采用微波消解技术,将电子电气产品中的塑料样品用硝酸-氟硼酸-过氧化氢在210℃的温度下加热约1h溶解后,用全谱直读DUO-ICP-AES同时测定塑料中铅、镉、铬和汞,方法的检测限为0.0015~0.011μg/m l,该方法的回收率和精密度分别为91.2%~100.5%和0.45%~3.18%,2h内实际样品的检测结果较为满意。该方法快速简便,可应用于电子电气产品塑料中的铅、镉、铬和汞日常检验。 Microwave digestion technology, the plastic samples of electrical and electronic products with nitric acid - fluoroboric acid - hydrogen peroxide heated at 210 ℃ for about 1h dissolved, with full spectrum direct reading DUO-ICP-AES simultaneous determination of plastic in the lead, The detection limit of the method was 0.0015 ~ 0.011μg / ml. The recoveries and precision of the method were 91.2% ~ 100.5% and 0.45% ~ 3.18%, respectively. The results of real samples in 2h were satisfactory. This method is fast and easy and can be applied to the routine inspection of lead, cadmium, chromium and mercury in plastic of electrical and electronic products.