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‘Total Workflow’ Sample Preparation Approach to optimize elemental analysis

As the performance of atomic spectroscopy techniques for elemental analysis has improved over the past several decades, there has been a concurrent need for improvements in sample preparation. While the sample digestion step appropriately draws the most attention in the preparation process, there are other important steps in the sample preparation workflow that also impact the outcomes of the laboratory, some of which may be unexpected in scope and scale. We present a ‘total workflow’ approach to sample preparation and propose ways to improve key aspects of elemental analysis such as lab...

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ENSURING SAFE DIGESTIONS

Closed-vessel microwave digestion relies on sealed reactors to contain the elevated pressures required to reach the high temperatures essential to quality digestions. Vessels made of PTFE-TFM offer superior chemical compatibility but suffer from poor physical strength at high temperature. Therefore, vessels are surrounded by safety shields made of PEEK (Polyether Ether Ketone) that help to physically hold the pressure in the vessel. The safety shields fundamentally contribute to the safety of the digestion process, so it is essential that they are in good conditions and...

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