METHODS OF STABILIZING TOTAL ORGANIC CARBON (TOC) LEVELS IN NON-ACIDIFIED STANDARDS FOR TOC ANALYZERS AT ROOM TEMPERATURE

A method for stabilizing reference standards used in total organic carbon (TOC) analysis of water and pharmaceutical samples includes adding a preservative to TOC reference standards. The preservative is selected from the group consisting of copper (II) sulfate and hydrogen sulfite. Compositions of...

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Bibliographische Detailangaben
1. Verfasser:	DENG, SHOUQUAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TESTING
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Beschreibung
Zusammenfassung:	A method for stabilizing reference standards used in total organic carbon (TOC) analysis of water and pharmaceutical samples includes adding a preservative to TOC reference standards. The preservative is selected from the group consisting of copper (II) sulfate and hydrogen sulfite. Compositions of the stabilized reference standards are also disclosed. L'invention porte sur un procédé pour la stabilisation d'étalons de référence utilisés en analyse de carbone organique total (COT) d'échantillons d'eau et de produits pharmaceutiques, comprenant l'ajout d'un conservateur aux étalons de référence de COT. Le conservateur est choisi entre le sulfate de cuivre(II) et un hydrogénosulfite. L'invention porte également sur des compositions des étalons de référence stabilisés.