The present research investigation was aimed at monitoring the levels of polyaromatic hydrocarbons (PAHs) in the Korean ambient air, pine needle, and soil. Samples were collected from two large industrial zones of An-san city namely Sihwa and Banwal, both these industrial zones were further divided into major and minor zones in order to compare the levels of PAHs between the two industrial zone...

The environmental menace caused by hydrocarbon releasing activities on water bodies have remained a cause for great concern. Such are accompanied the release of highly toxic and carcinogenic polycyclic aromatic hydrocarbons (PAH), which easily biomagnified across food chain, ultimately aggravating adverse health conditions in human. This study was aimed at identifying most important contributor...

polycyclic aromatic hydrocarbons (pahs) in the priority controlling list of us epa weresystematically evaluated in surface sediments in dianchi lake and its estuaries. total pah concentrations(σpahs) varied from 210 to 11,070 ng/g dry weight (d.w.) in dianchi lake, and from 230 to 12,271 ng/g d.w.in the estuaries. σpahs in sediments from caohai section were higher than those from waihai section...

the bahía blanca estuary, located at the atlantic coast of argentina, includes a governmental nature reserve to protect biodiversity, lands and water; however, as the process of industrialization and urbanization is stepping rapidly at the neighbouring area, the potential increase in contaminant loads is a serious concern. after several contaminants surveys at the estuary, no single study has b...

Weathering of organic carbon contained in sedimentary rocks (petrogenic OC, OCpetro) is an important control on the concentrations dioxide (CO2) and oxygen atmosphere. Of particular significance are steep mountainous catchments, where high rates physical erosion introduce OCpetro to surface, air water can help drive oxidative weathering reactions, yet measurements CO2 emissions from oxidation s...

Microbiological analyses of sediments located near a point source for petrogenic chemicals resulted in the isolation of a pyrene-mineralizing bacterium. This isolate was identified as a Mycobacterium sp. on the basis of its cellular and colony morphology, gram-positive and strong acid-fast reactions, diagnostic biochemical tests, 66.6% G + C content of the DNA, and high-molecular-weight mycolic...

In order to compare and evaluate the atomization process occurring in several types of graphite furnaces for atomic absorption spectrometry, the authors estimated temporal variations in the gas temperature by using a two-line method under the assumption of a Bolzmann distribution. The atomization furnaces employed were a graphite tube, a graphite tube coated with pyrolitic carbon, a graphite tu...

The Yellow River is one of the largest suppliers sediments and organic carbon (OC) to ocean. Previous studies have revealed that OC transported by largely derives from erosion Chinese Loess Plateau, which dominated pre-aged soil could be efficiently preserved in marine sediments. Here, we used ramped oxidation radiocarbon analysis (RPO-14C) characterize age reactivity distribution two suspended...