长江流域水环境监测网 关键词：地表水；自然沉降时间；总磷；测定 [gap=734]Key words：total phosphotos；static balance time；surface water；detection
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水样中总磷含量随着自然沉降时间的延长而逐渐降低。
The amount of total phosphorus in surface water declines gradually with the prolonging of static balance time.
因此样品采集回来后样品的自然沉降时间是影响地表水中总磷测定结果的一个主要原因之一。
Therefore, after being gathered, the static balance time of sample is one of main factors that affect the detecting result.
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