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GB20412[1]提取钙镁磷肥有效磷是用柠檬酸溶液,采用往复振荡器或回旋振荡器振提1h。由于钙镁磷肥是一种较细的粉末,质重,有一定黏性,回旋提取过程中,容易在容量瓶底部的中心形成粘连堆积现象,影响提取的完全,导致测定结果
GB20412 [1] Extraction of calcium magnesium phosphate Available phosphorus is the use of citric acid solution, using reciprocating shaker or swing oscillator shaker 1h. As the calcium magnesium phosphate is a finer powder, weight, has a certain viscosity, cyclotron extraction process, easy to form the bottom of the volumetric flask at the center of the formation of adhesion accumulation, affecting the extraction is complete, leading to the determination of the results