Various Species of Phosphorus in Surface Water around Hefei City

This paper took Swan Lake,Dongpu Reservoir and Feicui Lake as the research objects to discuss the concentrations and correlation of various species of phosphorus.The results were obtained by standard methods in Technical Specifications Requirements for Monitoring of Surface Water and Waste Water.Results show the average concentration of TP in Swan Lake is 0.102 mg/L and is at Grade V.Among various species of P in Swan Lake,DTP and DOP are the main existing forms.In addition,the positive correlation of TP to DIP has been found in this lake.The average concentration of TP in Dongpu Reservoir is 0.031mg/L and is at Grade Ⅲ.DTP and DIP are the dominant species of P in Dongpu Reservoir.Among various species of P in this reservoir,there are significant positive correlations between TP and DTP.The average concentration of TP in Feicui Lake is 0.060 mg/L and is at Grade Ⅳ.Among various species of P in Feicui Lake,DTP is the main existing form.The positive correlation of TP to PP has been found and PP holds an important position in this lake.