Chinese Standard: GB/T 32737-2016

Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method

全国土壤质量标准化技术委员会(SAC/TC 404)

本标准规定了运用紫外分光光度法测定土壤浸出液中硝态氮的原理、试剂、仪器、分析步骤、结果计算与表示、精密度、质量保证和控制等。

本标准适用于土壤中硝态氮的测定。

本方法对土壤硝态氮的检出限为0.5 mg/kg，定量限为1 mg/kg。〓

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