sulfonating agent

例句：

1. 1. This chemical is used to treat soil contamination by heavy metals.
   这种化学物质用于处理土壤中的重金属污染。
2. 2.The sulfonating agent helps to remove the pollutants from the water.
   磺化剂有助于从水中去除污染物。
3. 3.The use of this sulfonating agent has been banned in some countries due to its toxic effects.
   由于其毒性效应，这种磺化剂在一些国家已被禁止使用。