Even though fusion is the best way to prepare samples prior to XRF analysis, some people are still annoyed with some points related to this technique. Here are two customer pain points explained.
1 – High accuracy of the weighing step
It’s very important to know the exact weights of the sample and flux (sample-to-flux ratio) and adequately apply X-ray fluorescence (XRF) correction to obtain great analytical results. In fact, the weighing method, tolerance accepted and analytical method to obtain the ratio will affect the quality of the results given by the spectrometer. The weighing method must be carefully selected during the application development stage depending on the minimal precision required during the analysis of the disk.
Note that environmental conditions also impact the weighing step. In fact, weighing must be performed on a stable table in a dry and clean laboratory. Drafts must also be avoided as much as possible since they tend to falsify weighing data.
2 – The importance of fume hoods
Did you know that fusion can release gases that are bad for health? The instrument itself will not release any toxic vapors, but the samples and their preparation might. For example, fusing oxidants can result in emanations of COx or NOx (found in acid rains), which are dangerous when inhaled.
Here are some other examples of elements that can be found in certain types of samples:
Arsenic (As), Antimony (Sb), Tellurium (Te), Fluorine (F), Chlorine (Cl), Bromide (Br), Iodine (I), Sulfur (S), Mercury (Hg)
The list is not exhaustive, but keep in mind that these metal vapors are harmful. It is then necessary to have adequate ventilation in the lab to evacuate toxic gas and protect operators.
You’re experiencing other concerns or pains while fusing your samples prior to XRF analysis? Contact our experts today so they can find solutions adapted to your needs.
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