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Boiling problem in total phosphorus analysis of PO clear solution

2021-09-07View Original

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When analyzing the total phosphorus content in PO filtrate, it boils over during gentle heating on an electric hot plate, causing the sample residues to splash out of the conical flask and affecting the analysis results. To prevent bumping, can the sample be filtered through filter paper first, or should heating be done in a water bath? The PO clear solution contains a small amount of calcium hydroxide.

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