Methods for the sampling and analysis of indoor air, Method 6: Determination of formaldehyde - Impinger sampling - Chromotropic acid method
室内空气取样和分析方法 方法6:甲醛的测定撞击式取样变色酸法
Sets out a spectrophotometric method for the determination of formaldehyde in indoor air using impinger collection. This method is applicable to indoor air in which the expected formaldehyde concentration is within the range of 0.01 ppm to 1 ppm. Sampling periods of 1 h to 4 h are normally used.