TY - RPRT TI - Identification of ionic chloroacetanilide-herbicide metabolites in surface water and groundwater by HPLC/MS using negative ion spray AU - Imma Ferrer AU - E.M. Thurman AU - Damia Barcelo PY - 1997 DO - 10.1021/ac9704671 UR - https://pubs.usgs.gov/publication/70019504 ID - 70019504 ER -