TY - RPRT TI - Molecular resolution and fragmentation of fulvic acid by electrospray ionization/multistage tandem mass spectrometry AU - J.A. Leenheer AU - C.E. Rostad AU - Paul M. Gates AU - E. T. Furlong AU - I. Ferrer PY - 2001 DO - 10.1021/ac0012593 UR - https://pubs.usgs.gov/publication/70023589 ID - 70023589 ER -