Polycyclic Aromatic Hydrocarbons in Chinese Raw Coal

Abstract

With the rapid economic and social development of China, the attention to environment issue is higher and higher. Current, toxic and hazardous substances polycyclic aromatic hydrocarbons (PAHs) has been detected in the air, water, sediments of the river (or lake) and soil. Part of these PAHs come from (1) volatile of PAHs in solids phase or liquids phase in raw coal ,(2) raw coal incomplete combustion (3) PAHs hydrolyze in a reducing atmosphere. As the basis of PAHs discharging in the process of coal using, it is necessary to summary extraction, purification, analysis of the PAHs in raw coal, conclude species and content of PAHs in raw coal, analysis the impact factors of PAHs distribution, discovered the deficiencies in current research and the future research direction.

Pollution Characteristics and Risk Evaluation of PAHs in Subsidence Water Bodies in Huainan Coal Mining Area, China

“…While promoting economic development, this has also caused certain eco-environmental problems in mining areas. In the process of coal mining and utilization, some inorganic or organic substances are released from coal and enter the atmosphere, soil, and water bodies [2], causing serious pollution in these environmental media. Long-term mining activities have resulted in surface subsidence, which have caused irreversible impacts on the geological environment of coal mining areas [3].…”

“…The research objectives of this article were as follows: (1) to compare the contents of PAHs in different subsidence water bodies and to evaluate their pollution status; (2) to analyze the composition characteristics and source distribution of PAHs using Pearson correlation analysis and factor analysis; (3) to evaluate the ecological risk of PAHs by using the risk quotient (RQ) method and the species sensitivity distribution (SSD) model, and to evaluate the human health risk in order to provide a theoretical basis for the risk management and their scientific utilization.…”