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建立了测定居室空气中甲醛的衍生气相色谱法。方法的检测限为０．０２ｍｇ／Ｌ（水溶液），当采气量为１０Ｌ时，最低检出浓度为０．０１ｍｇ／ｍ３（居室空气），变异系数为４．１％～６．５％，回收率为７１．０％～９０．４％。
A gas chromatography was developed for the determination of formaldehyde in room air. The detection limit of this method was 0.02mg / L (aqueous solution). The minimum detectable concentration was 0.01mg / m3 (room air) when the gas production was 10L and the coefficient of variation was 4.1% ~ 6.5% The rate was 71.0% ~ 90.4%.