Serial samples of breath ethane can also be analyzed by gas-chromatography
نویسندگان
چکیده
منابع مشابه
Analysis of human breath samples using a modi ed thermal desorption: gas chromatography electrospray ionization interface
A two-stage thermal desorption/secondary electrospray ionisation/time-of-flight mass spectrometry for faster targeted breath profiling has been studied. A new secondary electrospray ionisation (SESI) source was devised to constrain the thermal desorption plume and promote efficient mixing in the ionization region. Further a chromatographic pre-separation stage was introduced to suppress interfe...
متن کاملAnalysis of human breath samples using a modified thermal desorption: gas chromatography electrospray ionization interface.
A two-stage thermal desorption/secondary electrospray ionization/time-of-flight mass spectrometry for faster targeted breath profiling has been studied. A new secondary electrospray ionization (SESI) source was devised to constrain the thermal desorption plume and promote efficient mixing in the ionization region. Further, a chromatographic pre-separation stage was introduced to suppress interf...
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High molecular weight compounds dissolved in gases at elevated pressures and temperatures in reservoirs often present production problems. These can range ftom precipitation of solids which foul chillers and tubing to plasticizing membranes used for gas component separations. Quantitative analysis of such samples is problematic because they are frequently present in sample vessels as two phases...
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I n December 1999 CrossTalk [3], David Cook provided a well-reasoned historical analysis of programming language development and considered the role languages play in the software development process. The article was valuable because it showed that programming language developments are not sufficient to ensure success; however, it would be dangerous to conclude from this that they are not neces...
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In this paper the Recursive Path Ordering is adapted for proving termination of rewriting incrementally. The new ordering, called Recursive Path Ordering with Modules, has as ingredients not only a precedence but also an underlying ordering =B. It can be used for incremental (innermost) termination proofs of hierarchical unions by defining =B as an extension of the termination proof obtained fo...
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ژورنال
عنوان ژورنال: Respiratory Medicine
سال: 2007
ISSN: 0954-6111
DOI: 10.1016/j.rmed.2006.11.021