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以纳米材料ZrO2粉为催化剂代替开氏法测全氮中的K2SO4，CuSO4，Se混合催化剂，消煮测定后发现，其催化效果明显，所测全氮数据均高于由混合催化剂消煮后的测定值，且平行测定数据稳定，重现性好。同时也发现,以纳米材料为催化剂．可缩短消煮时间,省时省电。
The catalytic effect of ZrO2 powder as nanocrystalline material instead of K 2 SO 4, CuSO 4 and Se in total nitrogen was determined by digestion and desorption method. The measured data of total nitrogen were all higher than that of the mixed catalyst after digestion and digestion Measured value, and parallel determination of data stability, good reproducibility. Also found that nano-materials as a catalyst. Reduce cooking time, saving time and energy.