空心阴极灯激发的微波等离子体炬原子/离子荧光光谱研究——钙的原子/离子荧光光谱  

Atomic/Ionic Fluorescence in Microwave Plasma Torch Discharge with Excitation of High Current and Microsecond Pulsed Hollow Cathode Lamp:Ca Atomic/Ionic Fluorescence Spectrometry

作　　者：弓振斌[1] 梁枫[2] 杨芃原[1] 金钦汉[2] 黄本立[1] 

机构地区：[1]厦门大学化学系,福建厦门361005 [2]吉林大学化学系,吉林长春130023

出　　处：《光谱学与光谱分析》2002年第1期63-66,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金 (2 92 351 1 0 Ⅰ;2 97351 60 );教育部博士点基金 (980 3840 3)资助课题

摘　　要：用强短脉冲供电技术的空心阴极灯作激发源、微波等离子体炬作原子 /离子化器 ,建立了原子 /离子荧光光谱实验装置。详细研究了微波等离子体功率、观察高度、空心阴极灯电流等因素对原子 /离子荧光信号强度的影响 ,测量了系统对Ca的原子A system of atomic and ionic fluorescence spectrometry in microwave plasma torch (MPT) discharge excited by high current microsecond pulsed hollow cathode Lamp (HCMP HCL) has been developed. The operation conditions for Ca atomic and ionic fluorescence spectrometry have been optimized. Compared with atomic fluorescence spectrometry (AFS) in argon microwave induced plasma (MIP) and MPT with the excitation of direct current and conventional pulsed HCL, the system with HCMP HCL excitation can improve AFS and ionic fluorescence spectrometry (IFS) detection limits in MPT atomizer and ionizer. Detection limits (3sigma) with HCMP HCL-MPT-AFS/IFS are 10.1 ng(.)mL(-1) for Ca I 422.7 nm, 14.6 ng(.)mL(-1) for Ca II 393.4 nm, and 37.4 ng(.)mL(-1) for Ca II 396.8 nm, respectively.

关 键 词：微波等离子体炬 离子荧光光谱 钙 原子荧光光谱 检出限 空心阴极灯 

分 类 号：O614.231[理学—无机化学] O657.3[理学—化学]