广州城市河涌氮、磷污染研究

对广州市区典型河涌氮、磷污染进行分析研究。结果表明:上覆水中氨氮质量浓度为6.21~22.40 mg/L,间隙水中氨氮质量浓度为19.9~152.0 mg/L。河涌上覆水以及间隙水中的氮污染主要是无机氮污染,且以氨氮为主,占总无机氮的90%以上。各河涌的氨氮和总氮值之间表现出很强相关性,但上覆水的氨氮和总氮值与间隙水的氨氮和总氮值之间,却不存在明显相关性。底泥间隙水与上覆水磷形态差异较大,间隙水中可溶性正磷酸盐与总磷具有较好的相关性,且有机磷质量浓度比上覆水要高;底泥中可溶性磷(Psol)、铝结合磷(PAl)质量浓度较低,铁结合磷(PFe)质量浓度较高。悬浮物中各形态磷质量浓度整体上均比底泥样品要高。

Nitrogen and phosphorus pollution of river in urban area of Guangzhou

The levels of nitrogen and phosphorus in typical rivers in the urban area of Guangzhou was analyzed.The results showed that the concentration of ammonia in the overlying water was from 6.21 mg/L to 22.40 mg/L;it was from 19.9 mg/L to 152.0 mg/L in the interstitial water.The major form of nitrogen was inorganic.In the overlying water and the interstitial water,ammonia accounted for more than 90% of the total inorganic nitrogen.There was a strong correlation between the ammonia and total nitrogen in the river...