BioReagent 级 ，适用于对基线干扰要求严格的色谱和分析工作流程。
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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，被氧化后变为硝态氮。土壤中硝态氮是高等植物吸收氮的主要形式之一，其含量直接关系到作物的产量与品质。 测定原理：在浓酸条件下，NO₃⁻与水杨酸反应，生成硝基水杨酸，硝基水杨酸在碱性条件下（PH>12）呈黄色，在一定范围内，其颜色深浅与含量成正比，可比色测定计算得硝态氮含量。
Nitrate nitrogen refers to the nitrogen element contained in nitrates. Organic matter in the soil decomposes to form ammonium salts, which are oxidized into nitrate nitrogen. As one of the primary forms of nitrogen absorbed by higher plants, the nitrate nitrogen content in soil directly affects crop yield and quality. Testing Principle: Under strongly acidic conditions, NO₃⁻ reacts with salicylic acid to form nitrosalicylic acid. In an alkaline environment (pH > 12), nitrosalicylic acid exhibits a yellow color. Within a certain range, the intensity of the color is proportional to its concentration, allowing for the quantitative determination of nitrate nitrogen content through colorimetric measurement.
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