耕作問題 --- 土壤養份測試

2007-12-01 12:57 am
有些叫
soil testing kit 的 土壤測試套裝 說可測到泥土的
nitrogen, phosphorus 及 potassium;

而叫
fertility analyzer 的 土壤養份測試器 說可測到泥土的
nitrogen, phosphorus 及 potash;

兩種測試的 mechanism 是怎樣的呢?
更新1:

對不起,期望答案是一些 chemical equation 。 這是化學的問題呢!

回答 (1)

2007-12-05 6:17 pm
✔ 最佳答案
In soil testing kit, the detection methods are based on colormetric.

Nitrogen - based on Cadmium reduction method
Phosphorous - based on Ascorbic Acid method
Potasssium - based on Turbidimetric Tetraphenylborate method

When we are using the analyzer, we will detect the concentration based on the abosrbance at a particular wavelength instead of using color comparator.


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