Benzoghiperylene

Benzoghiperylene is a name occasionally encountered in literature that is generally understood to refer to benzo[g,h,i]perylene, a large polycyclic aromatic hydrocarbon (PAH). The term is not standard nomenclature, and benzo[g,h,i]perylene is the preferred name in chemical databases.

Structure and properties: Benzo[g,h,i]perylene comprises a perylene core fused to three additional benzene rings at the g, h, and i positions, yielding a rigid, planar PAH with high molecular weight. It is highly hydrophobic, with very low water solubility, and is soluble in many nonpolar organic solvents. It is thermally and photochemically stable and exhibits characteristic fluorescence, which makes it useful in analytical and spectroscopic contexts.

Occurrence and sources: It is formed during incomplete combustion of carbon-containing materials and is a common constituent of soot, char, vehicle emissions, biomass burning, and tobacco smoke. It is frequently detected in environmental samples such as air particulates, soils, sediments, and archived dust.

Analytical use and environmental relevance: Benzo[g,h,i]perylene is one of the higher molecular weight PAHs monitored in environmental analytics as an indicator of heavy PAH fractions. It is typically quantified by methods such as high-performance liquid chromatography with fluorescence detection or gas chromatography–mass spectrometry after appropriate extraction and cleanup.

Safety: Like many high-molecular-weight PAHs, benzo[g,h,i]perylene is persistent in the environment and can pose risks to aquatic life and possibly human health through long-term exposure. Consequently, PAHs are subject to environmental monitoring and regulation in many regions.

See also: Polycyclic aromatic hydrocarbons, Benzo[a]pyrene, Perylene.