Total cyanide determination by a segmented flow injection–on-line UV digestion–amperometric method

Autor:	Emil B. Milosavljevic, Michael R. Straka, Ljiljana Solujic
Rok vydání:	1999
Předmět:	Detection limit Accuracy and precision Chromatography Cyanide Biochemistry Amperometry Analytical Chemistry law.invention chemistry.chemical_compound Wastewater chemistry law Electrochemistry Environmental Chemistry Sample preparation Quantitative analysis (chemistry) Distillation Spectroscopy
Zdroj:	The Analyst. 124:1255-1260
ISSN:	1364-5528 0003-2654
DOI:	10.1039/a904764f
Popis:	Extensive species and concentration dependent cyanide recovery studies were carried out using a novel automated segmented flow injection–on-line UV digestion–amperometric (FI-UV) method for determination of total cyanide in water and wastewater samples. In addition, the response of the method to the presence of potential interferents was tested. The performance of the proposed method was compared with that of the standard method. The data obtained show that the FI-UV method has significant advantages over the EPA/ASTM approved procedures. Total cyanide levels and spike recoveries were determined for nine different industrial effluents. The precision and accuracy of the method, when applied to these effluents, expressed in terms of mean relative standard deviation and average percentage of spike recovery, were 1.5% and 101.0%, respectively. The technique developed eliminates the need for the time consuming, labor intensive distillation called for in the EPA/ASTM approved procedures. The method is rapid, selective and reproducible with a detection limit of 0.2 µg L–1 and a throughput of 30 analyses per hour.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d4e4a9fb2ea6dd1d6c0352b2fbf1ebc https://doi.org/10.1039/a904764f Zobrazit plný text záznamu