13 Questions 46 Answers 0 Followers
Questions related from Chang-Er Chen
Hi guys, Recently we tried the TOF MRM function and in the table, we have 9 chemicals in 9 channels/rows (Figure 1). then we acquired the data but found that only 4 MSMS functions/channels...
27 September 2019 3,725 6 View
We have a Superlcowax 10 GC column (30m, 0.2mm, 0.2um) and I am using it for essential oil chemicals analysis as recommended. I have a-Pinene, beta-Pinene, camphene, careen, limonene, terpinolene...
11 October 2016 419 13 View
i might design a flow through system, and need control the pH and hardness of the water? anyone has expierence on this? thinking of using buffer dosing and salt, but might need quite a lot. i will...
24 July 2016 4,840 6 View
Hi guys, I am using the waters Micromass API MS. Recently, I found out that at the source page (tune), negative mode capillary voltage stuck at 0, no matter what I tried to apply, but if use...
29 September 2015 1,685 2 View
Hi guys, I am bit confused again by the masslynx application managers: what are the differences between Targetlynx and Quanlynx? it seems both of them can do quantification. thanks.
27 February 2015 7,564 4 View
Hi everyone, I am doing MRM on our Micromass API MS. I am wondering how should I set the scan times, like inter-channer delay, inter-scan delay and dwell time? any tips for these settings? I am...
23 February 2015 1,606 10 View
I injected BPA and estrogens, and used a 100mm column to separate them. Detected by MS in sim mode. Then I found out, for example: for BPA, there are two peaks: normal peak as expected with small...
16 December 2014 6,842 11 View
Hi guys, I am wondering can we do FIA on the Masslynx? It is a good function, but I can not find it for masslynx? If masslynx does not have this funciton, I am wondering it is possible to install...
26 November 2014 2,563 11 View
Hi again, could be another stupid mistake, but I have edited all the necessary cell in the sample list, including inlet method, ms method, and try to run by clicking the start in the masslynx...
20 November 2014 6,706 8 View
I am going to make a binding phase with PDMS but loading some XAD resin in to it. Any idea how can I do this in order to make a evenly distributed film? Thanks.
03 September 2014 4,329 2 View
Hi everyone, I am going to load XAD16 resin into poly(ethylene-co-vinyl acetate-co-carbon monoxide) (PEVAC) to make a resin sheet. I need to dissolve the PEVAC beads in hot Toluene, so I am...
11 August 2014 4,855 2 View
I am a little bit confused by these two methods, is the IDM best? What is relationship of these two methods? Is IDM one kind of ISM? In addition to these questions, what about the surrogate...
11 July 2014 1,186 7 View
We are currently working on some personal care products with LC-MS (single quad). We can observe a nice peak for Bisphenol A (BPA) with direct infusion or FIA (like for 200ppb). However, when we...
26 November 2013 596 4 View
