Dimitrova-Koleva, Boryana Determination of trace elements in natural waters by inductively coupled plasma time of flight mass spectrometry after flow injection preconcentration in a knotted reactor. [electronic resource] - Talanta Jan 2007 - 44-50 p. digital Publication Type: Journal Article ISSN: 1873-3573 Standard No.: 10.1016/j.talanta.2006.03.014 doi