ISO 6401:2008规定了测定氯乙烯和复合材料均聚物和共聚物树脂中氯乙烯单体的方法。该方法基于样品溶解和顶空气相色谱。可测定0.1 mg/kg至3.0 mg/kg范围内的氯乙烯浓度。
“干法”适用于PVC树脂,但不适用于复合材料,在行业内广泛用于内部测定。基于该方法的单独国际标准正在制定中。
ISO 6401:2008 specifies a method for the determination of vinyl chloride monomer in homopolymer and copolymer resins of vinyl chloride and compounded materials. The method is based on sample dissolution and headspace gas chromatography. Concentrations of vinyl chloride in the range 0,1 mg/kg to 3,0 mg/kg can be determined.
A "dry method", suitable for PVC resins but not compounded materials, is widely used within the industry for in-house determinations. A separate International Standard based on this methodology is under development.