有机无机复混肥中有机质含量准确测定方法研究

由于有机无机复混肥组成成份的多元化,其有机质含量的定量分析对于常规灼烧法而言,分析测定值与理论值偏差太大,其结果已无实际使用价值."灼烧校正法"和"溶解残渣灼烧法"能较好地解决有机无机复混肥中其他组成成份对测定结果的干扰,且不改变原有常规测定方法的基本原理和操作步骤,简便易行.其测定结果值与理论实际值之间的统计相关系数分别为0.9999和0.9851,准确度较高,相对误差较小.可以作为企业质检和技术监督抽检单位的参考测定方法.

Determination of organic matter in organic-inorganic complex fertilizers

Since the conventional combustion methods are not applicable in accurate determination of organic matter content of organic-inorganic complex fertilizers due to their complexity of the components, new methods, Modified Combustion Method and Combustion of Residual after Rinsing, were proposed. These two methods, developed from the conventional combustion method with slight modification, efficiently eliminate the interference of the components of fertilizers. The correlation between the values determined with the new methods and the real values is statistically significant with coefficient (0.9999) and 0.9851. It is suggested that these two methods be used by factories and administrative institutions in monitoring fertilizer quality.