Application of a H-Point Standard Addition Method for Simultaneous Spectrophotometric Determination of Chlorate and Bromate Impurities in Military Grade Ammonium Perchlorate
A H‐point standard addition method (HPSAM) was applied to simultaneously determinate chlorate and bromate in ammonium perchlorate. The method is based on the difference between their reaction rates with chloride in acidic media whereby methyl orange is used as spectrophotometric indicator. The react...
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Published in | Propellants, explosives, pyrotechnics Vol. 38; no. 5; pp. 721 - 727 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
01.10.2013
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | A H‐point standard addition method (HPSAM) was applied to simultaneously determinate chlorate and bromate in ammonium perchlorate. The method is based on the difference between their reaction rates with chloride in acidic media whereby methyl orange is used as spectrophotometric indicator. The reaction can be monitored spectrophotometrically by measuring the decrease in the absorbance of methyl orange at 507 nm in the time range 50–250 s after initiation of the reaction with 1 s intervals. The results showed that chlorate and bromate can be determined simultaneously in the range 50–1000 and 50–2000 ng mL−1, respectively. The proposed method was applied to determinate chlorate and bromate impurities in military grade ammonium perchlorate. In addition, excellent agreement between this proposed method and standard methods was observed. |
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Bibliography: | ArticleID:PREP201200122 istex:305B46F977486BEACD61ADAF1D7BEC103C8C9019 ark:/67375/WNG-ZCDZP9KS-H ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0721-3115 1521-4087 |
DOI: | 10.1002/prep.201200122 |