Would you recommend the M4 Tornado from Bruker or the Orbis PC from EDAX?

More Jurgen Schnellrath's questions See All

Is there a difference in the dry weight obtain after dryfreezing (lyofilization) and dry weight obtained after oven-drying?

Looking to obtain the dry weight of artemia. I will use eppendorf as sampleholder. Will the weight of the eppendorf be influenced by the lyofilization? thank you.

13 July 2016 5,801 4 View

Does someone has an idea or a reference on the fat content of artemia nauplii and enriched artemia?

For some analyses I would like to estimate the fat content of enriched artemia; This probably differs with which commercial product used, but any info can help. thank you

12 April 2016 5,257 2 View

Why does my protein refolded to beta sheet during thermal denaturation analysis?

Hi! So i attempted to understand a novel protein behavior towards heat application by analyzing its secondary structure change. I subjected the protein to a thermal denaturation analysis using...

06 August 2024 1,989 3 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

Do you think in which age of geology laterites can be more than other ages in Iran?

I want to know more about laterites in Iran.

31 July 2024 8,219 2 View

Mossbauer spectroscopy Co0.6Mn0.4Fe2O4 MNPs?

Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.

31 July 2024 9,140 2 View

How to calculate conductivity using Electrochemical Impedance Spectroscopy's Nyquist plot?

Hello everyone, I am new to this characterization but watching videos on youtube I have already plotted a Nyquist plot (Z' and -Z'') and already fitted models on my material using Zsim. But now I...

29 July 2024 1,376 0 View

With attention to past my experiences on field geology I think any mineral ores can be in any geology area. Are you agree with me?

I want to know more about ore deposits in world.

27 July 2024 3,827 4 View

Why semicircle of nyquist plot is not complete?

While I am doing HER, I noticed that nyquist plots of Electrochemical Impedance Spectroscopy (EIS) is not complete. Will it affect for the Linear Sweep Voltametry (LSV) data? However, I can found...

26 July 2024 7,542 4 View

What is single absorption ESR spectroscopy ?

In the context of Electron Spin Resonance (ESR) spectroscopy, under what conditions is an absorption spectrum considered to be a single absorption spectrum?

25 July 2024 2,325 1 View

Can we fit a gaussian Fit on a LIBS Peak ?

Though much literature suggests fitting a Voigt profile on a LIBS peak, is it also possible to fit a Gaussian profile on the LIBS peak? I have 204 spectra files, and I am building a pipeline for...

23 July 2024 6,127 1 View

What binder would be the best choice to modify glassy carbon electrode with a 2D Material like Graphene or MXene?

I am trying to drop cast 2D Materials on Glassy Carbon Electrode for Cyclic voltametry and EIS purpose. What would be best binders to use?

23 July 2024 5,776 2 View

Jurgen Schnellrath

Kann mich noch gut erinnern, Franz! Wir haben uns schon für das Gerät von EDAX entschieden. Es ist ein EDXRF der eine sehr kleine Fläche analysieren kann (bis zu 25 Mikrometer klein), deswegen Mikro-Fluoreszenz. Wir werden quantitativ mit Kalibrationskurven arbeiten für die Bestimmung des Gold-Gehaltes von Schmuck. Gruss, Jurgen.

Schwerpunkt Goldgehalt an Schmuck, aber auch Identifizierung von sehr kleinen Edelsteinen, gefasst oder auch nicht. Einschlüsse, die sich an der Oberfläche befinden und grösser als 25 um sind, können damit auch identifiziert werden.