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首页> 外文期刊>Journal of mass spectrometry: JMS >Simultaneous identification of historical pigments Prussian blue and indigo in paintings by electrospray mass spectrometry
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Simultaneous identification of historical pigments Prussian blue and indigo in paintings by electrospray mass spectrometry

机译：电喷雾质谱同时鉴定绘画中的历史颜料普鲁士蓝和靛蓝

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摘要

A new analytical protocol for identification of Prussian blue (PB) and indigo was proposed. Pigments useful for dating of artworks were detected by flow injection analysis/electrospray ionization mass spectrometry after alkalization of their suspensions in water, decomposition of PB to iron (III) hydroxide and hexacyanoferrate (II) and reduction of indigo to soluble leucoindigo using sodium dithionite. Limits of detection (PB 47 pg, indigo 59 pg) complied with requirements for analysis of microsamples of historical paintings. Potential of the developed method was proven in analysis of blue samples of two oil paintings from the 20~(th) century. Further, PB was confirmed in a microsample from a painting of 'Crucifixion', St. Sebestian church on St. Hill in Mikulov, Czech Republic.
机译：提出了一种用于识别普鲁士蓝（PB）和靛蓝的新分析方案。在水中悬浮液碱化，PB分解为氢氧化铁（III）和六氰合铁酸盐（II）以及将靛蓝用连二亚硫酸钠还原为可溶性白靛蓝后，通过流动注射分析/电喷雾电离质谱法检测可用于艺术品定年的颜料。检出限（PB 47 pg，靛蓝59 pg）符合分析历史绘画微样品的要求。这种分析方法的潜力在分析20世纪20年代的两幅油画的蓝色样本时得到了证明。此外，从捷克共和国米库洛夫St. Hill的St. Sebestian教堂的“耶稣受难像”绘画的微量样品中证实了PB。

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