水在钠长石熔体中溶解类型的实验研究

STUDY ON SOLUBILITY SPECIATIONS OF WATER IN ALBITE MELTS

根据对含水钠长石玻璃的FTIR光谱研究 ,认为水在钠长石熔体中同时以OH- 和H2 O形式存在 ,这分别对应于FTIR光谱中的 4 5 0 0cm- 1及 5 2 0 0cm- 1谱峰。此外 ,研究表明在溶解初期水主要以OH- 存在于熔体中 ,随着熔体中水含量的升高 ,H2 O分子则成为主要的溶解类型。而且 ,水的溶解类型变化与熔体粘度变化特征是一致的。

On the basis of FTIR spectroscopy study on hydrous albite glasses, it is concluded that water dissolves into melts as OH- and H2O simultaneously and these are accordance with 4500 cm-1 and 5200 cm-1 in FTIR spectra respectively. In addition, studies also indicate that OH- is dominant in the early solubility and H2O becomes important with higher water contents. And the change of water solubility speciation in melts agrees with the character of hydrous melt.