Abstract
Fluorine concentrations in US National Bureau of Standards standard reference materials 1632a (coal) and 1633a (coal fly ash) have been determined by proton induced gamma ray emission (PIGME) and spark source mass spectrometry (SSMS) using the method of standard additions. Good agreement was obtained between the two techniques with no significant bias. The mean values for 1632a and 1633a were 178 +/- 18 mg kg/sup -1/ and 109 +/- 11 mg kg/sup -1/ respectively. 10 references, 1 table.
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