Some metal oxides are called refractories, it means that they are stable at high temperatures. But.... do they also resist dilute acid or base conditions in aqueous media ??
I'm using DSC 131evo, the heat flow is given by uV, and when performing peak area calculation, the heat is given by uV.s/mg. How to change this unit to J/mg or J/mol.
09 October 2018 8,148 1 View
One of the characterizations of synthesized nano-particles is particles size distribution. But what method or technique is the best ??
31 December 2017 538 7 View
Complete isotherms (Adsorption - desorption) of N2 was done using QuantaChrome iQC 6.... some of the data results are said to be non-monotonic pressure, what is the meaning of this message and...
11 December 2017 9,824 2 View
As it is known, He gas is more expensive than Ar gas, and both are inert gases. So is it possible to use Ar gas instead of He as the carrier gas for CHN analyzer model PerkinElmer 2400 ??
11 December 2017 8,112 1 View
We have a CHN-S-O analyzer from PerkinElmer, we have this problem that the combustion column breaks down ( at the surface of the packing ) after 2-3 run.
06 July 2017 2,722 0 View
Using AutoSorb iQc (BET - gas adsorption ) in the determination of SSA and pore size of powder materials a first step is out gasing which is done under ultra-vacuum and high temp. of about 300C,...
01 February 2017 4,971 4 View
Scientific glass blowing is used to make discharge lamps or metal electrodes
31 December 2014 1,565 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 What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...
06 August 2024 1,367 3 View
During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...
06 August 2024 726 3 View
Dear readers, Thanks for your attention. I am wondering about the health economic problem of quantifying the value of interventions which a) prevent, b) improve symptom profile and c) ultimately...
05 August 2024 3,246 1 View
How Social Media Affects Your Mental Health
04 August 2024 6,961 3 View
Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...
04 August 2024 5,974 3 View
Why BaO (s) + H2O(l) ---> Ba 2+(aq) + 2 OH - (aq) if Oxygen loves owning all the electrons, why would it bind to hydrogen which competes with Oxygen for electron ownership more so than...
03 August 2024 5,392 1 View
I imagine the battery drives the graphite into a carbocation, then chloride is oxidized to donate the electron to the carbocation, but what pushes the lost electrons of chloride to be shared...
03 August 2024 5,384 0 View
How to calculate the molar proportions of the oxides from the XRF analyses?
02 August 2024 2,565 2 View