Identification and quantification of pesticides, industrial chemicals, and organobromine compounds of medium to high polarity in the North Sea.
Solid-phase extraction of 20 L seawater samples enabled the enrichment and determination of a wide array of organic substances, including compounds of medium to high polarity, in the pg/L-range. A number of contaminants was detected and quantified throughout the North Sea, among them the pesticides dichlobenil (2,6-dichlorobenzonitrile), metolachlor and terbuthylazine as well as the industrial chemicals dichloropyridines (DCPy, 4 isomers) and nitrobenzene. Concentrations attained values up to 1.4 ng/L for dichlobenil, 0.83 ng/L for terbuthylazine, 0.61 ng/L for metolachlor, 0.13 ng/L for 2,6-DCPy, 4.37 ng/L for nitrobenzene and 1-8 ng/L for tris(chloropropyl)phosphates (TCPP). A number of North Sea water samples was screened for non-target compounds, revealing the presence of further contaminants, e.g., lindane and TCPP, as well as several biogenic and/or anthropogenic organobromine substances, among which bromoindols, -phenols and -anisoles were identified.
Weigel
Stefan
S
Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany.
Bester
Kai
K
Hühnerfuss
Heinrich
H
D017605:Bromine Compounds / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000379:methods; D004784:Environmental Monitoring; D007220:Industrial Waste; D009659:North Sea; D010575:Pesticides / Q000032:analysis*; D012016:Reference Values; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
D017605:Bromine Compounds; D007220:Industrial Waste; D010575:Pesticides; D014874:Water Pollutants, Chemical