中文摘要：

杂质离子往往是影响水晶电导率的主要因素。在2．0GPa和823-1123K的条件下，借助交流阻抗谱法在10^-1-10^6Hz频率范围内，就位测量了水晶Z轴方向的电导率，并用LA-ICP-MS测试了水晶中杂质Na、Al的含量。通过Arrhenius关系拟合，得出2．0GPa和823-1123K条件下水晶的活化焓和指前因子。发现水晶中杂质Na、Al的含量彼此正相关，水晶电导率与晶体中Na含量正相关，且指前因子亦与水晶中杂质Na、Al含量正相关。

英文摘要：

Ionic impurity is the most important factor affecting the electrical conductivity of synthetic quartz crystals. We measured the electrical conductivity of synthetic quartz crystals using the AC （ 10^-1 - 10^＋ Hz） complex impedance method in the temperature range between 823 and 1123 K at the pressure of 2. 0 GPa. Using the method of LA-ICP- MS, the contents of Na and A1 in the study quartz crystals were measured. By fitting the plots of lgσT vs 1/T, we got the pre-exponential factor and activation energy at 2. 0 GPa and 823 - 1123 K. It was found that： the contents of Na increased with increasing contents of AI, and in advance, with increasing contents of Na both the electrical conduc- tivity and pre-exponential factor tended to increase.