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采用气相色谱法对空气中正丁烯的含量进行了测定，检测限为纳克级，浓度在0．951～7．608mg／m3范围内呈线性关系，变异系数小于10％，加标回收率在104％～97％之间。
The content of n-butene in the air was determined by gas chromatography with a detection limit of nanograms. The linear range was 0.951 ~ 7.608 mg / m3 with the coefficient of variation less than 10%. The recoveries were in the range of 104% ~ 97% between.