Determination of sulfur in steels by radiochemical neutron activation analysis with liquid scintillation counting | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1562317

Reference Type

Journal Article

Title

Determination of sulfur in steels by radiochemical neutron activation analysis with liquid scintillation counting

Author(s)

Paul, RL

Year

2008

Is Peer Reviewed?

Yes

Journal

Journal of Radioanalytical and Nuclear Chemistry
ISSN: 0236-5731
EISSN: 1588-2780

Volume

276

Issue

Page Numbers

243-249

DOI

10.1007/s10967-008-0440-1

Web of Science Id

WOS:000254920700040

Abstract

A method has been developed for the determination of low-level sulfur in steels by radiochemical neutron activation analysis. During sample irradiation, S-35 is produced by the S-34(n,gamma)S-35 reaction. Irradiated steels are mixed with sulfur carrier and dissolved in HCl/HNO3. Sulfur is reduced to H2S by reaction with HI/H3PO2/HCl. The evolved H2S is absorbed in dilute NaOH, which is mixed with scintillation cocktail for the measurement of 35S by liquid scintillation counting. Sulfur carrier yield is determined by iodometric titration. Chlorine is also determined by RNAA in order to correct for S-35 produced via the Cl-35(n,p)S-35 reaction. Sulfur has been determined at mass fractions as low as approximate to 5 mg/kg in ultra-high-purity iron using this method.