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- [6] ANION-EXCHANGE ENRICHMENT AND SPECTROPHOTOMETRIC DETERMINATION OF TRACES OF GALLIUM IN NATURAL-WATERS FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1988, 332 (04): : 338 - 340
- [7] ANION-EXCHANGE SEPARATION AND SPECTROPHOTOMETRIC DETERMINATION OF LEAD TRACES IN COBALT CHEMIA ANALITYCZNA, 1978, 23 (02): : 305 - 309
- [8] RAPID-DETERMINATION OF URANIUM TRACES IN WATER AND SEA-WATER FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1978, 292 (05): : 359 - 361
- [9] DETERMINATION OF TRACES OF MOLYBDENUM IN SEA-WATER BY COMBINED ANION-EXCHANGE - GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1988, 330 (02): : 111 - 113