BACKGROUND Polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDFs) are highly toxic persistent organic pollutants (POPs), which can cause various health outcomes, such as cancer. As a part of the National and Sub-national Burden of Disease Study (NASBOD), we aimed to estimate dioxins and furans national emissions, identify their main sources, estimate daily intake doses, and assess t...

Polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) have been recognised as environmental pollutants for decades but their occurrence in food has only recently reported. They elicit the same type of toxic response analogous polychlorinated (PCDD/Fs) with similar potencies effects, share origins - inadvertent production during combustion by-products industrial chemicals. Surprisingly, P...

This paper presents the results of the survey on polychlorinated dibenzodioxin and dibenzofuran (PCDD/F) emissions to the air in cement manufacture sector carried out in Spain over the period 2000-2003. It includes 89 samples from 41 furnaces, which represents 69.5% of coverage. It constitutes the subsequent stage of the monitoring program presented previously, enlarging number of facilities as...

Atmospheric deposition is an important pathway for air pollutants entering the environment. In order to better understand both dry and wet deposition of PCDD/Fs in ambient air, two cities – Guangzhou and Nanjing in Southern China, were investigated. The monthly dry deposition fluxes of total-PCDD/Fs-WHO2005-TEQ were in the range of 60.6– 560 and 104–1160 pg WHO2005-TEQ m month during 2014 in Gu...

The concentrations of PCDD/Fs, PCBs, and metals were determined in soil and air samples collected near a municipal solid waste incinerator (MSWI) located in Mataró (Catalonia, Spain), being the health risks for the population living in the vicinity of the facility subsequently assessed. We also established the temporal trends with respect to previous surveys performed in the same zone. In gener...

Domestic and industrial wastewater treatment plants, and petrochemical industries within the Houston Ship Channel (HSC) located in Houston, Texas, USA, were sampled for sewage sludge and analysed for polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). The United States Environmental Protection Agency (USEPA) method 1613B which employs high resolution gas chromatograph...

This study reports the results of the gas phase oxidation of alpha-cypermethrin, a common insecticide, elucidating the decomposition pathways and formation of toxic species such as polychlorinated dibenzo-pdioxins and polychlorinated dibenzofurans (PCDD/F) and their precursors. Conditions investigated are similar to those encountered in post combustion and cooling-down zones of forest, agricult...

Introduction In recent years, polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and nonand monoortho-substituted polychlorinated biphenyls (dioxin-like PCBs) have received considerable attention because of their extreme persistence, bioaccumulation and toxic potential to wildlife. The concentrations of these compounds in wildlife were reported in recent years 1, . And particularl...

Concentrations of polychlorinated dibenzofurans (PCDFs) and polychlorinated dibenzo-p-dioxins (PCDDs) in Tittabawassee River floodplain soils and biota downstream of Midland, Michigan, USA, are greater than regional background concentrations. From 2005 to 2008, a multiple lines of evidence approach was utilized to evaluate the potential for effects of PCDD/DFs on American robins (Turdus migrato...

Colloids such as surfactant micelles can act as transport facilitators for highly lipophilic, generally immobile contaminants in soil. Following a fire at a pesticide facility, this study investigated vertical and lateral migration of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in heterogeneous soil beneath bunded ponds, where contaminated wastewater containing high surfactant...