硝酸铵是清洗石质文物表面污垢的常用方法。然而,有研究认为硝酸根离子可能会溶解大理石或石灰岩等含碳酸钙成分的石质文物中的部分钙质。针对此问题,美国史密森尼博物院博物馆保护协会的研究人员设计了一系列实验,来验证硝酸铵是否会在清洗石质文物的同时对文物本身产生伤害。研究人员制备了8种不同pH值、不同浓度的硝酸铵溶液:pH值分别为7、8、9、10(用氢氧化铵调配);浓 Ammonium nitrate is a common method of cleaning the surface of stone artifacts dirt. However, some studies suggest that nitrate ions may dissolve some of the calcium in stone artifacts such as marble or limestone containing calcium carbonate. In response to this problem, researchers at the Smithsonian Institution Museum Conservation Society have designed a series of experiments to test whether ammonium nitrate can harm the artifacts while cleaning stone artifacts. The researchers prepared eight different pH values, different concentrations of ammonium nitrate solution: pH values ​​were 7,8,9,10 (with ammonium hydroxide deployment); concentrated