The molecular biological methods which more rapid,easier,less expensive and high-throughput for dioxins and dioxins similar compounds testing and the future development of these rapid bio-analytical approach for dioxins were descried.

The source of the representatives of POP(polychlorinated biphenyls and dioxin)in water and the contaminative status are summarized.

By comparison of products from pyrolysis and catalysis on chlorophenol, it is found that the pyrolysis will produce high toxic material, such as dioxins, but.

The treatment situation of medical wastes in China is introduced,the mechanism of dioxins production and control measures in procedure of waste thermal treatment are analyzed,and the principle and advantages for treating medical wastes by pyrolysis and gasification,especially its inhibitory effect on the synthesis of dioxins are discussed.

Sources and toxicity of dioxins were reviewed.

In order to understand the effect of different metal compounds on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) formation from polycyclic aromatic hydrocarbons (PAHs),a series of experiments were conducted with different metal compounds as catalysts and acenaphthylene (AcPy) on a fixed-bed reactor.