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  • 1
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    Monterey Bay Aquarium Research Institute | Moss Landing, CA
    In:  http://aquaticcommons.org/id/eprint/1974 | 8 | 2015-04-29 21:12:20 | 1974
    Publication Date: 2021-07-11
    Description: The instrument described in this report is an updated version of the high precision, automated Winkler titration system described by Friederich et al.(1984). The original instrument was based on the work of Bryan et al. (1976) who developed a colorimetric endpointdetector and on the work of Williams and Jenkinson (1982) who produced an automated system that used this detector.The goals of our updated version of the device described by Friederich et al. (1984) were as follows:1) Move control of the system to the MS-DOS environment because HP-85 computers are no longer in production and because more user-friendly programs could be written using the IBM XT or AT computers that control the new device.2) Use more "off the shelf" components and reduce the parts count in the new system so that it could be easily constructed and maintained.This report describes how to construct and use the new automated Winkler titration device. It also includes information on the chemistry of the Winkler titration, and detailed instructions on how to prepare reagents, collect samples, standardize and perform the titrations (Appendix I: Codispoti, L.A. 1991 On the determination of dissolved oxygen in sea water, 15pp.). A disk containing the program needed to operate the new device is also included. (pdf contains 33 pages)
    Keywords: Chemistry ; Winkler titration ; dissolved oxygen
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 2
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    Monterey Bay Aquarium Research Institute | Moss Landing, CA
    In:  http://aquaticcommons.org/id/eprint/1972 | 8 | 2015-04-29 21:13:18 | 1972
    Publication Date: 2021-07-11
    Description: This report contains inorganic nutrient chemistry, sulfide and oxygen data collected during cruises 2 through 5 of the 1988 Black Sea Oceanographic Expedition aboard the R/V Knorr. Continuous nutrient and sulfide data were obtained in the upper 375 m using a pumped profiling system. Discrete samples were collected from rosette-CTD casts. The corresponding physical oceanographic data have been presented by White et al. (1989). Although all of the data reported has been edited at least twice, errors may remain. We encourage queries and plan to distribute updates on electronic media if there are any non-trivial changes.
    Keywords: Chemistry ; inorganic nutrient chemistry ; sulfide data ; oxygen data ; Black Sea ; Knorr/RV
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Monterey Bay Aquarium Research Institute | Moss Landing, CA
    In:  http://aquaticcommons.org/id/eprint/1971 | 8 | 2011-09-29 19:52:50 | 1971
    Publication Date: 2021-07-11
    Description: This report documents the methods used at the Monterey Bay Aquarium Research Institute (MBARI) for analyzing seawater nutrient samples with an Alpkem Series 300 Rapid Flow Analyzer (RFA) system. The methods have been optimized for the particular requirements of this laboratory.The RFA system has been used to analyze approximately 20,000 samples during the past two years. The methods have been optimized to run nutrient analyses in a routine manner with a detection limit of better than -±1% and a within run precision of -±1% of the full scale concentration range. The normal concentration ranges are 0-200 ~M silicate, 0-5 ~M phosphate, 0-50 ~M nitrate, 0-3 ~M nitrite, and 0-10 ~M ammonium.The memorandum is designed to be used in a loose-leaf binder format. Each page is dated and as revisions are made, they should be inserted into the binder. The revisions should be added into the binder. Retain the old versions in order to maintain a historical record of the procedures. (88 pages)
    Keywords: Chemistry ; seawater nutrient analysis ; Rapid Flow Analyzer
    Repository Name: AquaDocs
    Type: monograph
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