【摘要】 用微波等离子体炬原子发射光谱法(MPT-AES)同时测定未使用过的航空润滑油中铁、银和镍的方法。详细考察了微波功率、载气流量、工作气流量、氧屏蔽气压力等实验参数对铁、银和镍发射强度的影响,并进行了系统优化。测得铁、银和镍的检出限分别为21.94ng/mL0、.36ng/mL9、.82ng/mL,线性范围分别为0.1~100μg/mL、0.001~8μg/mL、0.05~8μg/mL,各元素测定结果的相对标准偏差均小于3.95%,回收率在93.1%~107.4%之间。更多还原

【Abstract】 A method for the determination of trace ele- mental iron, silver and nickel in aviation lubricating oil by microwave plasma torch-atomic emission spectrometry was investigated. Comprehensive experimental parame- ters( including microwave power, support gas flow rate, carrier gas flow rate and oxygen shield gas flow rate) were obtained and optimized systematically. All of the RSDs were less than 3. 95%, and the recoveries of these elements were around 93.1%~107.4%. The re- sults show that it is an available method of microwave plasma torch-atomic emission spectrometry for the deter- mination of trace elements in aviation lubricating oil. It is accurate, rapid, simple operation, and low cost main- tenance.更多还原