Determination of total chromium in environmental water samples.
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.
Parks
Jeffrey L
JL
Department of Civil and Environmental Engineering, Virginia Tech University, Durham 418, Blacksburg, VA 24061, USA. jparks@vt.edu
McNeill
Laurie
L
Frey
Michelle
M
Eaton
Andrew D
AD
Haghani
Ali
A
Ramirez
Lisa
L
Edwards
Marc
M
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
D002274:Carcinogens, Environmental; D014873:Water Pollutants; D002857:Chromium; C074702:chromium hexavalent ion; D007501:Iron