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1.氨氮(尿素、氨水等化肥)。一般水体中氮的含量不超过1毫克/千克为宜,如果饮用水的含量超过2毫克/千克,就会给人类身体健康带来危害。
Ammonia nitrogen (urea, ammonia and other fertilizers). Nitrogen content of general water is not more than 1 mg / kg is appropriate, if the drinking water content of more than 2 mg / kg, it will bring harm to human health.