A capillary gas chromatographic method has been developed for determination of N,N-dimethyl-formamide in industrial waste air and waste water. An HP-INNOWAX column was employed. Quantitative analysis was carried out by means of hydrogen flame ionization detector ( FID). The results indicated that the coexistence of acetone, ethanol and acetyl acetone had no interference with the test. Good linearity was obtained between the concentration range of 0.939 mg/L ~ 75.1 mg/L. The detection limits come to be 0.47 mg/L for industrial waste water, 0. 16 mg/m3 for out of control exhaust gas and 0. 31 mg/m3 for stationary source emission. RSD of standard solution parallel determination ranged from 1. 9% to 2. 2%. Spiked recoveries of waste water sample ranged from 94% to 97%.%采用HP-INNOWAX毛细管柱、气相色谱氢火焰离子化检测器测定工业废气和废水中的N,N-二甲基甲酰胺,可能共存的丙酮、乙醇和乙酰丙酮均对测试无干扰.方法在0.939 mg/L～75.1 mg/L范围内线性良好,对工业废水、无组织排放工业废气和有组织排放工业废气中N,N-二甲基甲酰胺的检出限分别为0.47 mg/L、0.16 mg/m3和0.31 mg/m3,标准溶液平行测定的RSD为1.9％ ～2.2％,废水样品加标回收率为94％～ 97％.
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