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- W93500687 abstract "Publisher Summary This chapter discusses the new method used for the isotopic examination of sub-milligram carbonate samples using sulphamic acid (NH2.SO3H). This method of reacting NH2.SO3H with carbonate was developed in an effort to find an alternative technique for producing isotopically representative CO2 from small carbonate samples without using an automated device. The fixed stoichiometry of NH2.SO3H potentially results in excellent reproducibility, producing gas with an isotopic composition dependent only on the make-up of the carbonate and the reaction temperature. NH2.SO3H method attempts to avoid difficulties by using fast reactions in a non-aqueous environment. With good control of the reaction furnace very similar replicate analyses should be achievable in any laboratory. While loading clean tubes with weighed ingredients is somewhat time consuming, the preparation of phosphoric acid is avoided and there is no need to pass the gas through a transfer line to remove water vapor. The method could be improved by the construction of a purpose built furnace which would facilitate the reaction of numerous samples and standards. Sulphamic analysis of carbonates offers the opportunity to compare isotopic effects encountered in conventional phosphoric acid analyses with those in a high temperature anhydrous environment." @default.
- W93500687 created "2016-06-24" @default.
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- W93500687 date "2004-01-01" @default.
- W93500687 modified "2023-09-24" @default.
- W93500687 title "A New Method for the Isotopic Examination of Sub-Milligram Carbonate Samples, Using Sulphamic Acid (NH2.SO3H) at Elevated Temperatures" @default.
- W93500687 doi "https://doi.org/10.1016/b978-044451114-0/50014-4" @default.
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