水样品中少量有机溶剂对氩电感耦合等离子体光谱法的影响。
Influence of small amounts of organic solvents in aqueous samples on argon inductively coupled plasma spectrometry.
作者信息
Olesik J W, Moore A W
机构信息
Department of Chemistry, Venable Laboratory, University of North Carolina, Chapel Hill 27599-3290.
出版信息
Anal Chem. 1990 Apr 15;62(8):840-5. doi: 10.1021/ac00207a014.
The presence of organic solvents in aqueous samples in concentrations as low as 0.1% by volume had a large effect on emission and fluorescence signals. Both atom and ion emission signals were depressed when organic solvents were present. In contrast, Sr II fluorescence intensities were enhanced by up to a factor of 3.5 when the sample contained 2% (v/v) organic solvent. More ions were produced when the sample contained organic solvent. However, the fractions of atoms and ions that were excited and emitted light decreased. Ar and H emission intensities can be used as diagnostic signals to warn the operator when plasma conditions have changed due to the presence of organic solvents.
水样品中有机溶剂的体积浓度低至0.1%时，对发射信号和荧光信号有很大影响。当存在有机溶剂时，原子发射信号和离子发射信号均受到抑制。相比之下，当样品中含有2%（v/v）的有机溶剂时，Sr II荧光强度增强了3.5倍。当样品中含有有机溶剂时会产生更多离子。然而，被激发并发光的原子和离子的比例降低了。当由于有机溶剂的存在导致等离子体条件发生变化时，Ar和H发射强度可用作诊断信号以警告操作人员。
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