arsenate

Arsenate was once widely used as an insecticide in agriculture.

用法提示：这句中arsenate作主语，指一种化学物质。

Research shows that arsenate contamination of groundwater is a serious problem.

用法提示：这句中arsenate作定语修饰contamination，说明污染物的种类。

The laboratory analysis detected arsenate in the soil samples.

用法提示：这句中arsenate作宾语，指被检测到的物质。