1.Do not use slaked lime or unslaked lime.

1.不使用生石灰或是石灰。

2.Experiments show that causticizing by adding a small quantity of slaked lime can eliminate the interference of carbonate ions and humic acid salts.

2.添加少量的石灰可即刻消除碳酸根和腐植酸盐有杂质的影响。