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作者报道了河水中微量磷的X射线荧光分析方法。在酸性条件下磷酸盐与铝酸盐、8-羟基喹啉生成黄色结晶的三元络合物,其组成为(C_9H_7ON)_3·H_7[P(Mo_2O_7)_6]·2 H_2O、然后进行X射线荧光(XRF)分析。仪器岛津制VF-320 XRF分析装置,X射线管为东芝制的AFX-66 A,Rh阴极管为靶。试剂磷酸根离子标准液(PO_4~(3-):1 mg/ml):取110℃干燥的特级磷酸二氢钾0.1433g溶于水,使成100 ml。2.5%钼酸铵溶液:取特级钼酸铵2.5 g溶于水,使成100 ml。1%8-羟基喹啉乙醇溶液:取特级8-羟基喹啉2 g,
The authors report the X-ray fluorescence analysis of trace amounts of phosphorus in river water. Under acidic conditions, phosphate and aluminate, 8-hydroxyquinoline generated yellow crystal ternary complex, its composition is (C_9H_7ON) _3 · H_7 [P (Mo_2O_7) _6] · 2 H_2O, and then X-ray Fluorescence (XRF) analysis. Instrument Shimadzu VF-320 XRF analyzer, X-ray tube made of Toshiba’s AFX-66 A, Rh cathode for the target. Reagent phosphate ion standard (PO_4 ~ (3 -): 1 mg / ml): Take 110 g of dried superbly-treated monobasic potassium phosphate 0.1433 g in water to make 100 ml. 2.5% ammonium molybdate solution: Take premium grade ammonium molybdate 2.5 g dissolved in water to make 100 ml. 1% 8-hydroxyquinoline ethanol solution: Take the premium 8-hydroxyquinoline 2 g,