测定了江苏省苏州城市不同河流段底泥中各种形态磷的含量.结果表明,河流底泥磷含量总体都较高,总磷的含量大多数在1000 mg/kg左右,远远超过了当地土壤中总磷含量的本底值.底泥污染主要是无机磷污染,无机磷占到了总磷的72%～91%;有机磷含量较低,占总磷的9%～28%.无机磷可分为非磷灰石无机磷和磷灰石无机磷,二者在不同河道底泥中的含量和比例都不尽相同.%The centent of various forms of phosphorus in different rivers of urban Suzhou in Jiangsu Province was determined.As indicated by the results,the P content in river sediment was generslly high,most of them were above 1000mg/kg,far beyond the background value of lo-cal soil P content.The sediments were mainly polluted by inorganic P, which accounted for 70%-91% of total P;while organic P only took for 9%-28%.Inorganic phosphours could be divided into non-apatite inorganic phosphorus and apatite phosphorus.Their content and propor-tion in sediment differed from river to river.
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