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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
硝态氮是指硝酸盐中所含有的氮元素。土壤中的有机物分解生成铵盐，经氧化后转化为硝态氮。土壤硝态氮是高等植物吸收氮素的主要形式之一，其含量直接影响作物的产量与品质。 土壤浸出液中硝酸根离子在220 nm处有明显吸光度，而在275 nm处无特征吸收。测定土壤浸出液在275 nm处的吸光度，乘以校正因子f，以消除有机质在220 nm波长处的光吸收干扰，据此即可计算土壤中硝态氮的含量。
Nitrate nitrogen refers to the nitrogen element contained in nitrates. Organic matter in soil decomposes to form ammonium salts, which are converted into nitrate nitrogen after oxidation. As one of the major nitrogen forms absorbed by higher plants, soil nitrate nitrogen directly affects crop yield and quality. Nitrate ions in soil extract exhibit distinct absorbance at 220 nm and show no characteristic absorption at 275 nm. The absorbance of soil extract measured at 275 nm is multiplied by a correction factor f to eliminate the interference of light absorption by organic matter at 220 nm. Based on this value, the content of nitrate nitrogen in soil can be calculated.
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