permanent modifier

in electrothermal atomic absorption spectroscopy
https://doi.org/10.1351/goldbook.08517
Substance added together with the sample or standards in electrothermal atomic absorption spectroscopy that is refractory, or forms a refractory species (e.g., a carbide), and thus does not need to be renewed for several atomization cycles.
Note:
This is a particular type of chemical modifier for electrothermal AAS.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 727 [Terms] [Paper]
Citation: 'permanent modifier' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08517 RIS BibTex EndNote
Div. VTextXMLJSON