Sequential injection analysis determination of sulphate in wastewaters by ultraviolet-spectrophotometry



Document title: Sequential injection analysis determination of sulphate in wastewaters by ultraviolet-spectrophotometry
Journal: Journal of the Brazilian Chemical Society
Database: PERIÓDICA
System number: 000310889
ISSN: 0103-5053
Authors: 1

Institutions: 1Universidade do Porto, Faculdade de Farmacia, Porto. Portugal
Year:
Season: Abr
Volumen: 11
Number: 2
Pages: 170-174
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract A sequential injection analysis system based on the formation of the cation FeSO4+ and the spectrophotometric measuring of the absorbance at 355 nm has been developed for the determination of sulphate in wastewaters. The main interferents were also evaluated. The proposed system is fully automatized and is able to monitor sulphate in samples. The relative standard deviation (RSD) obtained was smaller than 2.4%. The linearity of response was obtained between 10 and 1000 mg L-1. The sampling rate was 72 samples per hour
Portuguese abstract Foi desenvolvido um sistema de análise por injeção sequencial, baseado na formação do cátion FeSO4+ e detecção espectrofotométrica a 355 nm, para a determinação de sulfato em águas residuais. Os principais interferentes foram avaliados. O sistema proposto é totalmente automático e permite o monitoramento de sulfato em amostras. O desvio padrão relativo (RSD) obtido foi inferior a 2,4%. O sistema apresentou uma resposta linear entre 10 e 1000 mg L-1. A velocidade de amostragem obtida foi de 72 amostras por h
Disciplines: Química,
Ingeniería
Keyword: Ingeniería ambiental,
Ingeniería química,
Aguas residuales,
Sulfatos,
Análisis por inyección secuencial,
Espectrofotometría de ultravioleta
Keyword: Chemistry,
Engineering,
Chemical engineering,
Environmental engineering,
Waste water,
Sulphate,
Sequential injection analysis,
Ultraviolet spectrophotometry
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