Selective determination of sulfuric acid in liquors from acidic nickel ore extraction by flow injection analysis

Autor:	Fernando Albertús, Isel Cortés
Rok vydání:	1996
Předmět:	Flow injection analysis Chromatography Extraction (chemistry) Potentiometric titration chemistry.chemical_element Sulfuric acid Biochemistry Analytical Chemistry Nickel chemistry.chemical_compound chemistry Reagent Sodium sulfate Methyl orange Environmental Chemistry Spectroscopy
Zdroj:	Analytica Chimica Acta. 328:61-65
ISSN:	0003-2670
DOI:	10.1016/0003-2670(96)00076-1
Popis:	A two channel flow injection analysis (FIA) system for selective determination of sulfuric acid in liquors from acidic nickel ore extraction has been developed. Absorbance at 520 nm is increased due to changes in the reagent system (sodium sulfate/ methyl orange) caused by reaction with H 2 SO 4 injected. Data processing was performed by non-linear regression. The results obtained by the proposed method are compared with those obtained by traditional potentiometric titrations. The setup allows a sampling rate of 120 samples per hour. The relative standard deviation (RSD) obtained was ≤8%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b52438bad3e2eb6b5bd19c3ca89365af https://doi.org/10.1016/0003-2670(96)00076-1 Zobrazit plný text záznamu Full Text from ScienceDirect