Volatile organic compounds analysis
Current challenges in volatile organic compounds analysis as potential biomarkers of cancer
... Abstract An early diagnosis and appropriate treatment are crucial in reducing mortality among people suffering from cancer. There is a lack of characteristic early clinical symptoms in most forms of cancer, which ...
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Optimizing the Analysis of Volatile Organic Compounds
... volatiles analysis by GC/MS has resulted in the creation of automated water and soil autosam- plers that reduce the amount of manual sample preparation ...GC/MS analysis, the second system is completing the ...
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Determination of Volatile Organic Compounds
... Figure 12 – Aldehydic signal in the H NMR spectrum of sample 5. 1 In conclusion, we have shown that fatty acids of the virgin olive oil from Basilicata are mainly due to the presence of saturated, monounsaturated, and ...
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Sources and concentrations of volatile organic compounds
... different compounds with different properties. According to the CMB analysis, the major sources for these VOCs in Helsinki were traffic and distant ...
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Analysis of Volatile Organic Compounds in Virgin Coconut Oil and their Sensory Attibutes
... Quantitative analysis of VOCs in commercial VCO The SPME-GCMS method response factor, K, of each compound was determined by spiking a known amount of the compound into the VCO matrix solution containing 2-octanol ...
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Instrumental and sensory analysis of volatile organic compounds in porcine adipose tissue
... (1990) Sexual odours in pork from entire males: Compounds responsible for boar taint and physiological basis of androstenone production and storage in young entir e male pigs.. Worksh[r] ...
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Comprehensive Mapping of Volatile Organic Compounds in Fruits
... of volatile organic compound present in ...of volatile compounds in ...data analysis strategies, statistical tools and some of novel multidimensional datasets of the grape ...the ...
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An investigation of volatile organic compounds in landfill gas
... Standard recommended practice, according to ASTM D3687-95('09) 'Standard Practice for Analysis of Organic Compound Vapors by the Activated Charcoal Tube Adsorption Method' and ASTM D61[r] ...
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Volatile organic compounds in 43 Chinese cities
... the analysis of the relative abundance of a selected hydrocarbon (or a selected fraction of hydro- carbons) can help highlight the different distributions of NMHCs in different areas of China ( Table 5 ...
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Boundaries in volatile organic compounds in human breath
... breath analysis is continued nearly two millennia later in 1784 when French chemist Lavoistier correctly identified that oxygen is a reactant consumed during ...recorded volatile organic ...
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Artificial Neural Network Analysis of Volatile Organic Compounds for the detection of lung cancer.
... of volatile organic compounds detected in the exhaled gases of patients seems ...of volatile organic compounds in the exhaled gases of 20 lung cancer pa- tients and 20 healthy ...
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The study of volatile organic compounds in urban and indoor air
... -NO ■N-NH- Figure 1-15 - Carbonyl/Hydrazone Derivatisation There are many publications that use the LC-UV determination for the analysis of carbonyl compounds in air. Kuwata et al.61, using an octadecyl ...
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Urinary volatile organic compounds for the detection of prostate cancer
... investigate volatile organic compounds (VOCs) emanating from urine samples to determine whether they can be used to classify samples into those from prostate cancer and non-cancer ...nant ...
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Methods in plant foliar volatile organic compounds research
... exchange analysis providing measurements of CO 2 , CH 4 , and N 2 O and fl ower VOC studies ( Matson, 1991 ; Matson and Harriss, 1995 ; Kallenbach et ...the compounds changes over ...
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Methods in Plant Foliar Volatile Organic Compounds Research
... of volatile organic compounds ...VOC compounds that makes them hard to detect directly, and their low ...gas analysis, usually based on gas chromatography and soft chemical ionization ...
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Ambiental volatile organic compounds in the megacity of São Paulo
... air organic compounds in the megacity of Sao Paulo, analysis of samples collected during the winter of 2003 downtown was carried ...carbonyls compounds were collected on August 4, 5 and ...
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Volatile organic compounds in cheese production chain (VOCHEESE)
... ABSTRACT Volatile organic compounds drive important quality traits in ...the volatile compound profile of cheese as detected by direct injection mass spectrometry of the headspace of model ...
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An Efficient Method Development for Extraction of Faecal Volatile Organic Compounds for GC-MS Analysis
... of analysis, in many cases the available analytical instrumentation does not have enough sensitivity for the analysis of biological ...hazardous organic solvents are time-consuming and ...the ...
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Mathematical Modeling for Volatile Organic Compounds Removal in a Biofilter: Model Validation and Sensitivity Analysis
... sensitivity analysis to determine their respective effects on the model ...sensitivity analysis of the model parameters showed that Henry's constant and specific area of biofilter had the strongest ...
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Recent Advances in Microextraction Methods for Sampling and Analysis of Volatile Organic Compounds in Air: A Review
... development [38]. NTD can be applied for both active and passive sampling and its capacity increases with the increase of sorbent quantity [37]. Its high capability for using as an active sampler can reduce the sampling ...
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