effluent gas containing volatile organic compounds from a station ary source at a flow rate of 1 L/min, using a glass-lined probe heated to 130 ± 5EC and a sampling method for volatile organic compounds (SMVOC) train. 2.2 The
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2018年5月8日 · DMS, a highly-volatile organosulfur compound was quite abundant in the headspace of F. petiolata (22.2%; Table 1 ) and in general serves to the algae as a chemoattractant [ 25 , 26 ]. Since DMS distribution in the water column does not correlate well with phytoplankton biomass [ 39 ], it led to suggestions that only certain groups of marine algae
2018年5月7日 · The linear range for a selected 100 μm PDMS fibre and the applied GC/MS technique was from 0.05 to 100 μg L -1, method detection limit varied depending on the analysed substance from 0.05 to 0.7
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2015年9月1日 · A headspace technique is widely used to identify volatile organic compounds (VOCs) emission from samples having complex analytical matrix, especially containing non-volatile chemical species. In the case of presence of analytes at concentration level allowing direct determination by gas chromatography (GC), without the need of additional enrichment
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1999年6月25日 · A multipurpose sampler (Gerstel MPS), designed for liquid large volume, gaseous and headspace samples was used for the GC-MS analysis of organic volatiles in human urine. Headspace sampling with a volume-, temperature- and speed-controlled gas-tight syringe was combined with a temperature-controlled
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2022年12月27日 · Volatile organic compounds (VOCs) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. VOCs are emitted by a wide array of products numbering
2016年11月15日 · Development and optimization of headspace (HS) and headspace-solid phase microextraction (HS-SPME) for the determination of volatile fuel compounds in environmental samples November 2016 DOI: 10.
2018年7月20日 · For experiments on headspace heating, a fixed temperature was chosen (90 C), and the duration of headspace analysis was varied. Analysis times of 10, 20, 30, 40, 50, 60,70, 80, 90, and 100 min were used for optimization. All
2018年3月20日 · Introduction Volatile organic compounds (VOCs) can act as long distance signaling molecules between microbes and other organisms and have been shown to impact attraction of biting insects to mammals (Mboera et al., 1997), recruitment of herbivores, and pollinating insects to plants (Pichersky and Gershenzon, 2002), and growth of rival microbes in
We can analyse for Volatile Solids content in various samples, including biomass. +353 61 371 725 info@celignis.com Toggle navigation Home About About Celignis Our Personnel Research Projects Uses of Biomass