Chromatographic behavior of pyrithiones

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• 作者：Doose ; Caren Anja ; Szaleniec ; Maciej ; Behrend ; Peter ; Mü ; ller ; Anja ; Jastorff ; Bernd
• 关键词：Pyrithione ; Omadine ; Zinc pyrithione ; Antifouling biocides ; Speciation
• 刊名：Journal of Chromatography A
• 出版年：2004
• 期刊代码：47_00219673
• 类别：ch
• 出版时间：October 15, 2004
• 卷：1052
• 期：1-2
• 页码：103-110
• 文件大小：471 K

摘要

Pyrithione biocides are currently viewed as a major prospect for the replacement of tributyltin antifoulants in ship paints. The chromatographic behavior of 1-hydroxy-2-pyridinethione (pyrithione, PT), bis(2-pyridinyl)disulfide 1,1′-dioxide (PT₂), and the metal complexes zinc [Zn(PT)₂], iron [Fe(PT)₃] and copper [Cu(PT)₂] pyrithione, were investigated by means of UV–vis spectroscopy, ESI-MSⁿ, HPLC-DAD and HPLC-ESI-MSⁿD. This revealed transformations of the analytes, which affect the development of adequate methods for species or environmental analysis of pyrithiones. PT transforms into copper- or iron- containing complexes and/or the oxidation product PT₂, depending on the type of the stationary phase used in chromatographic analysis. Speciation complicates direct chromatography of [Zn(PT)₂] and [Fe(PT)₃].