Underwater Mass Spectrometry: Developments and Calibration

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Simultaneous Detection of Multiple Analytes • Dissolved Gases – e.g. Nitrogen, Oxygen, Argon, Carbon Dioxide, Methane, Hydrogen Sulfide • Volatile Organic Compounds – e.g. Toluene, Benzene, Dimethyl Sulfide, Chloroform • Larger MW Compounds with Modification – e.g. PCBs, Pesticides, Drugs, Toxins
Principle Features of UMS Type Linear quadrupole mass filter <strong>Mass</strong> range 200 amu Inlet System Membrane introduction system Power consumption 100 Watts Voltage of operation 24 VDC or 110 VAC Deployment time Configuration dependent Dimensions ∅ 19 cm (7.5”) L 105 cm (41’’) Weight 33 kg (72.7 Lb) Depth >1000 m DSL tether range ~1600 m (1 mile)
Page 1 and 2: Underwater Membrane Mass Spectromet
Page 3 and 4: In Situ Underwater Membrane Introdu
Page 5: Membrane Introduction Mass Spectrom
Page 9 and 10: Membrane Assembly
Page 11 and 12: Laboratory Calibration - Pressure a
Page 13 and 14: Calibration Results - Pressure
Page 15 and 16: Field Baseline Determination • Ba
Page 17 and 18: Pre-Deployment Calibration
Page 19 and 20: Lake Maggiore Chemical Surveys O 2
Page 21 and 22: Hillsborough River, February 2007
Page 23 and 24: Hillsborough Deployment Method
Page 25 and 26: Oxygen 3 : 2 1 P M 4 : 1 9 P M 5 :
Page 27 and 28: Carbon Dioxide 204 mmole/kg 3:21 PM
Page 29 and 30: Depth Profiles in The Gulf of Mexic
Page 31 and 32: Depth Profile Data (Florida Shelf)
Page 33 and 34: Depth Profile Data (Miss. Coast) Ar
Page 35 and 36: Benthic Boundary Layer (Georgia Coa
Page 37 and 38: Benthic Boundary Layer (Georgia Coa
Page 39 and 40: Future Plans for Underwater MS •
Page 41 and 42: Ahoy there landlubbers -- it's time
Page 43: Argon Time Series 16 14 Conc. (mmol

Underwater Mass Spectrometry: Developments and Calibration

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