对广州市华南理工大学五山校区2012年6 －8月4 场次实测降雨径流污染的初期冲刷效应进行了研究，结果表明，污染物TSS、COD、TN、TP、TCu、Zn、总硬度、NO₂^-- N、NH₃- N、 SO₄^2- 等均存在不同程度的初期雨水径流冲刷现象．根据其中3 场次降雨的总体结果分析发现:初期20%径流携带的TSS 负荷量为其总量的 7. 0% ～39. 4%，COD 为 20. 4% ～56. 0%， TN 为 13. 8% ～35. 2%，TP 为 16. 0% ～35. 2%;初期 30%径流携带的 TSS 负荷量为其总量的18. 6% ～ 56. 1%，COD 为37. 8% ～ 72. 6%，TN 为 22. 8% ～ 43. 2%，TP 为24. 3% ～53. 1%．对主要污染物 TSS、COD、TN、TP 的初期冲刷强度与降雨时间、降雨量、平均雨强、最大雨强、最大雨强出现时间、雨前干燥天气期之间的相关性分别进行分析，结果表明，除个别因素显著相关外，总体上表现为相关但不显著或不相关．

This paper deals with the first flush effects of four monitored rainfall runoff events in South China Univer-sity of Technology in Guangzhou from June,2012 to August 2012.The results show that the first flush phenomenaat different degrees exist in TSS,COD,TN,TP,TCu,Zn,total hardness,NO₂^-- N,NH₃- N and SO₄^2-.The analy-sis results of three rainfall events show that the first 20% of the runoff volume carries the pollution load of 7. 0% ～39. 4% for TSS,20. 4% ～56. 0% for COD,13. 8% ～35. 2% for TN and 16. 0% ～35. 2% for TP,while the first30% carries 18. 6% ～56. 1% for TSS,37. 8% ～72. 6% for COD,22. 8% ～43. 2% for TN and 24. 3% ～53. 1% forTP.Moreover,it is demonstrated that,except for a few significant correlative cases,there is no significant correla-tion or only low correlation between the first flush intensity of TSS,COD,TN as well as TP and the weather para-meters such as rainfall time,rainfall volume,average rainfall intensity,maximum rainfall intensity,appearancetime of maximum rainfall intensity and antecedent dry weather period.