نتایج جستجو برای: highly reactive vocs
تعداد نتایج: 638601 فیلتر نتایج به سال:
To understand the ultimately lowest detection range of volatile organic compounds (VOCs) in air, application of a high sensitivity analytical system was investigated by coupling thermal desorption (TD) technique with gas chromatography (GC) and time-of-flight (TOF) mass spectrometry (MS). The performance of the TD-GC/TOF MS system was evaluated using liquid standards of 19 target VOCs prepared ...
US/German Workshop Riverside 1999 L. Ruppert 1 Influence of Biogenic VOCs on Photooxidant Formation: Simulation Experiments in EUPHORE and Comparison with Model Calculations L. Ruppert Fraunhofer Institut Atmosphärische Umweltforschung, IFU Kreuzeckbahnstr. 19, D-82467 Garmisch-Partenkirchen, e-mail: [email protected] Introduction The possible contribution of biogenic VOCs to tropospheric ozon...
The reactive intermediate generated by the addition of tert-butyl and 1,1,3,3-tetramethyl butyl isocyanide and cyclohexyl isocyanide to dialkyl acetylenedicarboxylate was trapped by 3-hydroxy pyridine to produce highly functionalized 4H-chromenes in fairly good yields
The reactive intermediate generated by the addition of tert-butyl and 1,1,3,3-tetramethyl butyl isocyanide and cyclohexyl isocyanide to dialkyl acetylenedicarboxylate was trapped by 3-hydroxy pyridine to produce highly functionalized 4H-chromenes in fairly good yields.
A method for analysis of volatile organic compounds (VOCs) from microbial cultures was established using proton transfer reaction-mass spectrometry (PTR-MS). A newly developed sampling system was coupled to a PTR-MS instrument to allow on-line monitoring of VOCs in the dynamic headspaces of microbial cultures. The novel PTR-MS method was evaluated for four reference organisms: Escherichia coli,...
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