测定意义：
                          
S-CAT是土壤微生物代谢的重要酶类，在H2O2清除系统中具有重要作用。

测定原理：

H2O2在240nm下有特征吸收峰，通过测定与土壤反应后溶液在此波长下吸光度的变化，即可反应S-CAT活性的高低。

需自备的仪器和用品：

紫外分光光度计、台式离心机、可调式移液器、1mL石英比色皿、研钵、冰和蒸馏水

Q;土壤过氧化氢酶：分光法的这个比色皿光径50px的行吗，还有这个湿土能做吗，还是必须风干？那风干37度要烘多久，不会对酶活性有影响吗？

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