Review and cite PEAKS protocol, troubleshooting and other methodology information | Contact experts in PEAKS to get answers
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Questions related to PEAKS
Good Day!!! I am using Shincarbon ST column( Catalog No #19808) for separation of permanent gases using TCD detector. I was able to elute H2,CO,CH4, CO2 gases without any problem( see attached...
04 February 2020 6,374 3 View
In my case, which one do I have to choose, where I work on electrodeposition of silver? best regards
02 February 2020 9,782 3 View
I am measuring Raman scattering of dried sodium citrate capped gold nanostars and observed strong peaks around 2000 1/cm and 2150 1/cm and can not identify them. These samples were mixed with 0.8%...
29 January 2020 6,237 1 View
I synthesized PEDOT:PSS at the EDOT:PSS ratio of 1:12.5 in DI water. I want to investigate the functional groups of PEDOT:PSS through FTIR but the problem is that water has a big interference, and...
06 January 2020 9,986 1 View
We have deposited the silicon nitride (SixNx) on the silicon (Si) substrate using atmospheric pressure chemical vapor deposition (APCVD) technique. After the measurements, the ellipsometer results...
04 January 2020 1,481 3 View
Hi, everyone, I’m utilizing the FTIR to analysis microplastics. However, I cannot find the C-C bond peak or C-H bond peak in the result(black one). The result was shown in the below. As you can...
03 January 2020 6,308 3 View
In the result of the test for Raman spectroscopy, there are many broad peaks that including a lot of information. In fact, How can I correctly separate those peaks?
27 December 2019 3,586 3 View
Is there a free Raman Spectra database that I can search for a set of given peaks? Thanks in advance for pointing the way.
23 December 2019 4,368 4 View
I am trying to fit O1s photoelectron data of SAM on top of ITO substrate using multiple peaks. I use software XPSPEAK41. My problem is: 1 of these peaks should be asymmetric. I am trying to use...
12 December 2019 8,203 2 View
Is there any physical or quantum explanation for this?
12 December 2019 8,457 2 View
I have an interesting case in which I have two convoluted crystallization peaks while cooling my polymer from the melt. Both peaks are forming the same crystal polymorph; the dual Tc represents...
06 December 2019 6,097 1 View
I’m trying to evaluate the thermal behavior of geopolymers in the range of 25 – 1000 °C by means of a LINSEIS STA PT 1600 - Simultaneous Thermal Analysis (TGA+DSC), which use the default software...
06 December 2019 3,747 1 View
In theory, the occurrence of two melting peaks could be attributed to the formation of different types of crystals, in a DSC curve. Is lack of interfacial adhesion an implication of this...
05 December 2019 5,211 3 View
i have analyzed samples using XRD, i got peaks with a slight peak shift for pure and doped material. no any addition peak was found. just XRD is enough to confirm the doping?
05 December 2019 2,103 3 View
In the test results of Raman spectroscopy, there are often many broad peaks that contain a lot of information. How can I correctly separate those peaks?
26 November 2019 2,769 3 View
I am new to NMR analysis. What I wish to do is an untargeted approach (i.e. no compound identification), using standardized spectral binning. This should be possible and in theory pretty...
20 November 2019 9,512 3 View
I'm confused about the relationship between the theta and 2theta values when using an XRD to scan materials. I did a scan on a wafer (not powder XRD) and found a 2theta peak at approximately 66...
18 November 2019 7,452 3 View
I ran fplc for ultrafiltered samples of muscle and viscera from a fish. Both peaks were extremely similar. Is it required that this denotes the same protein in both samples? Could someone advise...
15 November 2019 1,062 3 View
I already utilized XRD and FTIR tests, but the quality of peaks is not good enough to interpret. Apparently, XRD is not suitable for organic materials. So, what is the best way for analyzing these...
13 November 2019 9,301 4 View
When I read literature about peak fitting of Raman spectra of semi-conductor, the authors always use Lorentzian peak profiles. Is there a particular reason for using Lorentzian peaks?
13 November 2019 6,120 2 View
I tested the Titanium disc in FTIR after treating it with chemicals. But the absorbance peaks are showing down. I don't know what is wrong going on.
08 November 2019 2,113 5 View
Hello, to detect antibiotics residue in wastewater by UPLC- MS/MS, how to calculate the targets based on the chemical structure to set up method. I will detect 3 antibiotics. just need to put...
04 November 2019 9,733 1 View
Hello, guys! Recently I recorded NMR spectrum (1H) for one of the samples and found several peaks I can't recognize. Please, take a look, maybe someone has faced similar splitting. Sorry for...
01 November 2019 3,631 3 View
I'm measuring fatty acid species from serum with a Folch based extraction method followed by separation of neutral fatty acid species; cholesterol ester, triglyceride, free fatty acid,...
24 October 2019 9,502 4 View