文献类型：期刊文献

中文题名：流动分析仪快速测定土壤全磷含量

英文题名：Rapid determination of total phosphorus in soil by flow analyzer

作者：李朝英[1] 郑路[1,2]

第一作者：李朝英

机构：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600;[2]广西友谊关森林生态系统国家定位观测研究站,广西凭祥532600

年份：2020

期号：4

起止页码：266-270

中文期刊名：中国土壤与肥料

外文期刊名：Soil and Fertilizer Sciences in China

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：广西自然科学基金马尾松人工林采伐剩余物分解及提升地力研究(No.2013GXNSFAA019106)。

语种：中文

中文关键词：流动分析仪;土壤;全磷

外文关键词：flow analyzer;soil;total phosphorus

分类号：S153.6

摘要：土壤经碱熔法消解,对连续流动分析仪和钼锑抗比色法所测土壤全磷含量进行比较分析,探讨流动分析仪测定碱熔法土壤全磷含量的可行性。结果表明,两种方法测定结果经t检验,双尾P(T≤t)=0.525 4,无显著性差异。回归直线方程y(流动分析仪-P)=1.060 6x(钼锑抗比色法-P)-0.0191,R=0.990 0。流动分析仪测定碱熔法土壤全磷的加标回收率在98.09%~102.89%,3个样品重复测定5次的相对标准偏差为1.20%~2.07%。流动分析仪精密度与准确性高,试剂用量少,检测效率高,适用于批量土壤全磷的检测分析。
Soil samples were digested by alkali melting method.The contents of total phosphorus in soil determined by continuous flow analyzer and antimony colorimetric methods were compared and analyzed.The feasibility of determining total phosphorus content in soil by continuous flow analyzer was discussed.The results showed that there was no significant difference and there was a good correlation between the two methods.The regression linear equation was y(flow analyzer-P)=1.0606x(molybdenum-antimony anti-colorimetric method-P)-0.0191,R=0.9900.The recovery of total phosphorus in alkali-fused soils was 98.09%~102.89%by flow analyzer,and the relative standard deviation was 1.20%~2.07%after repeated determination of three samples for five times.Flow analyzer had high precision and accuracy,less reagent consumption and high detection efficiency.It was suitable for the detection and analysis of total phosphorus for massive soil samples.