4-(2-吡啶偶氮)间苯二酚分光光度法测定酸泥中铌
张光华
Determination of niobium in acid sludge by4-(2-pyridylazo)-resorcinol spectrophotometry
ZHANG Guang-hua
冶金分析 . 2012, (9): 60 -63 .