测定肥料和土壤中有机质的方法有多种，通过文献查阅发现，用重铬酸钾滴定法测定有机-无机复混肥中的有机质是可行的。
By means of consulting a great deal of literature, the authors found that dichromatic oxidation titration method fits for the determination of organic matter in semi-organic fertilizers.
根据硫酸亚铁铵的用量算出水样还原性物质消耗氧的量，这就是重铬酸钾回流滴定法。
In accordance with ferrous ammonium sulfate in water samples to calculate the amount of material to restore the volume of oxygen consumption, which was potassium dichromate titration reflux.
根据硫酸亚铁铵的用量算出水样还原性物质消耗氧的量，这就是重铬酸钾回流滴定法。
In accordance with ferrous ammonium sulfate in water samples to calculate the amount of material to restore the volume of oxygen consumption, which was potassium dichromate titration reflux.
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