目的建立微波消解-原子荧光法测定头发中的铅检测方法。方法用微波消解头发,在选定的条件下,自动进样系统进样,用原子荧光光度计测定样品中的铅。结果该方法测定铅,在0～50ng/ml时,荧光强度与浓度成直线关系,方法的相对标准偏差在3.4%～5.9%,方法的回收率在92.0%～107%。结论该方法操作简便,线性范围广,准确度高,精密度好,适宜用于测定头发中的铅。 Objective To establish a method for the determination of lead in hair by microwave digestion - atomic fluorescence spectrometry. Methods Microwave was used to digest the hair. Under selected conditions, the sample was injected into the autosampler, and the lead in the sample was determined by atomic fluorescence spectrophotometer. Results The method for the determination of lead at 0 ~ 50ng / ml, the fluorescence intensity and concentration of a linear relationship between the relative standard deviation of the method in 3.4% ~ 5.9%, the recovery rate of 92.0% ~ 107%. Conclusion The method is simple and easy to operate with wide linear range, high accuracy and good precision, which is suitable for the determination of lead in hair.