polycyclic

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Related to polycyclic hydrocarbons: Polynuclear aromatic hydrocarbons

polycyclic

having two or more usually fused chemical ring structures in their molecule.

polycyclic hydrocarbons
thyroid initiators, i.e. they increase the incidence of thyroid tumors.
References in periodicals archive ?
According to Table 3 and Figure 6, the main compound groups in the benzene extract obtained in the pyrolysis of Jordanian oil shale in benzene, water or without any solvent at 380 oC are polycyclic hetero-atomic compounds and polycyclic hydrocarbons surpassing totally 40-50% of OM.
Scientists in Holland found church air was considerably higher in carcinogenic polycyclic hydrocarbons than air beside roads used by more than 45,000 vehicles daily.
AHREs respond to numerous polycyclic hydrocarbons and halogenated coplanar molecules such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD; dioxin) and polychlorinated biphenyls.
For environmental analysis, method or compound group specific GC CARE columns allow unambiguous component identification at low detection limits for various groups of organic pesticides, polycyclic hydrocarbons, volatiles or PCBs.
The professor is engaged in the production of high molecular weight, planar, partially poorly soluble and sublimable and ionic polycyclic hydrocarbons.

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