防老剂Ａ学名Ｎ－苯基α－萘胺，是橡胶防老剂中的一种。皮肤接触可引起接触性皮炎还是可疑致癌物〔１〕。目前国内还未建立检测方法。本文探讨用测尘滤膜采集空气中防老剂Ａ，样品经乙醇洗脱，用实验室合成的重氮苯磺酸试剂显色测定。实验方法（１）原理：空气中防老剂Ａ... Antioxidant A scientific name N-phenyl-a-naphthylamine, is a rubber antioxidant. Skin contact can cause contact dermatitis or suspicious carcinogen [1]. At present, China has not established a test method. This paper discusses the use of dust filter dust collection Ager in the air, the sample eluted with ethanol, with laboratory synthesis of diazo benzene sulfonic acid reagent color determination. Experimental method (1) Principle: Antioxidant A in the air