title: Determination of total chromium in environmental water samples.
abstract: It is often desirable to quantify both dissolved Cr(VI) and total Cr in samples accurately. Various protocols are now being utilized to quantify the amount of total chromium in natural waters and each of these has possible interferences. This study describes the shortcomings of each method when particulate iron is present in a water sample, and a more rigorous digestion protocol is tested. Data from bench studies as well as a field survey of 21 water utilities are presented. Additionally, field data from several hundred water utility samples are presented to illustrate the potential for incomplete recovery of total chromium using accepted protocols.
authors.affiliation: Department of Civil and Environmental Engineering, Virginia Tech University, Durham 418, Blacksburg, VA 24061, USA. jparks@vt.edu
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Parks
authors.forename: Laurie
authors.initials: L
authors.lastname: McNeill
authors.forename: Michelle
authors.initials: M
authors.lastname: Frey
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Eaton
authors.forename: Ali
authors.initials: A
authors.lastname: Haghani
authors.forename: Lisa
authors.initials: L
authors.lastname: Ramirez
authors.forename: Marc
authors.initials: M
authors.lastname: Edwards
mesh_terms: D002274:Carcinogens, Environmental / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000379:methods; D002857:Chromium / Q000032:analysis*; D003625:Data Collection; D004784:Environmental Monitoring / Q000379:methods*; D007501:Iron / Q000737:chemistry; D014873:Water Pollutants / Q000032:analysis*; D014881:Water Supply
chemical_list: D002274:Carcinogens, Environmental; D014873:Water Pollutants; D002857:Chromium; C074702:chromium hexavalent ion; D007501:Iron