University of Pisa, Department of Chemistry and Industrial Chemistry, Via Risorgimento, 35, I-56126 Pisa, Italy.
Anal Chim Acta. 2013 Oct 3;797:64-80. doi: 10.1016/j.aca.2013.08.021. Epub 2013 Aug 20.
Alkyd resins have been commonly used as binders in artist paints since the 1940s. The characterization of alkyds in samples from artworks can help to solve attribution and dating issues, investigate decay processes, and contribute to the planning of conservation strategies. Being able to assess the components of industrially formulated paint materials and to differentiate between different trademarks and producers is extremely interesting and requires multi-analytical approaches. In this paper we describe the characterization of commercial alkyd paint materials using a multi-analytical approach based on the integration of three different mass spectrometric techniques: gas chromatography-mass spectrometry (GC/MS), high performance liquid chromatography coupled with electrospray ionization mass spectrometry with a tandem quadrupole-time of flight mass spectrometer (HPLC-ESI-Q-ToF), and flow injection analysis (FIA) in the ESI-Q-ToF mass spectrometer. GC/MS was successful in determining the fatty acid and aromatic fractions of the resins after hydrolysis; HPLC-ESI-Q-ToF analysis enabled us to identify the triglycerides (TAGs) and diglycerides (DAGs) profile of each resin, and FIA analysis was used as a rapid method to evaluate the presence of possible additives such as synthetic polymers.
醇酸树脂自 20 世纪 40 年代以来一直被广泛用作艺术家绘画中的粘合剂。对艺术品样本中的醇酸树脂进行特征分析有助于解决归因和年代测定问题，研究衰变过程，并有助于制定保护策略。能够评估工业配方油漆材料的成分，区分不同的商标和生产商是非常有趣的，这需要采用多分析方法。在本文中，我们描述了使用基于三种不同质谱技术集成的多分析方法对商业醇酸油漆材料的特征分析：气相色谱-质谱（GC/MS）、高效液相色谱-电喷雾电离串联四极杆飞行时间质谱（HPLC-ESI-Q-ToF）和流动注射分析（FIA）在 ESI-Q-ToF 质谱仪中。GC/MS 成功地测定了水解后树脂的脂肪酸和芳烃部分；HPLC-ESI-Q-ToF 分析使我们能够确定每种树脂的三酸甘油酯（TAG）和二酸甘油酯（DAG）谱，而 FIA 分析被用作快速评估可能存在的添加剂（如合成聚合物）的方法。
