氢化物发生-原子荧光光谱法自动进样快速测定烟道灰中硒的应用研究

Application Study on Rapid Determination of Se in Chimney Ash with Automatic Sampling by Hydride Generation-Atomic Fluorescence Spectrometry

中文关键词:  HG-AFS,快速测定,烟道灰,硒

英文关键词:HG-AFS,rapid determination,chimney ash,selenium

中文摘要:

      应用常规湿法消解与微波高压溶样2种不同的样品分解方法，研究了氢化物发生-原子荧光光谱法(HG-AFS）测定烟道灰中的硒.硒标准系列浓度在0.000~0.024 mg/L范围内与荧光强度具有良好的线性关系，相关系数为0.999 8. 方法检出限为0.007 5 mg/kg,相对标准偏差在0.87%~1.30%之间，加标回收率为98%~105% ，实验证实方法具备灵敏、快速、准确等优点.亦为回收利用烟道灰中的硒提供了科学依据.

英文摘要:

      With two different sample decomposition methods of conventional wet digestion and microwave high pressure dissolution method, the determination of Se in chimney ash by HG-AFS is studied. Se standard concentration has good linear relationship with fluorescence intensity in the range of 0.000~0.024 mg/L,and corelative coefficient is 0.999 8. Detection limit of the method is 0.007 5 mg/kg, relative standard deviation is between 0.87%~1.30%,and recovery is 98%~105%.This method has the advcontages of high sensitivity,rapidity and accuracy.It provides scientific basis for recycling use of selenium in chimney ash.