Polychlorinated naphthalene （PCNs） have similar structure and toxicity with dioxin class （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main sources of ...Polychlorinated naphthalene （PCNs） have similar structure and toxicity with dioxin class （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main sources of PCNs in the environment and environmental fate, introduced emphasis with the emission characteristics of PCNs in burning and metal smelting process, this article summarized the current PCNs city environmental and biotic pollution level and distribution characteristics, summarized and discussed related research of PCNs pollution level and distribution characteristics near the various environmental media and organisms in the city. Finally, the paper put forward the research progress of PCNs in related research areas and challenges.展开更多
Polychlorinated naphthalene （PCNs） is similar structure and toxicity of dioxin （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main source of PCNs in the...Polychlorinated naphthalene （PCNs） is similar structure and toxicity of dioxin （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main source of PCNs in the environment and environmental fate, sludge PCNs pollution level in 1.48-28.21 ng/g （dry weight）, PCN-TEQs content is in 0.11-2.45 pg/g （dry weight）, far below the content of other areas in foreign countries. The results showed that the sources of wastewater, sewage treatment plant is an important factor affecting the level of polychlorinated naphthalene pollution. Discussion on the distribution characteristics of sludge in polychlorinated naphthalene congeners, found that the distribution of PCNs congeners in all of the samples is largely the same, it is mainly two chloride and three chloro naphthalene, it showed that the pollution source has a certain resemblance. Research shows that, polychlorinated naphthalenes city sludge mainly comes from industrial pollution sources; in addition, an important source of waste incineration, burning heat treatment process is caused by polychlorinated naphthalene pollution.展开更多
文摘Polychlorinated naphthalene （PCNs） have similar structure and toxicity with dioxin class （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main sources of PCNs in the environment and environmental fate, introduced emphasis with the emission characteristics of PCNs in burning and metal smelting process, this article summarized the current PCNs city environmental and biotic pollution level and distribution characteristics, summarized and discussed related research of PCNs pollution level and distribution characteristics near the various environmental media and organisms in the city. Finally, the paper put forward the research progress of PCNs in related research areas and challenges.
文摘Polychlorinated naphthalene （PCNs） is similar structure and toxicity of dioxin （PCDD/Fs）, it can be detected in the global environmental and biological samples. This paper introduces the main source of PCNs in the environment and environmental fate, sludge PCNs pollution level in 1.48-28.21 ng/g （dry weight）, PCN-TEQs content is in 0.11-2.45 pg/g （dry weight）, far below the content of other areas in foreign countries. The results showed that the sources of wastewater, sewage treatment plant is an important factor affecting the level of polychlorinated naphthalene pollution. Discussion on the distribution characteristics of sludge in polychlorinated naphthalene congeners, found that the distribution of PCNs congeners in all of the samples is largely the same, it is mainly two chloride and three chloro naphthalene, it showed that the pollution source has a certain resemblance. Research shows that, polychlorinated naphthalenes city sludge mainly comes from industrial pollution sources; in addition, an important source of waste incineration, burning heat treatment process is caused by polychlorinated naphthalene pollution.
