Analytical and Molecular Recognition Strategies for Chinese Lacquerware Conservation

Area of Science:

• Materials Science
• Archaeochemistry
• Analytical Chemistry

Background:

• Chinese lacquerware presents complex analytical challenges due to degradation, mixed materials, and overlapping spectral signals.
• Distinguishing between lacquer, drying oils, proteins, polysaccharides, waxes, and pigments is difficult with traditional methods.

Purpose of the Study:

• To review and evaluate analytical strategies for characterizing Chinese lacquerware.
• To highlight the importance of integrated analytical workflows for reliable interpretation.

Main Methods:

• Morphological and elemental observation (Microscopy, SEM-EDS).
• Chemically specific molecular fingerprinting (FTIR, Raman spectroscopy, Pyrolysis-GC/MS).
• Biomolecular source recognition (Immunological assays).

Main Results:

• Microscopy, FTIR, Raman, and SEM-EDS identify stratigraphy, pigments, and functional groups but struggle with degraded matrices.
• Pyrolysis-GC/MS offers specific molecular markers (e.g., alkyl catechols, anhydrosugars) for detailed chemical analysis.
• Immunological assays aid biological source differentiation, contingent on protein preservation.

Conclusions:

• Robust interpretation of Chinese lacquerware requires cross-validation of stratigraphic, elemental, spectroscopic, chromatographic, and immunological data.
• Integrated analytical workflows enhance material identification, manufacturing sequence clarification, and degradation assessment.
• Reliable evidence from integrated analysis supports conservation decisions and historical craftsmanship reconstruction.