摘要
在150℃、800W的消解条件下,用硝酸对三醋酸纤维素进行消解,空气-乙炔火焰原子吸收光谱法测定三醋酸纤维素中铜和铁的含量,测定条件为:光谱通带为0.4nm、灯电流为3.0mA、燃烧器高度为6.0mm、乙炔流量为2.0L·min-1。结果表明,测定样品中铜和铁含量分别为1.15、5.63μg.g-1。该法的加标回收率在97.0%—100.6%范围内,相对标准偏差均小于1.0%。适用于三醋酸纤维素中铜和铁的质量控制和样品系统分析。
The copper and iron in cellulose triacetate were digested with microwave under the condition of temperature of 150℃ and power of 800W with nitric acid and determined by air-C2H2 flame atomic absorption spectrometry. The optimal conditions were spectral bandwidth of 0. 4nm,the current of lamp of 3.0mA, burner height of 6.0ram and the acetylene flow of 2. 0L · min^-1. The contents of copper and iron in cellulose triacetate are 1.15μg · g^-1 and 5.63μg · g^-1 respectively. The standard adding recovery is in the range of 97.0%-100. 6%. The relative standard deviation is less than 1.0%. The method fully suited to control the contents of copper and iron in cellulose triacetate and was used in the analysis of sample system with good results.
出处
《光谱实验室》
CAS
CSCD
北大核心
2010年第1期202-205,共4页
Chinese Journal of Spectroscopy Laboratory
关键词
微波消解
原子吸收光谱法
三醋酸纤维素
铜
铁
Microwave Digestion
Atomic Absorption
Cellulose Triacetate
Copper
Iron