采用重量法对灰岩中的二氧化碳进行测定。首先用酸分解试样,在载气作用下,产生的二氧化碳被吸收液完全吸收,最后用重量法间接求出二氧化碳的含量。实验结果准确度高,矿石中的硫不干扰测定,可测定0.1%以上的二氧化碳。不经过复杂的气体净化步骤,操作准确、简单、易行,可用于灰岩中二氧化碳的测定。 Gravimetric method was used to determine the carbon dioxide in limestone. First acid decomposition of the sample, under the effect of carrier gas, the absorption of carbon dioxide by the absorbent completely absorbed, and finally gravimetric method to indirectly determine the content of carbon dioxide. Experimental results with high accuracy, sulfur in ore does not interfere with the determination of 0.1% of carbon dioxide can be determined. Without complicated gas purification steps, the operation is accurate, simple and easy, and can be used for the determination of carbon dioxide in limestone.