Electrochemistry of iron oxide pigments (earths) from pictorial microsamples attached to graphite-polyester composite electrodes

被引：35

作者：

Doménech-Carbó, A

Doménech-Carbó, MT

Gimeno-Adelantado, JV

Bosch-Reig, F

Saurí-Peris, MC

Sánchez-Ramos, S

机构：

[1] Univ Valencia, Dept Quim Analit, E-46100 Valencia, Spain

[2] Univ Politecn Valencia, Dept Conservacio & Restauracio, Valencia 46022, Spain

来源：

ANALYST | 2001年 / 126卷 / 10期

关键词：

D O I：

10.1039/b100257k

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical response of different iron pigments attached to graphite-polyester composite electrodes is described. Characteristic differential pulse voltammetric profiles were obtained for green earth, iron oxide red, Mars black, ochre yellow, Sienna raw, umber raw and Van Dyke brown. Proton-assisted reductive dissolution processes occur at the three-phase boundary of the substrate electrode-attached solid electrolyte solution system. Microsamples extracted from polychromed sculptures, canvas paintings, wall paintings, altarpieces and panel paintings from Spain, Ethiopia and Italy from the 12th to the 20th centuries were electrochemically identified in agreement with polarized light microscopy, SEM/EDX, XRD and FT-IR data.

引用

页码：1764 / 1772

页数：9

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