摘要
本文设计了一种简易的加热／冷凝去溶装置，并使之与流动注射（ＦＩ）－柱预富集－ＩＣＰ－ＡＥＳ体系联接。研究了在不同情况下进样体积、去溶温度、载液流速等对分析信号强度、检出限和精密度的影响，并与非去溶体系相比较。结果指出，去溶温度为１２０℃时，体系的去溶效率为３４．２％，进样效率为７２．５％；方法的检测限比非去溶体系改善近７倍。实验结果还表明，ＦＩ－柱预富集－去溶ＩＣＰ－ＡＥＳ体系获得了ｎｇ／ｍｌ～亚ｎｇ／ｍｌ级的检出限，可望用于超痕量组分的测定。
A desolvation system with a heating and condensing device was designed in our laboratory, Which was incorporated with on-line column preconcentration and flow injection for ICP-AES analysis.Several experimental parameters such as sampling volume,carrier flow-rate and desolvating temperature were optimized.Compared to the non-desolvation system,the efficiency of desolvation and sampling were 34.2% and 72.5% respectively at the desolving temperature of 120℃;the signal intensity was improved by 7 times with the detection limits of ng/ml-sub ng/ml level.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1994年第4期71-76,共6页
Spectroscopy and Spectral Analysis
