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Title: Atomic emission spectrometer/spectrograph for the determination of barium in microamounts of diatom ash

Abstract

The development and routine application of a method for the determination of trace levels of barium in microsamples (5-10 mg) of diatom ash is described Acid-dissolved lithium metaborate fusion melts of ash samples are analyzed using a spectrometer/spectrograph equipped with a dc argon plasma jet excitation source and an echelle diffraction grating. Sample, standard, and blank solutions are buffered by lithium contributed by the flux, to a degree sufficient to reduce matrix effects to acceptable levels. Previous barium determinations by other analytical techniques, on seven interlaboratory reference materials, have been used to establish the accuracy of our results. The average relative standard deviation for the instrumental analyses was 0.07. Using recommended instrument settings, moreover, the lowest concentration of barium visible in synthetic standard solutions lies just below 2 ..mu..g/L, which is equivalent to 2 ..mu..g/g in the ash.

Authors:
;
Publication Date:
Research Org.:
Woods Hole Oceanographic Inst., MA
OSTI Identifier:
7213345
Resource Type:
Journal Article
Resource Relation:
Journal Name: Anal. Chem.; (United States); Journal Volume: 49:7
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BARIUM; EMISSION SPECTROSCOPY; DIATOMS; CHEMICAL ANALYSIS; ASHES; BUFFERS; LITHIUM; STANDARDS; TRACE AMOUNTS; ALGAE; ALKALI METALS; ALKALINE EARTH METALS; BIOMASS; ELEMENTS; ENERGY SOURCES; METALS; PLANTS; RENEWABLE ENERGY SOURCES; RESIDUES; SPECTROSCOPY; 400104* - Spectral Procedures- (-1987)

Citation Formats

Bankston, D.C., and Fisher, N.S.. Atomic emission spectrometer/spectrograph for the determination of barium in microamounts of diatom ash. United States: N. p., 1977. Web. doi:10.1021/ac50015a038.
Bankston, D.C., & Fisher, N.S.. Atomic emission spectrometer/spectrograph for the determination of barium in microamounts of diatom ash. United States. doi:10.1021/ac50015a038.
Bankston, D.C., and Fisher, N.S.. Wed . "Atomic emission spectrometer/spectrograph for the determination of barium in microamounts of diatom ash". United States. doi:10.1021/ac50015a038.
@article{osti_7213345,
title = {Atomic emission spectrometer/spectrograph for the determination of barium in microamounts of diatom ash},
author = {Bankston, D.C. and Fisher, N.S.},
abstractNote = {The development and routine application of a method for the determination of trace levels of barium in microsamples (5-10 mg) of diatom ash is described Acid-dissolved lithium metaborate fusion melts of ash samples are analyzed using a spectrometer/spectrograph equipped with a dc argon plasma jet excitation source and an echelle diffraction grating. Sample, standard, and blank solutions are buffered by lithium contributed by the flux, to a degree sufficient to reduce matrix effects to acceptable levels. Previous barium determinations by other analytical techniques, on seven interlaboratory reference materials, have been used to establish the accuracy of our results. The average relative standard deviation for the instrumental analyses was 0.07. Using recommended instrument settings, moreover, the lowest concentration of barium visible in synthetic standard solutions lies just below 2 ..mu..g/L, which is equivalent to 2 ..mu..g/g in the ash.},
doi = {10.1021/ac50015a038},
journal = {Anal. Chem.; (United States)},
number = ,
volume = 49:7,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1977},
month = {Wed Jun 01 00:00:00 EDT 1977}
}