نتایج جستجو برای: pcdfs

تعداد نتایج: 401  

Journal: :Water research 2009
Jianping Luo Mei Ma Jinmiao Zha Zijian Wang

Aryl hydrocarbon receptor agonistic (Ah-agonistic) effects of 23 sediments from Wenyu River in Beijing, China were evaluated using the H4IIE cell bioassay. Five samples were selected for chemical analysis of most concerned Ah-agonists, i.e. polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs). All raw sediment extracts i...

Journal: :Journal of Environmental Chemistry 1998

Journal: :Chemosphere 2012
Hiroyuki Fujita Katsuhisa Honda Ryoji Iwakiri Keerthi S Guruge Noriko Yamanaka Nobuhiko Tanimura

In this study, we investigated the suppressive effect of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (DL-PCBs) transfer from the feed to the eggs of laying hens by using activated carbon as a feed additive. Four groups of six hens (White Leghorn egg-layers; age, 11weeks) were housed as two control groups and two exp...

Journal: :Chemosphere 2007
Satoshi Nakai Saeko Kishita Yugo Nomura Masaaki Hosomi

Polychlorinated dibenzothiophenes (PCDTs) in sediment, soil, and fly ash samples collected in Japan were analyzed and their dioxin-like endocrine-disruption potential and photodegradability investigated. PCDTs were detected in all three types of sample, although the concentrations were lower than those of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). An Ah...

Journal: :Arhiv za higijenu rada i toksikologiju 2001
B Krauthacker E Reiner

Human milk and food of animal origin (milk, meat, and fish) have been analysed over several decades for the DDT-complex, PCBs, HCB, and HCH-isomers. Human milk has also been analysed for PCDDs and PCDFs. Human milk samples were collected in six inland sites and one island, and food samples in marketplaces and individual households throughout Croatia. All human milk samples contained DDE and PCB...

Journal: :Environmental toxicology and chemistry 2012
Carey L Friedman Mark G Cantwell Rainer Lohmann

Freely dissolved and gas phase polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were measured in the water column and atmosphere at five locations within Newark Bay (New Jersey, USA) from May 2008 to August 2009 with polyethylene (PE) passive samplers. Mono- to octa-CDDs and mono- to hepta-CDFs were detected in bottom and surface waters at ≤ 20 pg/L with no cl...

2008
Lesa L. Aylward Julie E. Goodman Gail Charnley Lorenz R. Rhomberg

BACKGROUND Risk assessment of human environmental exposure to polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/PCDFs) and other dioxin-like compounds is complicated by several factors, including limitations in measuring intakes because of the low concentrations of these compounds in foods and the environment and interspecies differences in pharmacokinetics and responses. OBJECTIVES W...

Journal: :Environmental Health Perspectives 1985
T Kashimoto H Miyata S Fukushima N Kunita G Ohi T C Tung

Individual blood samples obtained from yusho and yu-cheng patients who had been poisoned by ingesting contaminated cooking oils, from workers occupationally exposed to polychlorinated biphenyls (PCBs) and from unexposed individuals were analyzed for PCBs, polychlorinated quaterphenyls (PCQs) and polychlorinated dibenzofurans (PCDFs) by gas chromatography and mass spectrometry. PCBs were found i...

Journal: :Journal of hazardous materials 2008
Chung-Hsin Wu How-Yong Ng

This study employed direct photolysis to treat mixed polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) solutions. The solutions included a synthetic standard 17 2, 3, 7, 8-substituted congeners solution and a practical liquid extracted from the bag filter ash of an electric arc furnace. Additionally, this work utilized a coupled catalyst (ZnO/SnO2) under UV irr...

Journal: :Occupational and Environmental Medicine 2002

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