Key Caboratory of Chinese Ministry of Education of northwest Water Resource and Environmental ecolog School of environmental and Municipal Engineering 声建墨群骨 xi'an University of Architecture and Technology Dissolved and suspended nitrogen (1) Dissolved and suspended nitrogen(2) 口 Dissolved口 Suspended Sampling Numbe Dissolved average 80.3% Suspended average Inorganic nitrogen takes about 70% of the total nitrogen among them most are ammonia nitrogen: About 80% of the tn are dissolved matter and only 20%are suspended matter; Dissolved matter takes about 88% of the inorganic nitrogen and about 60% of the organic nitrogenKey Laboratory of Chinese Ministry of Education of Northwest Water Resource and Environmental Ecology School of Environmental and Municipal Engineering Xi’an University of Architecture and Technology • Inorganic nitrogen takes about 70% of the total nitrogen, among them most are ammonia nitrogen; • About 80% of the TN are dissolved matter and only 20% are suspended matter; • Dissolved matter takes about 88% of the inorganic nitrogen and about 60% of the organic nitrogen