在制备土壤和肥料的锰待测液中,加入高碘酸钾显色液,然后加入氨水调整溶液的酸度,高碘酸钾在室温条件下瞬间将二价锰氧化成紫红色的高锰酸根离子,稳定时间在48 h以上。该法比沸水水浴加热30 min显色的方法快速,显色液加入方便,测定结果准确,具有推广价值。 Preparation of soil and fertilizers manganese test solution, adding potassium periodate color solution, and then add ammonia to adjust the solution acidity, potassium periodate at room temperature under the conditions of bivalent manganese oxidation into purple permanganate Ions, stable time in 48 h or more. The method than the boiling water bath heated 30 min color fast method, easy to add color reagent, the determination of the results is accurate, with promotional value.