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Determination of Significance：
The activity of soil dehydrogenase can reflect the amount of active microorganisms in the soil systemthe and its degradation activity to organic compounds, it can be used as the degradation index of soil microorganisms.
Measurement Principle：
The hydrogen receptor 2, 3, 5-triphenyl tetrazolium chloride (TTC) is reduced to Triphenyl Formazone (TF) during cellular respiration, TF is red which has a maximum absorption peak at the wavelength of 485 nm. Detect the absorbance at 485 nm can obtain the activity of soil dehydrogenase.
Self Provided：
Sieve, scale, constant temperature incubator, centrifuge, spectrophotometer, 1 mL glass cuvette, ice, distilled water, acetone(self-provided).
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