The global exposure of man to dioxins: A perspective on industrial waste incineration

Photodegradation of Polychlorinated Dibenzo-p-dioxins in Liquid Samples by Near UV Light Irradiation

“…The 75 PCDD homologs show different toxicities depending on the degree of chlorination and on the position of the chlorine atoms in the dibenzo ring, the most toxic ones being the tetrachlorosubstituted (2,3). They are chemically stable and able to bioaccumulate in organisms and are thus extremely significant for the environment (4)(5)(6). The fate and diffusion of PCDDs in the environment may involve volatilization, atmospheric transport, oxidation, reduction, bioaccumulation, bio-and photodegradation, etc.…”

“…This process is mainly caused by the near-UV component of sunlight and is probably the most important mechanism of dioxin removal from the environment (7,8). Several studies have been published on the photolysis of dioxins in both solution and gas phases (6)(7)(8)(9)(10)(11)(12)(13)(14)(15) but the mechanism involved is not fully understood yet. Dechlorination is generally reported as the predominant reaction and dechlorinated products have been identified in different solvents and under different light exposure conditions.…”

Cluster Analysis for Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans Concentrations in Southern Taiwan

“…2 That is why many countries only regulate these 17 compounds. Previous research has identified municipal solid waste incinerators (MSWIs) as the largest contributors of PCDD/Fs to the environment in the United States, 3 England, and Japan, 4 although the situation is different in Taiwan. 1 As of 2008, there are 27 MSWIs in Taiwan, averaging 7.5 incinerators per 10,000 km 2 .…”

Analysis of the sustainability of reusing industrial wastes as energy source in the industrial sector of Taiwan

“…The incineration and combustion processes could be the major sources of polychlorinated organics like dioxins, which may be formed as a result of incomplete combustion and have been found in the stack gas of MSW and industrial waste incinerators (Jones et al, 1993;Chen, 2004). These compounds are of concern mainly due to their high toxicity in the laboratory animals, and endocrinedisrupting in the wildlife and humans (Chen, 2004).…”