Chromatograms show that GC-PDHID shows good HCHO separation with high response and long-range linearity.The method is suitable to measure the unregulated emissions of the gasoline engines.

• 色谱图显示甲醛分离度好，PDHID检测器对甲醛的响应好，灵敏度高，线性好，证明这种方法可以用于检测成分复杂的发动机尾气中的甲醛和甲醇。