摘要
研究了CaHPO_4、Ca(H_2PO_4)_2、MgHPO_4、(NH_4)_2HPO_4、K_2HPO_4、KH_2PO_4、磷灰石、鸟粪石、磷铝石及红磷铁矿在乙酸-乙酸钠体系中的溶解行为,建立了测定活性磷的条件。样品中的活性磷用乙酸-乙酸钠混合溶液溶解,用光度法或滴定法进行测定。二十多种共存矿物在一定范围内不干扰测定。此新方法应用于磷矿、磷肥和土壤中活性磷的测定,获得满意的效果。
Conditions for the efficient extraction of active phosphorus in phosphorus ores, phosphate fertilizers, and soils were investigated, and a digestion with 1 mol/L acetic acid and sodium acetate mixture was found to be appropriate. The extracted phosphorus was determined by photometry or titrimetry. Interference effects of some twenty coexisting minerals were tested and tolerable amounts were given. The method gives satisfactory results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1989年第1期35-39,共5页
Rock and Mineral Analysis
