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研究了EDTA作为提取剂 ,在 6 0℃条件下恒温振荡浸提 ,以磷钼酸喹啉重量法测定过磷酸钙中有效磷的方法 ,样本标准偏差 0 .0 76 % ,此方法经t检验与标准方法不存在显著性差异
The method of EDTA as an extractant at 60 ℃ for constant temperature oscillation and the method of quinoline phosphomolybdic acid gravimetric method for the determination of available phosphorus in the superphosphate were studied. The standard deviation of the sample was 0.076%. The t test There is no significant difference from the standard method