Case: Desalination of Etruscan Bronzes
案例：伊特鲁里亚青铜器的除氯处理
标签：伊特鲁里亚, 除氯, 碱性溶液, 活性锈
佛罗伦萨考古博物馆对活性氯致锈（"青铜病"）的伊特鲁里亚器物采用倍半碳酸钠浸泡法：Na2CO3·NaHCO3 5% 溶液、60 天内每 7 天换液，氯离子浓度用电极监测至 <50 ppm 后转入去离子水漂洗 4 轮。体积大无法浸泡的雕像改用纸浆贴敷法局部提氯。处理后器物恒湿 35% RH 展陈并用 BTA + 微晶蜡双重封护；十年回访显示活性锈复发率 <5%。该案例是"碱液浸泡法"教科书级应用，代价是部分原始色泽被中性化。
For "bronze disease" in Etruscan finds, Florence's archaeological museum uses the sodium sesquicarbonate bath: 5% solution, changed weekly for 60 days with chloride monitored by ion electrode until <50 ppm, then four deionised rinses. Oversize statues get poulticing instead of immersion. Treated pieces display at 35% RH with BTA + microcrystalline wax; a ten-year survey shows <5% reactivation. A textbook application—whose cost is some loss of original surface tone. ---