Record Display for the EPA National Library Catalog


Main Title Pentachlorophenol in the Environment. Evidence for Its Origin from Commercial Pentachlorophenol by Negative Chemical Ionization Mass Spectrometry.
Author Kuehl, Douglas W. ; Dougherty, Ralph C. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1980
Report Number EPA-600/J-80-183;
Stock Number PB81-129918
Additional Subjects Environmental surveys ; Chemical analysis ; Chlorine organic compounds ; Samples ; Separation ; Mass spectroscopy ; Industrial wastes ; Tissue(Biology) ; Distillation ; Concentration(Composition) ; Reprints ; Phenol/pentachloro ; Phenol/tetrachloro ; Chemical ionizaton mass spectroscopy
Library Call Number Additional Info Location Last
NTIS  PB81-129918 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Commercial pentachlorophenol (PCP) contains significant quantities of tetrachlorophenol (TCP). The occurrence of TCP in environmental samples provides a chemical marker for PCP originating from commercial formulations. Negative chemical ionization mass spectrometry has been used to examine a commercial PCP formulation and a series of environmental and human samples. Tetrachlorophenol was determined by the ion current at m/z 229, tetrachlorophenoxide, and PCP was determined by the ion current at m/z 267, pentachlorophenoxide. The ion current at m/z 267 may include contributions from the oxygen/chloride exchange product of hexachlorobenzene, an environmental precursor of PCP. The ratio of PCP to TCP in Dowcide G-ST, a commercial PCP formulation, was 2.5 plus or minus 0.1. The ratio of m/z 267 to m/z 229 in a jellyfish, Mnemiopsis macrydi, from the Gulf of Mexico was 2.7 plus or minus 0.1, in human semen it was 4.1 plus or minus 0.1, and in human adipose tissue it was 15.5 plus or minus 0.1. PCP in the semen samples was concentrated in the sperm cells by a factor of 9.