Application of a pentafluorobenzyl bromide derivatization method in gas chromatography/mass spectrometry of trace levels of halogenated phenols in air, water and sediment samples.
An analytical method using pentafluorobenzyl bromide (PFBB) derivatization and gas chromatography/mass spectrometry (GC/MS) has been applied to identify and quantify chloro-, bromo- and dichlorophenols in air, water and sediment samples. Phenols in air sample were collected with a PS-2 Sep-PAK cartridge, and eluted with 2-propanol. For water and sediment samples, liquid-liquid extraction with dichloromethane was carried out, and the solvent was exchanged to 2-propanol. The phenols in the solution reacted with PFBB to form the corresponding pentafluorobenzyl esters. After extracting the derivatives into hexane, the determination was carried out by GC/MS with selected-ion monitoring. The detection limits of phenols in air, water and sediment were 0.0033 - 0.0073 microg/m3, 0.0066 - 0.0147 microg/L and 0.33 - 0.73 microg/kg, respectively. More than 90% recoveries of the halogenated phenols were obtained from real environmental samples spiked by the halogenated phenols. The three isomers of mono-chlorophenols were detected in sediment samples in the range of 5.2 - 9.2 microg/kg in wet weight basis.
Hanada
Yoshifumi
Y
Kitakyushu City Institute of Environmental Sciences, Tobata, Japan.
Imaizumi
Iwao
I
Kido
Kozo
K
Tanizaki
Teizi
T
Koga
Minoru
M
Shiraishi
Hiroaki
H
Soma
Mitsuyuki
M
D000388:Air / Q000032:analysis; D000393:Air Pollutants / Q000032:analysis*; D002733:Chlorophenols / Q000032:analysis; D005464:Fluorobenzenes / Q000032:analysis*; D005618:Fresh Water / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis*; D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D010636:Phenols / Q000032:analysis*; D012623:Seawater / Q000032:analysis; D014873:Water Pollutants / Q000032:analysis*; D005466:Fluorocarbons
D000393:Air Pollutants; D002733:Chlorophenols; D005464:Fluorobenzenes; D006846:Hydrocarbons, Halogenated; D010636:Phenols; D014873:Water Pollutants; C025063:pentafluorobenzyl bromide; D005466:Fluorocarbons; C116190:3,5-dichlorophenol