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本文报道了空气中甲酸的气相色谱测定法。空气样品用碳酸钠硅胶采集,5％硫酸溶液解吸,其解吸效率为78～87％。甲酸经酯化后用10％FFAP—6201色谱柱分离,氢火焰离子化检测器检测,检测限为1μg/0.1ml。甲酸在碳酸钠硅胶上置室温至少可以保存7天。
This paper reports the determination of formic acid in air by gas chromatography. Air samples were collected on silica gel and desorbed in 5% sulfuric acid solution. The desorption efficiency was 78-87%. Formic acid esterified with 10% FFAP-6201 column separation, hydrogen flame ionization detector detection, detection limit of 1μg / 0.1ml. Formic acid was stored on soda ash silica gel for at least 7 days at room temperature.