摘要
报道了用于微波等离子体炬原子发射光谱仪(MPT-AES)的新型注射泵-超声雾化器联用进样系统, 考察了影响该系统性能的因素. 分别用气动雾化进样系统和注射泵-超声雾化联用进样系统进样, 测定了Cd, Cu, Mg, Ca和Na等5种元素、浓度均为1×10-4%的混合溶液. 结果表明, 注射泵-超声雾化联用进样系统所得的谱线强度是气动进样所得谱线强度的2～3倍, 而超声雾化进样的检出限比气动雾化进样小2～10倍, 且超声雾化进样系统的记忆效应较强, 所需清洗时间较长.
The feeding-sample system of MPT-AES is pneumatic nebulization system, but its efficiency is not good. A new-built injector pump-ultrasonic nebulizer combination feeding-sample system has been designed. Its performance was tested and compared with that of the pneumatic nebulization system. It can be concluded that the new-built feeding-sample system can increase the spectral line intensity about 23 times and decrease the detection limit about 210 times. Moreover, this new-built system can reduce the time taken by washing the sample cell from 30 min or so to about 10 min.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2005年第4期502-506,共5页
Journal of Jilin University:Science Edition
