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采用高频库仑法对医用激光材料硒、锗及其与砷混合物中氧含量的测定方法进行探索,建立了可行的分析方法,简介如下。一操作方法(高频库仑法) 高频库仑仪(KLS-56型上分二厂产品)经高温脱气后,仪器调节至最佳分析状态(空白稳定,炉温稳定,气流稳定,二次仪表稳定)。在炉温1200℃,载气(氩气)流量为250ml·min~(-1)时,待红灯亮时投入预先称好重量的硒试样(消去显示屏上脉冲数值),立即关闭气路,待试样中的氧与碳充分反应(约60～90s)后打开气路(其他试样不必关闭气路),待生成一氧化碳
The high frequency Coulomb method was used to explore the determination of oxygen content in the medical laser material of selenium, germanium and its mixture with arsenic, and a feasible analytical method was established. The brief introduction is as follows. A method of operation (high-frequency coulometry) High-frequency coulometer (KLS-56 on the sub-plant products) After degassing at high temperature, the instrument adjusted to the best state of analysis (blank stable, stable temperature, air flow stability, Instrument stable). When the carrier gas (argon) flow rate is 250ml · min -1 at the furnace temperature of 1200 ℃, pre-weigh the weight of selenium sample (eliminate the pulse value on the display screen) when the red light is on, and close the gas immediately Road, until the sample of oxygen and carbon fully reacted (about 60 ~ 90s) open air (other samples do not have to close the gas) to be generated carbon monoxide