Fertilizer Salt Deposits Contamination

Fertilizer-residue contamination, it arises from nitrate and phosphate deposits, which accumulate on surfaces through prolonged exposure to agricultural chemicals and environmental moisture, distinguishing itself from other residues by its crystalline structure that promotes uneven layering. This contamination, it adheres more tenaciously to porous materials like limestone and marble, where it penetrates deeply, while on metals such as steel or copper it manifests as a thin film that accelerates oxidation, thus posing removal challenges dependent from its variable solubility and risk of substrate etching. Laser cleaning exhibits effectiveness here, as the process selectively vaporizes the residue without altering the underlying material, which leads to efficient restoration that traditional methods often fail to achieve.