Selective Determination of Free Cyanide in Environmental Water Matrices by Ion Chromatography with Suppressed Conductivity Detection

Autor: Orhan Destanoğlu, Reşat Apak, Gülçin Gümüş Yılmaz
Rok vydání: 2015
Předmět:
Zdroj: Journal of Liquid Chromatography & Related Technologies. 38:1537-1545
ISSN: 1520-572X
1082-6076
Popis: The study was aimed at developing suitable chromatographic conditions and pretreatment methods for reliable trace analysis of cyanide in drinking water and seawater. Separation of CN− (as CNO−), F−, Cl−, , Br−, , , , and was carried on a Dionex IonPac AS20 column. Two different methods were developed for different samples. LOD and LOQ values were 7.2 µg L−1 and 24.0 µg L−1 for Method I and were 15.4 µg L−1 and 51.3 µg L−1 for Method II, respectively. Our results did not indicate the presence of cyanide in drinking water samples commercially supplied from Istanbul markets. By the addition of 250, 500, and 1000 µg L−1 to drinking water, cyanide recoveries were found 100.1%, 104.5%, and 106.9%, respectively, by employing Method I. Method II was applied to an artificial and real seawater sample obtained from the Marmara Sea, Istanbul, where a 50 µg L−1 cyanide spike gave a recovery of 100.1%. Interferences from excessive amounts of salts in seawater were removed by using strongly acidic cation-exchange resin ...
Databáze: OpenAIRE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje