The procedures manual of the Environmental Measurements Laboratory. Volume 2, 28. edition Page: 89 of 259
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M-03, Vol. 11 Rev. 0
HASL-300, 28th Edition February 1997
SPECIAL APPARATUS
1. Atomic absorption spectrometer - Perkin Elmer Model 5000 equipped with a 10.5-cm
single-slot air/acetylene atomizer burner or equivalent.
2. Acetylene source.
SPECIAL REAGENTS
1. Potassium stock solution (100 pg mL-1) - weigh out 0.1907 g of KCl and dissolve in
1 L of water.
2. Doubly-deionized water must be used throughout for sample preparation and analysis.
SAMPLE PREPARATION
1. Clean all glassware by rinsing several times with 1:1 HNO3, followed by copious
rinsing with doubly-deionized water.
2. Prepare a series of standard solutions that bracket the range of K concentrations in the
samples.
3. If sample dilution is required, prepare at least two different dilutions of the sample.
DETERMINATION
1. Set up the spectrometer for the flame emission spectroscopic determination of K
according to the conditions listed in Table 1.
2. Measure each standard solution and sample dilution a minimum of two times.
3. Prepare a calibration curve by plotting the mean emission value versus concentration
for the standard solution.
Environmental Measurements Laboratory
U.S. Department of Energy Page 4 of 10
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Chieco, N.A. The procedures manual of the Environmental Measurements Laboratory. Volume 2, 28. edition, report, February 1, 1997; United States. (https://digital.library.unt.edu/ark:/67531/metadc697790/m1/89/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.