用低功率微波热雾化器与十字交叉气动雾化器作为ICP-AES进样装置的比较  

Comparison of a Low Microwave-powered Thermospray Nebulizer and a Pneumatic Nebulizer for ICP-AES

作　　者：丁兰[1] 金海燕[1] 刘淼[2] 梁枫[2] 郇延富[2] 曹彦波[2] 张寒琦[2] 金钦汉[2] 

机构地区：[1]吉林大学分析测试中心 [2]吉林大学化学系,长春130023

出　　处：《高等学校化学学报》2000年第11期1661-1663,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金! (批号 :2 9735 16 0 )资助

摘　　要：The analytical performance of two sample introduction systems, a low microwave powered thermospray nebulizer and a pneumatic nebulizer, coupled to an inductively coupled plasma atomic emission spectrometer, was compared. Several parameters including the sample uptake rate, the carrier gas flow rate and the observation height(above the load coil) were optimized and compared. Under the optimized conditions, the background equivalent concentration of Mn 257 610 nm, memory effect, HCl concentration effect on emission intensity of some selected elements, detection limits(DLs) and relative standard deviation(RSD) for Cd, Co, Cr, Mn, La with either nebulizer were studied. The DLs obtained with MWTN are lower than those with PN, but the RSDs are worse with MWTN than with PN.The analytical performance of two sample introduction systems, a low microwave powered thermospray nebulizer and a pneumatic nebulizer, coupled to an inductively coupled plasma atomic emission spectrometer, was compared. Several parameters including the sample uptake rate, the carrier gas flow rate and the observation height(above the load coil) were optimized and compared. Under the optimized conditions, the background equivalent concentration of Mn 257 610 nm, memory effect, HCl concentration effect on emission intensity of some selected elements, detection limits(DLs) and relative standard deviation(RSD) for Cd, Co, Cr, Mn, La with either nebulizer were studied. The DLs obtained with MWTN are lower than those with PN, but the RSDs are worse with MWTN than with PN.

关 键 词：气动雾化器 微波热雾化器 ICP-AES 进样装置 

分 类 号：O657.31[理学—分析化学]