火山灰土壤中火山玻璃含量测定的氢氟酸方法研究

Determination of Volcanic Glass Contents in Volcanic soils by a Hydrofluoric Acid Dissolution Method

以长白山山脉火山喷出物发育土壤为研究对象,设计了7种测试方案,用偏光显微镜观察溶解剩余物中火山玻璃残留验证溶解效果,对氢氟酸溶解法测定火山玻璃的测试条件进行了比较研究,探讨了成土母质类型、土壤发育程度、土壤样品颗粒大小对火山玻璃测定结果的影响,最后提出火山灰土壤中火山玻璃含量测定的改进方法。

A hydrofluoric acid dissolution method was introduced for the determination of volcanic glass contents. The soils used in this study were developed from volcano extrusive of the Changbai Mountain. We prepared seven kinds of test solutions by using polarizing microscope to measure the residues of dissolved volcanic glass. We evaluated the impacts of soil parent material types, degrees of soil development and soil particle size on the determination of volcanic glass contents.