1.
Anal Chem
; 58(12): 2425-8, 1986 Oct.
Article
in English
| MEDLINE
| ID: mdl-3789398
2.
Science
; 210(4468): 385-90, 1980 Oct.
Article
in English
| MEDLINE
| ID: mdl-6159682
Subject(s)
Dioxins , Fires , Air Pollutants/analysis , Chemical Phenomena , Chemistry , Chromatography, High Pressure Liquid , Dioxins/analysis , Polychlorinated Dibenzodioxins/analysis , Power Plants , Smoke/analysis , Soil Pollutants/analysis , Vehicle Emissions/analysis , Water Pollutants, Chemical/analysis
3.
J Chromatogr Sci
; 18(8): 370-4, 1980 Aug.
Article
in English
| MEDLINE
| ID: mdl-7440691
ABSTRACT
The title compounds are on the EPA priority pollutant list. Therefore, a sensitive method for their measurement is required. The liquid chromatographic method employs a LiChrosorb RP-2 column, 45% acetonitrile (pH 5) mobile phase, UV detection at 280 nm, and electrochemical detection at +0.70 volts applied potential. The three-electrode electrochemical cell described contains a tubular carbon-black/polyethylene working electrode that permits detection of sub-part-per-billion levels in a 50 microliter injection permits detection of 2 ppb benzidine and dichlorobenzidine. Recoveries from fortified wastewater of benzidine at 1 to 6 ppb and dichlorobenzidine at 3 to 12 ppb levels were 83% and 87%, respectively.