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Fig. 7 | Heritage Science

Fig. 7

From: A pioneer of acrylic painting: new insights into Carmen Herrera’s studio practice

Fig. 7

Left, SERS spectra of a a purpurin lake synthesized in the laboratory, b sample S6 from Iberia #25 (1948), and c sample S2 from Flights of Colors #16 (1949), all acquired upon HF hydrolysis, displaying characteristic bands at ca. 652, 966, 1061, 1162, 1286, 1325, 1416, 1440, 1583, and 1624 cm−1. Right, EDS spectrum of the purpurin lake in sample S6 from Iberia #25 (1948), exhibiting intense Al, P, and S peaks

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