In this study, it was evaluated the combined cleaning treatment based on laser ablation followed by the application of chemical products for removing alkyd graffiti paint from two different types of stone. Three different laser treatments (operated in Q-switched, long Q-switched and free short running modes) were applied to the stone samples. The best two treatments were then followed up by application of a chemical product (a low toxic ternary solvent mixture). The Q-switched and the long Q-switched laser treatments in combination with the chemical agent were more effective than either of the laser treatments alone, leaving fewer paint remains, but with minimal damage to the stone.

在这项研究中，我们评估了基于激光烧蚀的联合清洁处理，然后应用化学产品从两种不同类型的石材中去除醇酸涂鸦涂料。对石材样品进行了三种不同的激光处理（以Q开关，长Q开关和自由短时间运行）。然后，最好的两种处理方法是施用化学产品（低毒三元溶剂混合物）。与单独使用任何一种激光处理相比，将Q开关和长时间Q开关激光处理与化学试剂相结合更为有效，留下的涂料很少，但对石材的损坏却最小。