標題: ASTM E 248-2002 用焦磷酸鹽(電勢測定)法測定錳礦石中錳含... [打印本頁] 作者: 兌水 時間: 2009-10-29 19:40 標題: ASTM E 248-2002 用焦磷酸鹽(電勢測定)法測定錳礦石中錳含... E248-02 Test Method for Determination of Manganese in Manganese Ores by Pyrophosphate Complexed Permanganate Potentiometric Titrimetry