详见链家：

化学需氧量http://60.191.19.180/cms/jjgs/28916.htm

氨氮http://60.191.19.180/cms/jjgs/28917.htm

二氧化硫http://60.191.19.180/cms/jjgs/28918.htm

氮氧化物http://60.191.19.180/cms/jjgs/28919.htm