The present study was performed to assess the effect of the petrochemical sludge application rate on the mutagenic activity (Ames test) of soil and the persistence of mutagenic activity during laboratory soil bioremediation process. Sludge-soil systems were prepared at four different sludge application rates (1.25, 2.5, 5, and 10% w/w). Unamended soil was used as a control. Immediately followin...

............................................................................................................................... 5 Tiivistelmä (abstract in Finnish) .......................................................................................... 6 List of original publications ................................................................................................. 8 The author...

In this study we tested the use of seabird blood as a bioindicator of polycyclic aromatic hydrocarbon (PAH) pollution in the marine environment. Blood cells of breeding yellow-legged gulls (Larus michahellis) were able to track spatial and temporal changes consistent with the massive oil pollution pulse that resulted from the Prestige oil spill. Thus, in 2004, blood samples from yellow-legged g...

A detailed description of the polycyclic aromatic hydrocarbon (PAH)/unidentified infrared band (UIR) mechanism is presented in which experimental spectral bandshape functions are used to simulate IR emission spectra for individual molecules. These spectra are additively superimposed to produce a conglomerate spectrum representative of a family of PAH molecules. Ab initio vibrational frequencies...

On the basis of exact values of atomic localization energies and ortho-localization energies, the validity of the theory of A. Pullman and B. Pullman was investigated concerning the relation between the electronic structure and carcinogenic effect of aromatic hydrocarbons. The application of exact values of localization energies has led to almost the same results as obtained by the Pullmans. By...

The complete genome sequence of Rhodococcus sp. strain IcdP1 is presented here. This organism was shown to degrade a broad range of high-molecular-weight polycyclic aromatic hydrocarbons and organochlorine pesticides. The sequence data can be used to predict genes for xenobiotic biodegradation and metabolism.

As a result of the complex nature of operating multi-station national air quality networks it is rare that complete data sets are produced from these networks. The reliance of most air quality legislation on the assessment of measured annual average concentrations against target or limit concentrations necessitates the use of methods to calculate an annual average value and the uncertainty in t...

Concern over polycyclic aromatic hydrocarbons (PAHs) in foodstuffs was started during the 1960s and 1970s, where two classes of food toxicants producing tumours have been focused i.e. polycyclic aromatic hydrocarbons (PAHs) and N-nitroso compounds (Jägerstad and Skog, 2005). PAHs are referring to a series of organic compound containing two or more fused aromatic rings (Danyi et al., 2009; El-Ba...

Formation of adamantane hydrocarbons and their confinement in SAPO-34 caused the long induction period and the quick catalyst deactivation in methanol conversion. Via ship-in-a-bottle synthesis, adamantane and methyladamantanes could be produced from methanol conversion in the cage of 8-ring SAPO catalysts under very mild reaction conditions.

Edward Nixon Pakpahan1, Mohamed Hasnain Isa1*, Shamsul Rahman Mohamed Kutty1, Somporn Chantara2,3, Wan Wiriya3 and Ibrahima Faye4 1Civil Engineering Department, 4Fundamental & Applied Science Department, Universiti Teknologi, PETRONAS, 31750 Tronoh, Perak, Malaysia 2Environmental Chemistry Research Laboratory, Chemistry Department, 3Environmental Science Program and Centre for Environmental Hea...