This is currently a GC/MS test and we would like to take it to LC without derivatization
Paul,
you are correct. not only wll that column work it will work at 10 cm length and in much less time for overall analysis. we look forwrad to saving an enormous amount of time and some money on this analysis
Hi, does anyone know of an online site for accessing echocardiograms with associated audio of pathologic valves? I am trying to find examples of valvular pathology which can be visualized by med...
30 May 2024 1,305 0 View
Dear colleagues I have to prepare a document for Oxford University Publishing group that follows an unusual way of listing references. It requires that references meet two conditions: All are...
28 May 2024 5,612 4 View
Hi Research Gate people! I am trying to determine the sample size, power and alpha boundary needed for my interim analysis for a registered report in a psych journal. I have read the paper by...
28 April 2024 3,444 2 View
There has been recent interest in expanding the introduction of data science ideas in K-12 education. How often are these ideas connected to the linear/matrix algebra foundations of the subject?
22 February 2024 1,805 3 View
Submitting research paper on persecution and execution of Anabaptists during this period, and unable to locate a source for total figures.
28 November 2023 8,673 0 View
We are currently having some problems with DAF2 or DAF-FM fluorescence. We use a 5µM concentration and are not able to see any effect of a stimulation on DAF fluoresnce. When looking cells under...
16 November 2023 8,182 0 View
I have a western blot that I am visualizing with a colorimetric solution and I have no bands. I know there is something on the membrane however, because I stained it after transfer. I blocked in...
19 October 2023 9,628 4 View
Good day everyone ! I'm having trouble using MitoTracker CMXRos on Arabidopsis thaliana seedlings roots (7 days old). I'm using the dye at a concentration of 250 nM in liquid MS medium and with 30...
09 October 2022 7,282 2 View
I need a standard method to qualitatively assess, by inspection, the number of ants seen under artificial cover objects (plywood) when examined on a weekly basis. This would seem most likely via a...
30 April 2022 8,665 3 View
I am looking at data from several different Quantum Design SQUID Magnetometers. I was wondering if anybody has information on what kind of temperature variations might be expected between...
07 April 2022 3,181 0 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...
11 August 2024 8,141 3 View
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 View
I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...
08 August 2024 8,329 0 View
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 View
Dear QE-users, In the method where full MS positive mode and PRM mode are used, we always get an incorrect auxiliary gas reading (41 instead of 25). This only happens in this method; other...
06 August 2024 4,953 0 View
Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?
06 August 2024 980 5 View
I am analyzing cherts from different sources found within one specific geologic formation using ICP-MS/ES. My committee was asking this question about my analysis. I was not sure how to answer this
05 August 2024 7,902 3 View
There are anaerobic gas pak jars and environment providers in the laboratory that provide anaerobic environmental conditions for the growth of anaerobic bacteria. However, there is no anaerobic...
05 August 2024 4,945 3 View
Have you ever seen a LC-MS/MS method uses both internal standards and external standards (in matrix matching purpose) but the concentrations of internal standards are outside the calibration curve...
05 August 2024 3,084 6 View