肥料和土壤调理剂 黄腐酸含量及碳系数的测定方法
Fertilizers and soil conditioners—Determination of fulvic acid content and carbon coefficient
2024-09-29
GB/T 35107-2017
矿物源腐殖酸肥料中可溶性腐殖酸含量的测定
Determination of soluble humic acid content for mineral humic acid fertilizers
2017-12-29
GB/T 35106-2017
矿物源游离腐殖酸含量的测定
Determination of unbound humic acid content from mineral source
2017-12-29
GB/T 34766-2017
矿物源总腐殖酸含量的测定
Determination of total humic acid content from mineral source
2017-11-01
BS ISO 19822-2018
Fertilizers and soil conditioners. Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materials
肥料和土壤调理剂 肥料材料中腐殖酸和疏水黄腐酸浓度的测定
2018-08-14
ISO 19822-2018
Fertilizers and soil conditioners — Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materials
使用碱性提取法 疏水性吸附树脂测定商业固体和液体腐殖质中的腐殖酸和重铬酸盐测定