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腐植酸是草炭中有机质的主要成分。通常呈黑色或棕色,是较复杂的高分子化合物。用草炭为原料制取的腐植酸类肥料是良好的土壤改良剂、作物生长刺激素。因此,对原料中腐植酸含量的测定是非常重要的。测定腐植酸的方法有离心重量法、腐植酸重量法、重铬酸钾容量法和比色法。离心重量法由于残渣与清液难以彻底分离而使测定结果偏差较
Humic acid is the main component of organic matter in peat. Usually black or brown, is more complex polymer compounds. Humic acid fertilizer made from peat is a good soil conditioner and crop growth stimulator. Therefore, the determination of humic acid content of raw materials is very important. Determination of humic acid by centrifugal gravimetric method, humic acid gravimetric method, potassium dichromate volumetric method and colorimetric method. Centrifugal gravimetric method due to the residue and the supernatant is difficult to completely separate the measurement results deviation