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Filtering by: Creator Hawaii Ocean Mixing Experiment Survey Program Remove constraint Creator: Hawaii Ocean Mixing Experiment Survey Program Advisor Ingle, James D., jr. Remove constraint Advisor: Ingle, James D., jr. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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Monitoring redox conditions with redox indicators during microbial reductive dechlorination in microcosms and bioaugmented columns

Creator:

Ruiz-Haas, Peter A.

Abstract:

New methods, sensors, and devices based on redox indicators were developed to monitor redox conditions in anoxic and anaerobic laboratory systems and the subsurface environment. The primary application was monitoring redox conditions during the dechlorination of tetrachioroethene (PCE) to ethene (ETH) in packed columns and microcosm bottles containing an enriched...

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Dissertation

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and for their eye-opening guidance in the teaching mentoring program. Last but not least, I would
A microcomputer automated anodic stripping voltammetric analyzer for trace heavy metal speciation

Creator:

Dewald, Lamar Robert

Abstract:

An automated instrument based on a single-board microcomputer was developed for use in voltammetric analyses. Operator input of numerous experiment parameters allows any type of voltammetric analysis to be implemented and multiple scans to be run unattended. A three operational amplifier potentiostat is used to control the cell voltage and...

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Dissertation

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microcomputer was developed for use in voltammetric analyses. Operator input of numerous experiment parameters
Microcomputer controlled chemical and radiochemical separations and analysis

Creator:

Bennett, Casey Wayne

Abstract:

An automated radiochemical flow analysis (ARFA) system was developed which integrates chemical and radiochemical techniques into one system through the use of a microcomputer. The operator, through the microcomputer, controls valves and pumps to transfer sample and reagent solutions to counting loops, ion exchange columns and holdup reservoirs. A Ge(Li)...

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Dissertation

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Program I 77 Overview 77 Functional Description 83 User Program II 69 Overview 89 Functional
The development and characterization of miniature spectrometers for measuring the redox status of environmental samples

Creator:

Cantrell, Kevin

Abstract:

A spectrometer, here denoted a Simple, Low-power, Inexpensive. Microcontroller-based or SLIM spectrometer. was developed that exploits the small size and low cost of solid-state electronic devices. This approach results in customizable spectrometers that are considerably less expensive and smaller than traditional instrumentation. The performance of the SLIM spectrometer was evaluated...

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Dissertation

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diagram of the steps in the MCU program .................................... 19 2-3. Schematic of the
Development of chemostats and use of redox indicators for studying redox transformations in biogeochemical matrices

Creator:

Lemmon, Teresa L.

Resource Type:

Dissertation

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the experiment discussed below is over). The program is interactive and responds to keystrokes
Development and evaluation of sampling techniques, instrumentation, and pyridine derivative reagents for fluorometric determination of chloroform and TCE in water with a portable fluorometer

Creator:

Prayoonpokarach, Sanchai

Abstract:

A novel, portable, filter fluorometer was developed for the determination of chloroform and TCE at environmentally-relevant levels when coupled with improved sampling techniques and reagents. Reagents selective for the TCE or chloroform convert these toxic species into fluorescent species that can be monitored. The fluorometer is based on LED excitation...

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Dissertation

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electronic parts; Kevin Cantrell for his program for acquiring data on a laptop computer. I am grateful to
Microcomputer-based fluorometric kinetic determination of ascorbic acid and flow injection analysis methods for interference correction and kinetic determinations based on the peak profile

Creator:

Chung, Hyung-Keun

Resource Type:

Dissertation

Full Text:

DETERMINATIONS 188 APPENDIX II. COMPUTER PROGRAM LISTINGS 194 LIST OF FIGURES Figure Page CHAPTER III III
Development of methodology and instrumentation for determination of chloroform in water

Creator:

Yang, Ying, 1969-

Resource Type:

Dissertation

Full Text:

pre-purge states. . . . 144 6.5 Logic timing diagram for the PLC program on the portable purge-and
Analytical chemiluminescence measurements and instrumentation

Creator:

Marino, Dean Frank

Resource Type:

Dissertation

Full Text:

analysis, the techniques of reagent mixing and sample introduction have provided sufficient difficulty to
Applications of redox indicators for evaluating redox conditions in environmental samples

Creator:

Jones, Brian Dion

Resource Type:

Dissertation

Full Text:

........................... 118 4.2.8 Arsenic speciation experiment .......................... 119 4.3 Results and Discussion

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Academic Affiliation

Chemistry11

Advisor

Ingle, James D., jr.[remove]11

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1981 to 2006

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Committee Member

Atre, Sundar1
Field, Jennifer1
Istok, Jack1
Remcho, Vincent1
Simonich, Staci1

Creator

Bennett, Casey Wayne1
Cantrell, Kevin1
Chung, Hyung Keun1
Dewald, Lamar Robert1
Jones, Brian Dion1
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Date

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Current results range from 1980 to 2006

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2000-20093
1990-19994
1980-19894

Degree Field

Chemistry11

Degree Level

Doctoral11

Degree Name

Doctor of Philosophy (Ph.D.)[remove]11

Language

English [eng]11

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School11

Peer Reviewed

No11

Resource Type

Dissertation11

Rights Statement

Copyright Not Evaluated10
In Copyright1

Subject

Chloroform -- Measurement -- Instruments2
Chloroform -- Measurement -- Methodology2
Environmental sampling -- Technological innovations2
Fluorimetry2
Oxidation-reduction reaction -- Measurement2
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