ammonium arsenate

例句：

1. 1. This chemical is used as an additive in fertilizers to increase the nitrogen content.
   这种化学物质用作肥料的添加剂，以增加氮含量。
2. 2. The factory produces ammonium arsenate for use in pesticides.
   该工厂生产亚硝酸铵，用于农药中。
3. 3. Ammonium arsenate is a common ingredient in water treatment systems.
   亚硝酸铵是水处理系统中常见的成分。