Use of Barium Chloranilate Solid-Phase Reactor for the Determination of Sulfate in Natural Water Samples Exploiting Long Pathlength Spectrophotometry and Multicommutation

Autor:	Orlando Fatibello-Filho, Fernanda Helena Salami, Viviane Gomes Bonifácio, Luiz H. Marcolino-Junior
Rok vydání:	2011
Předmět:	Detection limit Polyester resin chemistry.chemical_classification Chromatography medicine.diagnostic_test Chemistry Biochemistry (medical) Clinical Biochemistry chemistry.chemical_element Barium Biochemistry Analytical Chemistry Ion Barium sulfate chemistry.chemical_compound Spectrophotometry Phase (matter) Electrochemistry medicine Sulfate Spectroscopy
Zdroj:	Analytical Letters. 44:298-309
ISSN:	1532-236X 0003-2719
DOI:	10.1080/00032719.2010.500774
Popis:	A flow-injection method for the spectrophotometric determination of sulfate in natural water samples using a solid-phase reactor with barium chloranilate (BaC6Cl2O4) immobilized in a polyester resin is presented. This procedure is based on the formation of insoluble barium sulfate (BaSO4) in the solid-phase reactor releasing chloranilate ions (C6Cl2 ), which was monitored spectrophotometrically at a wavelength of 533 nm. The analytical curve was linear in the sulfate concentration range from 2.5 to 40.0 mg L−1 with a detection limit of 0.1 mg L−1 and an analytical frequency of 50 h−1.
Databáze:	OpenAIRE
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