Electron Affinity Spectroscopy—A New Method for the Identification of Functional Groups in Chemical Compounds Separated by Gas Chromatography1

Lovelock, J. E.; Lipsky, S. R.

doi:10.1021/ja01487a045

Cited by 287 publications

(70 citation statements)

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“…Halocarbons in the atmosphere were first observed by Lovelock (1971) using a gas chromatograph (GC), after his invention of the electron capture detector (ECD - Lovelock and Lipsky, 1960; see also Morris and Ettre, 2007). His initial atmospheric use for his GC-ECD was to measure CFC-11 and CFC-12, but it was soon also used to measure CH 3 I and CCl 4 in air and water (Lovelock et al, 1973).…”

Section: Introductionmentioning

confidence: 99%

μDirac: an autonomous instrument for halocarbon measurements

et al. 2010

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Abstract. We describe a new instrument (µDirac) capable of measuring halocarbons in the atmosphere. Portability, power efficiency and autonomy were critical design requirements and the resulting instrument can be readily deployed unattended on a range of platforms: long duration balloon, aircraft, ship and ground-based stations. The instrument is a temperature programmed gas chromatograph with electron capture detector (GC-ECD). The design requirements led to µDirac being built in-house with several novel features. It currently measures a range of halocarbons (including short-lived tracers having biogenic and anthropogenic sources) with measurement precision relative standard deviations ranging from ± 1% (CCl 4 ) to ± 9% (CH 3 I). The prototype instrument was first tested in 2005 and the instrument has been proved in the field on technically challenging aircraft and ground-based campaigns. Results from an aircraft and a ground-based deployment are described.

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Section: Introductionmentioning

confidence: 99%

μDirac: an autonomous instrument for halocarbon measurements

et al. 2010

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“…He became a pioneer in the application of these new and evolving analytical tools to the analysis of biological compounds, publishing extensively on all aspects of chromatography. In 1960, he was credited with the development of the electron capture detector in his collaboration with Lovelock [13]. He also had an interest in mass spectrometry and his 1965 mass spectrometry lab was the forerunner of the Keck Mass Spectrometry Lab in the Yale Medical School formed in 1993.…”

Section: A Second Serendipitous Meetingmentioning

confidence: 99%

John Bennett Fenn: A Curious Road to the Prize

Grayson

2011

J. Am. Soc. Mass Spectrom.

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John Bennett Fenn shared the 2002 Nobel Prize in Chemistry for his development of electrospray ionization (ESI). There are several excellent, in-depth biographical reviews of Fenn's scientific career Fenn (Angew. Chem., Int. Ed. 42, 3871-3894, 2003) and Fenn (Annu. Rev. Phys. Chem. 47, 1-41, 1996). The focus of this report is to trace the random walk nature of Fenn's career path and to highlight those critical events along that path that led him to the important work for which he was recognized, the development of ESI as a means of ionizing large molecules and interfacing the liquid chromatograph to the mass spectrometer. In addition, this report should hopefully convey something of the curious, generous, kind, and outgoing nature of the man.

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“…Electron capture detectors (ECD) have become the most important gas chromatography (GC) detectors for the detection of electron affine compounds since their advent more than 55 years ago [1]. Although many attempts have been made to replace the radioactive source used to generate thermalized electrons by ionizing the carrier gas [2], only the pulsed helium discharge has seen some degree of application.…”

Section: Introductionmentioning

confidence: 99%

Electron Capture Detector with Non-Radioactive Electron Source

Bunert

Kirk

Oermann

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Gas chromatographs equipped with electron capture detectors (ECD) are widely used for the analysis of electron affine substances. Achieving limits of detection in the low pptv-range, electron capture detectors are the most sensitive detectors available for such compounds. Based on their operating principle, they require free electrons at atmospheric pressure, which are usually generated by using a β --decay. However, the use of radioactive materials leads to regulatory restrictions regarding purchase, operation and disposal. Here, we present a new electron capture detector using a non-radioactive electron source, which is not subject to these limitations and offers further advantages such as adjustable and higher electron densities and energies.

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Electron Affinity Spectroscopy—A New Method for the Identification of Functional Groups in Chemical Compounds Separated by Gas Chromatography¹

Cited by 287 publications

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<i>μ</i>Dirac: an autonomous instrument for halocarbon measurements

<i>μ</i>Dirac: an autonomous instrument for halocarbon measurements

John Bennett Fenn: A Curious Road to the Prize

Electron Capture Detector with Non-Radioactive Electron Source

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Electron Affinity Spectroscopy—A New Method for the Identification of Functional Groups in Chemical Compounds Separated by Gas Chromatography1

Cited by 287 publications

References 0 publications

&lt;i&gt;μ&lt;/i&gt;Dirac: an autonomous instrument for halocarbon measurements

&lt;i&gt;μ&lt;/i&gt;Dirac: an autonomous instrument for halocarbon measurements

John Bennett Fenn: A Curious Road to the Prize

Electron Capture Detector with Non-Radioactive Electron Source

Contact Info

Product

Resources

About

Electron Affinity Spectroscopy—A New Method for the Identification of Functional Groups in Chemical Compounds Separated by Gas Chromatography¹

<i>μ</i>Dirac: an autonomous instrument for halocarbon measurements

<i>μ</i>Dirac: an autonomous instrument for halocarbon measurements