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本文研究了三波长分光光度法同时直接测定NO_3-N和NO_2-N的各种条件影响。该方法分析速度快、干扰较少,对水样和土样分析均获满意的结果。
In this paper, the simultaneous determination of NO 3 -N and NO 2 -N by three-wavelength spectrophotometry was studied. The method has the advantages of fast analysis, less interference and satisfactory results for both water samples and soil samples.