古玉器的化学风化机理初探之一——粉末态模拟实验

Chemical weathering mechanism of ancient jades:powder simulation experiments

矿物的溶解和分解是矿物风化的重要过程,因此探明矿物的溶解和分解过程将有助于揭示其风化机理。古玉在长期的埋藏过程中,处于土壤及土壤水的溶解反应体系中。本文初步模拟古玉埋藏的酸、碱性土壤环境,通过对不同材质玉料的粉末形态在酸、碱缓冲溶液中的浸泡实验,初步探讨了不同材质玉料在酸、碱环境下的风化机理。

Mineral dissolution is an important process in mineral weathering, and therefore the research on the mineral dissolution process helps to reveal the mineral weathering mechanism. The ancient jade has been in a dissolution reaction system of soil and soil-water in its long burial process. Generally speaking, the soils of southern China are somewhat acid, whereas soils in northern China tend to be alkaline. The authors preliminarily simulated the acid and alkaline environments that buried ancient jades experienced. Based on the soaking experiment in which the powder shapes of different jade materials were dipped in acid and alkaline buffer solutions, this paper preliminarily discusses the weathering mechanism of different jade materials.