中文摘要：

文章应用高温高压腔连接紫外-可见谱仪研究了150℃条件下铅在含氯溶液里的物种形式。实验的体系是Pbs-NaCl-HCl-H2O。实验结果表明，铅在含氯溶液里的物种形成有2个步骤：Pb^2＋ ＋Cl^-1→PbCl^＋，PbCl^＋ ＋Cl^-→PbCl2，处于平衡态时为PbCl2。溶液的氯浓度、温度、反应延续时间影响物种形式。

英文摘要：

Speciation of metal in Cl-aqueous solutions at 150℃ was examined by using a high pressure and temperature cell connected to an UV-Visible spectrometer. PbS and aqueous solution were put in a high pressure vessel with a quartz window, through which UV-Visible light can pass. The cell was pressurized, and the cell was put in a heating box. Then this box was installed in the VUV spectrometer. The high pressure cell was heated until the pressure inside the cell reached the saturation vapor pressure. We could observe and test the UV-Visible spectra of the speciation of metal-bearing solutions at high temperature and saturation vapor pressure and could also continue to observe the changes of the speciation with time, temperature, and nature of solutions. In this way, the kinetic study of mineral-solution system could be realized, and the experimental system of PbS-NaCI-HCI-H20 was tested. The experiments indicate that two steps are involved in the speciation process of Pb-bearing solution, namely, Pb^2＋ ＋Cl^-1→PbCl^＋ and PbCl^＋ ＋Cl^-→PbCl2. The main species is PbCl2 in the solution near saturation. Concentration of Cl-bearing species, temperature and resident time affect the speciation.