Practical Quantitative Analysis - How to Optimize the Accuracy of your Data скачать в хорошем качестве

Practical Quantitative Analysis - How to Optimize the Accuracy of your Data

There are often questions about how to a set up an EDS collection to achieve the “best” data, but the best data is usually dependent both on the analytical goals and the characteristics of the sample. Often, there is no single correct answer. The analyst needs to consider a variety of factors when setting up an analysis to achieve the optimal results. For example, it’s hard to recommend a collection time for a typical EDS analysis because a quick collection time of 5-10 seconds is only realistic on a sample with major and minor elements, but a longer collection time would be more appropriate for samples with trace elements or low count rates. And while a sample with a trace amount of an element may need 100 seconds or longer collection time to achieve minimum detection limits, this does not necessarily improve the quantification accuracy of major elements. In this webinar, we explore the relationship between collection time, count rate and resolution, and how it affects the data accuracy and error interval. Experimental data also shows the influence of geometry settings, sample surface quality, background adjustments, and peak overlaps and the quantification results.