Aysana Sadra

6 Questions 9 Answers 0 Followers

Questions related from Aysana Sadra

What is the best filter size we can use in our solvents for LC-MS/MS ?

LC-MS/MS system consisted of the 460-LC auto samplers, 212-HPLC Chromatograph Pumps. Solvents are water and methanol + 0.1 % formic acid.

16 October 2013 4,923 1 View

Does anybody know the difference of partial injection loop and full injection loop?

I am using 320 LC-Ms-Ms quadrupole. I am wondering if I can increase the volume of injection while using low concentration instead of high concentration. Do you think it helps to see a peak for...

11 July 2013 6,236 9 View

How we can improve peak background (remove noises) caused due to the absence of degasser in our solvent?

I sonicated the solvent but after passing time again we can sense the bad effect of that

09 July 2013 7,635 2 View

How can we optimize mass peak in Lc-MsMs?

Our peak are sometimes douplet and also wide

09 July 2013 1,207 12 View

Does any body have NIST Mass library to help me find the structure relate to the mass peak of 128?

I am working with Lc-Ms-Ms 320 Agilant. I can not buy NIST software because I am not sure that if really helps me or not. my standard sample is Dehydroascorbic acid but it is not stable and after...

05 July 2013 4,274 0 View

What is the reason that we can not get stable peak for both low and high PH for our sample in Lc-Ms-Ms?

Our sample expect to show peak only in Positive mode as it Does not have Proton to loos in negative mode. point is that It undergoes a kind of reversible reaction and changes. we try infusion for...

03 July 2013 8,658 4 View