[PDF] Top 20 A method for stable carbon isotope ratio and concentration measurements of ambient aromatic hydrocarbons

... While adsorptive sampling as described in this paper al- lows use of larger air sample volumes than whole air sam- pling, it has some other limitations. Each sample can only be analyzed once, which can be a problem in ... See full document

... in measurements underestimating atmospheric ...for concentration measurements. However, it is un- likely that isotope ratio measurements will be significantly biased by ... See full document

... of isotope ratios to substantiate the validity of ex- trapolation of smog chamber studies to atmospheric condi- tions (Irei et ...2011). Stable carbon isotopic compositions of SOA precursors have ... See full document

... Correlation of Particulate Phase PAHs: Major sources of PAH pollutants in the study are attributed to be biomass, wood and coal burning for domestic purpose. A co-relation was performed among selected PAHs to estimate ... See full document

... of stable isotope variation to investigate broad-scale perturbations and long-term changes in marine ecosystems that may be commonly reflected in the biological responses of top predators (Forcada et ... See full document

... anomalous measurements from the raw data eliminated approximately 1 % of the seawater sam- ple technical replicates, but reduced the mean and maximum SD of these sets of replicates by one and three orders of mag- ... See full document

... Carbon and oxygen stable isotope data are presented here as δ13C and δ18O in parts per... and other isotope analyses will be presented elsewhere..[r] ... See full document

... Fate of soil organic carbon and polycyclic aromatic hydrocarbons in a vineyard soil treated with biochar.. Rombolàa, Will Meredithb, Colin E.[r] ... See full document

... the isotope content of individual proteins and ...protein stable isotope fingerprinting (direct Protein-SIF) method to analyze natural ratios of carbon stable isotopes, which ... See full document

... SPE has been extensively used for the pre-concentration of PAHs in environmental waters (Crozier et al., 2001, Liang et al., 2006, Ma et al., 2010). In general, SPE is surface dependent processes since its ... See full document

... Magot et al. (2000) has reported that in crude oil reservoir, their exists various group of microorganisms along with water. For example, the formation water of the Tatarstan and western Siberia reservoirs existence of ... See full document

... used stable isotopes to investigate the feeding habits of 3 species of Myxinidae found in New Zealand waters (one species of the genus Neo - myxine and 2 species of Eptatretus) along a depth gradient of 50 to ~900 ... See full document

... mentioned processes. For example, the production of hydrogen ions (equation 2) will decrease pH while the bicarbonate ions produced in the same equation will increase alkalinity when the hydrogen ions are buffered by ... See full document

... sucrose), even though sucrose is the larger molecule, and thus could potentially be transferred from gut to blood less efficiently by means of passive paracellular transport in R. aegyptiacus (Tracy et al., 2007). The ... See full document

... stable carbon and oxygen isotope ratios of carbonate deposits became the most frequently.. 78.[r] ... See full document

... The increase in complexity from elements to chemical compounds, to organic molecules, and thence to life, is a beguilingly simple one. We know that nature completed the process a long time ago here on Earth, and we can ... See full document

... Comparison of stable carbon isotope composition of palmitic and stearic fatty acid from acidified methanol method 1; A and sequential solvent/ acidified methanol extraction method 2; B o[r] ... See full document

... Using stable isotopes to assess the trophic ecology of a native Using stable isotopes to assess the trophic ecology of a native and invasive fish species in the western basin of Lake Erie and invasive fish ... See full document

... underlying carbon and nitrogen dynamics: Collembola respond quickly to changes in the soil food web because of their high metabolism, they are closely associated to rhizodeposition and their different feeding ... See full document

... with 13 C-labeled hydrogen carbon were applied as described in Sect. 2.3. The growth curves during incubation of the three algal species are presented in Fig. 3 (panels a, b, c). The initial cell densities were ... See full document