Velmer A. Fassel

{{Short description|American chemist (1919–1998)}}

{{Infobox scientist

| name = Velmer A. Fassel

| image =

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| birth_date = {{birth date|1919|4|26|df=y}}

| birth_place = Frohna, Missouri

| death_date = {{death date and age|1998|3|4|1919|4|26}}

| death_place = San Diego, California

| nationality = American

| field = Chemist

| work_institutions = Iowa State University

Ames Laboratory

| alma_mater = Iowa State University
Southeast Missouri State College

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| known_for = ICP and ICP-MS

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}}

Velmer A. Fassel (26 April 1919 – 4 March 1998){{cite journal |author=Allan Maccoll |title=Velmer A. Fassel Memorial Issue |journal=Spectrochimica Acta Part B: Atomic Spectroscopy|volume=56|issue=7|pages=1035 |year=2001 |doi=10.1016/S0584-8547(01)00257-9}}{{cite journal|title=The Science of a Revolutionary Chemist and Spectroscopist Velmer A. Fassel|journal=Applied Spectroscopy|year=1998|first=Akbar |last=Montaser|volume=52|issue=11|pages=406A–426A|doi=10.1366/0003702981942834|bibcode=1998ApSpe..52..406M |doi-access=free}} was an American chemist who developed the inductively coupled plasma (ICP){{cite journal|title=Emission-spectrometric detection of the elements at the nanogram per milliliter level using induction-coupled plasma excitation|journal=Analytical Chemistry|year=1969|first=George W.|last=Dickinson|author2=Velmer A. Fassel |volume=41|issue=8|pages=1021–1024|doi=10.1021/ac60277a028}} and demonstrated its use as ion source for mass spectrometry.{{cite journal|title=Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace elements|journal=Analytical Chemistry|year=1980|first=Robert S.|last=Houk|author2=Velmer A. Fassel |author3=Gerald D. Flesch |author4=Harry J. Svec |author5=Alan L. Gray |author6=Charles E. Taylor |volume=52|issue=14|pages=2283–2289|url=https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1120&context=chem_pubs|doi=10.1021/ac50064a012}}