NDLI: Underwater mass spectrometers for in situ monitoring of dissolved gases and volatile organic compounds in deep ocean and coastal environments

Content Provider	IEEE Xplore Digital Library
Author	McMurtry, G.M. Jae Seong Lee Kolotyrkina, I.Y. Kee Hyun Kim
Copyright Year	2012
Description	Author affiliation: Korea Ocean Research and Development Institute, 787 Haean ro, Sangnok-gu, Ansan, Gyeonggi-do 426 744, Republic of Korea (Kolotyrkina, I.Y.) \|\| Chungnam National University, and Pacific Environmental Technologies-Asia, Daejeon 305-764, Republic of Korea (Kee Hyun Kim) \|\| SOEST, University of Hawaii, and Pacific Environmental Technologies-Hawaii, Honolulu, Hawaii, USA 96822 (McMurtry, G.M.; Jae Seong Lee)
Abstract	Pacific Environmental Technologies LLC (Pace Tech Hawaii), located in Honolulu, Hawaii, USA has developed a compact mass spectrometer-based instrument for multi-species determination of dissolved gases and volatile organic compounds which can function autonomously or semi-autonomously in water depths ranging to >4000 m. Mass spectrometers were chosen because of their potential for extremely high detection sensitivity (single ion counting is possible), isotopic resolution, and the wide dynamic range of their analytical response (allowing simultaneous detection from ppb to percent level). As such, they are extremely versatile instruments that can operate in true discovery mode for whatever the environment presents to the analyst. Besides the development of appropriate sample introduction procedures, the technical challenge is to successfully operate such instruments in situ and in very harsh environments, such as the bottom of the ocean. The present work builds upon our company's previous experience in developing the deep-ocean mass spectrometer (DOMS) prototype. The DOMS employed a commercial quadrupole mass spectrometer and can operate for long periods at water depths of >4000 m, but was relatively slow, large and heavy, with fairly high power consumption at up to 100 watts. It featured a company-patented but more primitive “built-in” membrane introduction mass spectrometry (MIMS) design that limited its sensitivity and capacity for future design improvements. Thus, we proposed the Mini-DOMS, a more compact, lower power and analytically improved version of the DOMS system.
Starting Page	1
Ending Page	6
File Size	1843351
Page Count	6
File Format	PDF
ISBN	9781457720895
e-ISBN	9781457720918
DOI	10.1109/OCEANS-Yeosu.2012.6263597
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-21
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gases Subspace constraints Heating Instruments Assembly Temperature sensors Standards ion trap mass spectrometry underwater gases volatiles deep-ocean coastal
Content Type	Text
Resource Type	Article

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