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对复混肥料中总氮含量测定与探讨 被引量:1

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摘要 本文重点阐述在复混肥料总氮含量测定过程中,对于不知是否含有硝酸态氮的未知肥料如何检测进行探讨。在复混肥料中,组成总氮量的原料主要有:硫酸铵、氯化铵、磷铵、碳铵、尿素、硝酸盐以及有机肥等。检验方法根据GB8572以及GB/T17767.1-99标准中的规定,将试样进行分解,即经过还原、消化后,使各种形态的氮转化为氨态氮,加入过量碱液,使铵盐分解,经过蒸馏。
作者 张桂娟
出处 《监督与选择》 2000年第6期24-24,共1页
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