高频燃烧——电导法测定铁合金中碳和硫

DETERMINATION OF CARBON AND SULFUR IN FERROALLOYS BY ELECTROCONDUCTOMETRIC METHOD HYPHENATING WITH HIGH FREQUENCY COMBUSTION FURNACE

选择活化剂用于电导法测定碳量.发现其吸收好,灵敏度高(可达10^(-4)%数量级),测试范围宽.测定碳量在0.062%～5.03%之间的铁合金,结果精密度好、准确度高.

A new and effective activator is prepared and tested for the complete absorption of the CO_2 evolved. It is proved that through the use of this new activator, quantitative absorption of CO_2, high sensitivity (with the detection limit approaching w_c 10^(-1)%) and wider concentration range for carbon determination (w_c 0. 06% ~ 5. 00%) were achieved. The proposed method has been used for the determination of carbon and sulfur in several ferroalloy standard samples with satisfactory results.