氢化物发生-原子荧光光谱法测定小麦粉中的砷  

Determination of As in Wheat Flour by Atomic Fluorescence Spectrometry with Hydride Generation

作　　者：赵丽琴[1] 王恒根[2] 

机构地区：[1]黑龙江北大荒农业股份有限公司七星分公司 [2]农业部农产加工品质量监督检验测试中心,黑龙江省大庆市163319

出　　处：《光谱实验室》2008年第5期943-946,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：归纳了氢化物发生-原子荧光光谱法测定粮食样品中砷的适宜条件,包括载液酸度、介质浓度和还原剂的加入时间对测定结果的影响,选择仪器的最佳工作条件及氢化物发生条件。结果表明:适宜的载液为5.0%HCl;KBH4适宜的浓度范围为1.0%—2.0%;加入还原剂的适当时间4—8s。方法线性范围为0—0.150μg·g-1,相关系数r=0.9972,试验回收率95.54%—97.33%。The amount of As in food was determined by hydride generation-atomic fluorescence spectrometry under the appropriate conditions including liquid acidity, medium concentration and added time of reducer on the measured results. The appropriate conditions of instrument and hydride reaction were selected. The concentration of contained liquid is 5.0% HCl and 1.0%-2.0% KBH4. The time for adding reducing agent is 4-8s. The Linear scope is 0-0. 150μg · g^-1 with correlation coefficient r=0.9972 and the recovery of 95. 55%-97.34%.

关 键 词：适宜条件 氢化物发生-原子荧光光谱法 砷 小麦粉 

分 类 号：O657.31[理学—分析化学]