Inorganic chemicals for industrial use—General method for the determination of total nitrogen content—Nessler's reagent colorimetric method
全国化学标准化技术委员会无机化工分会(SAC/TC 63/SC 1)
本标准规定了无机化工品产中总氮含量测定的通用方法纳氏试剂比色法的方法提要、安全提示、一般规定、试剂、仪器、设备、分析步骤和结果计算。
本方法适用于无机化工产品中微量无机氮化合物(包括硝酸盐、亚硝酸盐及铵盐)总量的测定。检测范围为0.05 μg/mL～0.8 μg/mL(以N计)。
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