Abstract To examine the gas-phase hydrogen/deuterium exchange on large, astronomically relevant cationic polycyclic aromatic hydrocarbons (PAHs), ion-molecule collision reaction between C 42 H 18 + (hexa-peri-hexabenzocoronene cations, HBC ) and D atoms is studied. The experimental results show that deuterated cations ([C m n ] , +2 ∗ up to ∼54) are efficiently formed, an effective determined. ...

The level and source of 16 polycyclic aromatic hydrocarbons (PAHs) were investigated in the surface sediments from the Gorgan Bay, Caspian Sea. The sum of 16 PAHs (ΣPAH16) concentrations varied from 107.87 to 516.18 ng g(-1)dry weight, with average value of 270.96 ± 150.47 ng g(-1)dry weight. Ecological risk assessment of PAHs, indicated that adverse biological effects caused by acenaphthene, n...

Estimation of carcinogenic potency based on analysis of 16 polycyclic aromatic hydrocarbons (PAHs) ranked by U.S. Environmental Protection Agency (EPA) is the most popular approach within scientific and environmental air quality management communities. The majority of PAH monitoring projects have been focused on particle-bound PAHs, ignoring the contribution of gas-phase PAHs to the toxicity of...

Levels of sixteen polycyclic aromatic hydrocarbons (PAHs) in 30 edible tissues of selected frequently-consumed fish and seafood collected from three coastal waters of Niger Delta, namely, Sime, Kporghor and Iko were investigated in 2014. Gas chromatographic analysis were employed for PAHs determination. Observed mean PAHs levels in the samples ranged from below detection limit (BD) of analytica...

The research on polycyclic aromatic hydrocarbons (PAHs) in karst soil mainly focuses 16 kinds of parent-PAHs (p- PAHs), and little attention is given to alkylated-PAHs (a-PAHs) with higher concentration greater toxicity. Five surface soils coal mining area their surrounding areas were sampled as subject investigated, the spatiotemporal pollution characteristics p-PAHs a-PAHs analyzed discuss im...

A low-pressure gas chromatography-ion trap mass spectrometry (LPGC-ITMS) method was investigated to shorten the analysis time for 18 US Environmental Protection Agency priority listed polycyclic aromatic hydrocarbons (PAHs). Their elution was optimised with a short, wide-bore column coupled to a deactivated capillary at the inlet end and with a long, conventional column to compare their analyti...

Applications of the key plant nutrient nitrogen (N) increase uptake and accumulation pollutants such as polycyclic aromatic hydrocarbons (PAHs). However, it is unclear how a plant’s preference for particular form N in soil affects PAHs. In this study, we investigated physiological mechanisms involved fluoranthene by rice ( Oryza sativa L.) wheat Triticum aestivum examined these were affected di...

An analytical method is described for the simultaneous quantitation of polycyclic aromatic hydrocarbons pAHs] and alkylderivatives [alkyl-PAHs] in "real world" samples using microbore reversed-phase high performance liquid chromatography in conjunction with two programmable fluorescence detectors. Sensitivity and selectivity were enhanced by analyzing PAHs under their optimum fluorescence wavel...