoxides ?

Triphenylphosphine reacts with hydroperoxide, reducing it into alcohol and forming tripehnylphosphine oxide. according to this reaction : C18H15P + R-OOH --> C18H15PO + R-OH Does any one know...

09 September 2022 2,353 2 View

Does using D2O as mobile phase in RP-HPLC instead of H2O can change the retention time of the molecules ?

I performed a H/D exchange by adding D2O to my sample, then analyzed it with RP-HPLC/MS (targeted SIM) using ACN/D2O as mobile phase, and discovered that the retention time of the isomers of my...

13 May 2022 1,088 4 View