共 6 条
- [1] COLORIMETRIC DETERMINATION OF NIOBIUM WITH THIOCYANATE [J]. ANALYTICAL CHEMISTRY, 1951, 23 (12) : 1813 - 1816
- [2] COLORIMETRIC DETERMINATION OF NIOBIUM USING THIOCYANATE [J]. ANALYTICAL CHEMISTRY, 1952, 24 (07) : 1169 - 1173
- [3] THE ABSORPTIOMETRIC DETERMINATION OF NIOBIUM IN LOW-GRADE ORES [J]. ANALYST, 1954, 79 (939) : 327 - 338
- [6] 1951, STANDARD METHODS ANA