A series of standard solution made up with standard substance of sodium carbonate, and combusted in a high-frequency induction furnace with pure oxygen, and the amount of total carbon was measured by infrared absorption.

• 摘要以碳酸钠为基准物质，配成一系列标准溶液，在通有纯氧气的高频炉中燃烧，红外吸收法测定碳含量，绘制校准曲线，测定矽中总碳量，与推荐值基本一致，方法准确、结果满意。