Efficient analysis of sodium chromate by combining phase-transfer headspace strategy and GC-TCD

This study developed a gas-evolving phase-transfer strategy for precise sodium chromate quantification. The analytical approach utilized the chemical reaction between sodium chromate and oxalic acid to generate measurable carbon dioxide, which was subsequently quantified via headspace gas chromatography equipped with thermal conductivity detector (HS-GC-TCD). Experimental validation confirmed the method's exceptional analytical performance in sodium chromate determination. The developed phase transformation technique established a robust and efficient protocol for sodium chromate assessment while simultaneously creating a framework for extending this analytical paradigm to other gas-evolving compounds.