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1992～1993年4个航次的调查研究结果表明，九龙江河口区总磷的分布和转移受悬浮物含量明显控制。当SPM含量低时，其迁移过程接近理想行为；SPM含量高时则为非理想行为。估算得出，九龙江水体总磷的平均人海通量为1．47×103t／a。其中，溶解态磷为0．43×103t／a，约占29％；颗粒态磷占71％，九龙江水磷的输入以颗粒态为主。溶解态磷的分布，基本上在某一水平上了波动，其入海通量受环境影响很小，可能意味着颗粒磷的缓冲作用。
The survey results of four voyages from 1992 to 1993 show that the distribution and transfer of TP in the estuary area of Kowloon River are obviously controlled by the suspended matter content. When the content of SPM is low, its migration process is close to the ideal behavior; when SPM content is high, it is non-ideal behavior. It is estimated that the average human sea flux of total phosphorus in Jiulong River water body is 1.47 × 103t / a. Among them, dissolved phosphorus was 0.43 × 103t / a, accounting for about 29%; particulate phosphorus accounted for 71%, Jiulongjiang water and phosphorus input to the particle state-based. The distribution of dissolved phosphorus basically fluctuates at a certain level. Its flux into the sea is very little affected by the environment, which may imply the buffering action of granular phosphorus.