Gong, Q [Study on the determination of free iron oxide in soil extract by FIA-ICP-AES]. [electronic resource] - Guang pu xue yu guang pu fen xi = Guang pu Apr 2000 - 229-31 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1000-0593 Subjects--Topical Terms: Ferric Compounds--analysisFlow Injection AnalysisSoil--analysisSpectrophotometry, Atomic--methods