This paper demonstrated a simple and rapid approach for the determination of lead dioxide in minium using a headspace gas chromatographic (GC) technique. This new approach was based on the measurement of carbon dioxide from the redox reaction between lead dioxide and oxalic acid in a sealed headspace vial. The obtained results indicated that the new approach had good measurement accuracy (relative errors ≤8.71%) and precision (RSD ≤2.86%). Moreover, the limit of quantification (LOQ) and limit of detection (LOD) for this new approach were respectively 0.34% and 0.10%, and the recoveries ranged from 97.9 to 101.7%. The new approach is low-cost and reliable, which has potential for use in the analysis of lead dioxide in minium and related products.

中文翻译：

---

一种简单快速的顶空气相色谱法测定微量二氧化铅的方法。

本文展示了一种使用顶空气相色谱（GC）技术测定微量二氧化铅的简单，快速的方法。这种新方法是基于在密封的顶空样品瓶中测量二氧化铅与草酸之间的氧化还原反应而产生的二氧化碳。所得结果表明，该新方法具有良好的测量精度（相对误差≤8.71％）和精度（RSD≤2.86％）。此外，这种新方法的定量限（LOQ）和检出限（LOD）分别为0.34％和0.10％，回收率在97.9％至101.7％之间。这种新方法成本低廉且可靠，在分析最小和相关产品中的二氧化铅方面具有潜力。