Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer
Reexamination Certificate
2008-04-24
2011-12-13
Lauchman, Layla (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrophotometer
C356S326000, C422S078000, C422S062000, C436S133000, C436S150000
Reexamination Certificate
active
08077311
ABSTRACT:
Provided is a flow-through CO2 system for simultaneously measuring surface seawater pH, carbon dioxide fugacity (fCO2), and total dissolved inorganic carbon (DIC). All measurements are based on spectrophotometric determinations of solution pH at multiple wavelengths using sulfonephthalein indicators.
REFERENCES:
patent: 3887281 (1975-06-01), Kurita et al.
patent: 4277343 (1981-07-01), Paz
patent: 5132094 (1992-07-01), Godec et al.
patent: 5910448 (1999-06-01), Atwater et al.
patent: 5925572 (1999-07-01), Byrne et al.
patent: 5994146 (1999-11-01), Wright et al.
patent: 6285807 (2001-09-01), Walt et al.
patent: 6620091 (2003-09-01), Zavell et al.
patent: 6694157 (2004-02-01), Stone et al.
patent: 2008/0009055 (2008-01-01), Lewnard
Tapp M.; Hunter K.; Currie K.; MacKaskill B. “Apparatus for continuous-flow underway spectrophotometric measurement of surface water pH.” Marine Chemistry. vol. 72. No. 2. Dec. 2000. pp. 193-202.
Todd R. Martz, Jeffrey J. Carr, Craig R. French, and Michael D. DeGrandpre. “A Submersible Autonomous Sensor for Spectrophotometric pH Measurements of Natural Waters.” Anal. Chem. 75. 8. pp. 1844-1850, 2003.
M. D. Degrandpre, T. R. Hammar, S. P. Smith and F. L. Sayles. “In Situ Measurements of Seawater pCO2.” Limnology and Oceanography. vol. 40. No. 5. Jul. 1995. pp. 969-975.
Byrne R.H.; Liu X.; Kaltenbacher E.A.; Sell K. “Spectrophotometric measurement of total inorganic carbon in aqueous solutions using a liquid core waveguide.” Analytica Chimica Acta. vol. 451. No. 2. Jan. 25, 2002. pp. 221-229.
Kenneth M. Johnsona, Arne Kortzingerb, Ludger Mintropc, Jan C. Duinkerb and Douglas W. R. Wallace. “Coulometric total carbon dioxide analysis for marine studies: measurement and internal consistency of underway TCO2 concentrations.” Marine Chemistry. vol. 67. Issues 1-2. Oct. 1999. pp. 123-144.
Atsushi Watanabea, Hajime Kayannea, Ken Nozakic, Ken Katoc, Akira Negishic, Setsuko Kudob, Hideshi Kimotod, Masaya Tsudad and Andrew G. Dicksone. “A rapid, precise potentiometric determination of total alkalinity in seawater by a newly developed flow-through analyzer designed for coastal regions.” Marine Chemistry. vol. 85. Issues 1-2. Feb. 2004. pp. 75-87.
Richard A. Feely, Rik Wanninkhof, Hugh B. Milburn, Catherine E. Cosca, Mike Stapp and Paulette P. Murphy. “A new automated underway system for making high precision pCO2 measurements onboard research ships.” Analytica Chimica Acta. vol. 377. Issues 2-3. Dec. 31, 1998. pp. 185-191.
Taro Takashi, Stewart C. Sutherland, Colm Sweeney, Alain Poisson, Nicolas Metzl, Bronte Tilbrook, Nicolas Bates, Rik Wanninkhof, Richard A. Feely, Chrsitopher Sabine, Jon Olafsson and Yukihiro Nojiri. “Global sea-air CO2 flux based on climatological surface ocean pCO2, and seasonal biological and temperature effects.” Deep Sea Research Part II: Topical Studies in Oceanography. vol. 49. Issues 9-10. 2002. pp. 1601-1622.
Zhaohui Aleck Wang, Xuewu Liu, Robert H. Byrne, Rik Wanninkhof, Renate E. Bernstein, Eric A. Kaltenbacher and James Patten. “Simultaneous spectrophotometric flow-through measurements of pH, carbon dioxide fugacity, and total inorganic carbon in seawater.” Analytica Chimica Acta. vol. 596. Issue 1. Jul. 16, 2007. pp. 23-36.
Byrne Robert H.
Kaltenbacher Eric
Liu Xuewu
Lauchman Layla
Smith Ronald E.
Smith & Hopen , P.A.
University of South Florida
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