有机无机复合肥中有机质含量测定误差来源分析

Discussion on the Determination of Organic Matter Content in Organic Inorganic Compound Fertilizer

有机无机复合肥中有机质是影响化肥性能的重要因素,有机质含量是判定有机无机复合肥产品品质的一个关键指标,其准确测定非常重要。结合《有机无机复混肥料》(GB/T 18877—2020)中有机质含量试验数据处理公式,对有机无机复混合料中有机质含量测定的误差来源进行分析,得出误差主要来源于计算误差、氧化校正系数误差、经验转换系数误差和无机物干扰误差的结论,可为将来分析技术的改进提供参考。

Organic matter in organic inorganic compound fertilizers is an important factor affecting the performance of fertilizers.The content of organic matter is a key indicator for determining the quality of organic inorganic compound fertilizer products,and its accurate measurement is very important.Based on the formula for processing organic matter content test data in the“Organic Inorganic Compound Fertilizer”(GB/T 18877—2020),the sources of errors in the determination of organic matter content in organic inorganic compound mixtures were analyzed.The conclusion was drawn that the errors mainly come from calculation errors,oxidation correction coefficient errors,empirical conversion coefficient errors,and inorganic interference errors,which can provide reference for future improvement of analytical technology.