CAJ | 학술논문

　　采用等温溶解平衡法研究了四元体系Na2 B4 O7-Na2 SO4-NaCl-H2 O 在288 K的相平衡关系，测定了平衡液相的溶解度及其密度。由研究结果知该四元体系为简单共饱和型，无复盐及固溶体形成。根据实验数据绘制了相应的相图。相图中有一个共饱点，三条单变曲线，三个结晶区平衡固相分别为：Na2 B4 O7·10H2 O， Na2 SO4·10H2 O和NaCl。实验结果表明NaCl对Na2 B4 O7和Na2 SO4有盐析作用，并简要讨论了实验结果。
　　채용등온용해평형법연구료사원체계Na2 B4 O7-Na2 SO4-NaCl-H2 O 재288 K적상평형관계，측정료평형액상적용해도급기밀도。유연구결과지해사원체계위간단공포화형，무복염급고용체형성。근거실험수거회제료상응적상도。상도중유일개공포점，삼조단변곡선，삼개결정구평형고상분별위：Na2 B4 O7·10H2 O， Na2 SO4·10H2 O화NaCl。실험결과표명NaCl대Na2 B4 O7화Na2 SO4유염석작용，병간요토론료실험결과。
Solubilities and densities of solution in the quaternary system NaCl-Na2 SO4-Na2 B4 O7-H2 O at 288 K were studied by iso-thermal equilibrium method.Based on the solubility data ,the phase diagram of the quaternary system was plotted ,which consists of three univariant curves,one invariant point and three crystallization fields corresponding to NaCl ,Na2B4O7· 10H2O and Na2SO4· 10H2O.The experimental results show that sodium chloride (NaCl)had the salting-out effect on sodium borate(Na2B4O7)and sodi-um sulphate(Na2SO4).