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91.
Organophosphorus and organochlorine pesticides, phosphorated plasticizers, chloroparaffins and phthalate esters contamination in bergamot essential oils produced in Calabria in the crop years 1999-2000 was studied by HRGC in connection with detectors FPD, ECD, MS. Residues of dicofol and tetradifon were found in oils from both crop years. The mean dicofol concentration was 0.26 mg/l in samples from 1999 and 0.20 mg/l in those from 2000; the mean tetradifon content was 0.06 mg/l for both the crop years. Among plasticizers, residues of diisobutyl phthalate, di-n-butyl phthalate, and bis(2-ethylhexyl) phthalate were found in samples from crop years 1999 and 2000, the mean content were 1.22 and 1.23 mg/l, 1.51 and 1.65 mg/l, 1.38 and 1.42 mg/l respectively. 相似文献
92.
Elevated concentrations of primordial radionuclides in sediments from the Reedy River and surrounding creeks in Simpsonville, South Carolina 总被引:1,自引:0,他引:1
Powell BA Hughes LD Soreefan AM Falta D Wall M DeVol TA 《Journal of environmental radioactivity》2007,94(3):121-128
A gamma-ray survey and analysis of 16 riverbed samples from the Reedy River watershed near Simpsonville, SC were conducted and compared with national and international studies of primordial radionuclides. The study reported here follows on a recent discovery of anomalously high uranium concentrations in several private well waters in the area. An HPGe spectrometer was used for quantification of gamma emitting radionuclides in the sediments. All sediments contained radionuclides from the uranium and thorium series as well as (40)K. Uranium-238 concentrations in sediment samples ranged from 11.1 to 74.2Bqkg(-1). The measured radionuclide concentrations were compared with data from UNSCEAR and NURE reports. The river and stream sediment data were augmented by in situ NaI(Tl) gamma-ray spectrometer measurements. Comparisons between the ex situ and in situ measurements indicate equivalently distributed uranium in the surface soils and stream sediments, the source of which is likely attributed to the monazite belts that are known to exist in the area. 相似文献
93.
Pantoja-Echevarría Laura María Tamburin Elena Elorriaga-Verplancken Fernando R. Marmolejo-Rodríguez Ana Judith Galván-Magaña Felipe Tripp-Valdez Arturo Lara Ariagna Jonathan M. P. Sujitha S. B. Delgado-Huertas Antonio Arreola-Mendoza Laura 《Environmental science and pollution research international》2022,29(41):61685-61697
Environmental Science and Pollution Research - Sharks are top predators and play an important role in the regulation of marine ecosystems at lower trophic position. Mustelus californicus, Sphyrna... 相似文献
94.
Sehnem Simone Pereira Luis Henrique Junior Silvio Santos Bernardy Rógis Juarez Lara Ana Cláudia 《Journal of Material Cycles and Waste Management》2022,24(3):1020-1036
Journal of Material Cycles and Waste Management - Food waste is a serious problem worldwide. There is a lot of waste in the food sector, while we still have a significant percentage of people who... 相似文献