摘要
通过对热解涂层管涂钨的方法,克服硅元素在原子化过程中的吸附问题。利用石墨炉直接进样原子吸收光谱法测定汽油中的硅含量,在标准曲线0～400μ/L范围内线性相关系数达到0.999上,对试样进行样品前处理简便,检测下限低,分析速度快。通过多次测定验证方法的的精密度,相对标准偏差小于5%,使用加标回收的方法验证了方法的准确性,加标回收率可到92.0%～116.2%。
The adsorption of silicon in atomization process was overcome by coating tungsten on the pyrolysis coated tube.The determination results showed that the linear correlation coefficient could be larger than 0.999 in the concentration range for the silicon standard solutions of 0 — 400μ/L.The sample pretreatment was simple,the detection limit was low,and the analysis was fast.The relative standard deviations were no larger than 5%.The accuracy of the method was verified by the spiked recovery method.The spiked recoveries were in the range of 92.0%—116.2%.
作者
张嘉璇
赵海洋
Zhang Jiaxuan;Zhao Haiyang(PetroChina Northwest Sales Quality Measurement Management Department,Urumq 830068,China;PetroChina Henan Sales Branch,Zhengzhou 450001,China)
出处
《分析仪器》
CAS
2018年第6期96-100,共5页
Analytical Instrumentation
关键词
石墨炉
汽油
硅
Graphite furnace
Gasoline
Silicon
