氢化物－无色散原子荧光法测定人发中的铅

Determination of Lead in Human Hair by Hydride Generation-Atomic Fluorescence Spectrometry

本文研究了氢化物－无色散原子荧光法测定人发中的铅。仔细检测了各种共存离子引起的干扰。仅铜（６０μｇ／ｍＬ）引起负误差。增加铁氰化钾的用量，克服了铜的干扰。方法的检出限为０．００１５μｇ／ｍＬ，相对标准偏差４．６６％，回收率在９５％－９８％范围。本法快速、灵敏。已用于人发样品的测定，得到满意结果。

y hydride generation-nondispersive atomic fluorescence spectrometric method has been developed for the determination of lead in human hair. Interference caused by diverse ions have been carefully examined, only Cu(60 μ g/mL) cause a negetive error. The interference of Cu is overcome by increasing the amount of patassium ferricyanide. The detection limit 0.0015 μg/mL, relative standard deviation 4.66% and recovery was in the range 95%-98. The method is rapid,rapid,sensitive and has been used for the determination of human hair sample with satisfactory results.