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Filtering by: Creator Cross, Tim Remove constraint Creator: Cross, Tim Advisor Ingle, James D., jr. Remove constraint Advisor: Ingle, James D., jr.

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Development of trace enrichment techniques for trace metals in natural waters using high pressure liquid chromatography

Creator:

Ambrose, Arthur Sigurd

Abstract:

An on-line trace enrichment (TE) system, based on high pressure liquid chromatogroaphy (HPLC) and flame atomic absorption (AA), has been developed for trace metal analysis. The sample is pumped through a column filled with a cation exchange resin which traps metal ions. The ions are subsequently stripped from the column...

Resource Type:

Dissertation
Studies of ammonia gas transport and fluorimetric detection in an aqueous solution

Creator:

Clark, Eric J.

Resource Type:

Masters Thesis

Full Text:

hydrophobic membrane partitions the aqueous solutions and allows ammonia gas to readily cross the membrane
Applications of redox indicators for evaluating redox conditions in environmental samples

Creator:

Jones, Brian Dion

Resource Type:

Dissertation

Full Text:

integrity .......................................... 39 3.2 Assembly of cross-flow filter (a) and
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...

Resource Type:

Dissertation
Partial chemical speciation techniques for aquatic humic-metal complexes

Creator:

Chase, Duane Scott

Resource Type:

Masters Thesis

Full Text:

of the Sephadex gels (hydrated cross linked dextran) but Enzacryl gels (cross linked polyacryloyl
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)...

Resource Type:

Dissertation
Development of chemostats and use of redox indicators for studying redox transformations in biogeochemical matrices

Creator:

Lemmon, Teresa L.

Resource Type:

Dissertation

Full Text:

holder: (a) inlet side; (b) outlet side. 213 A.7 Assembly of cross-flow filter: (A) filter holer inlet
A critical comparison of methods for the determination of phytoplankton chlorophyll

Creator:

Salinas, John T.

Abstract:

The concentration of chlorophyll in natural bodies of water is commonly determined as a means to rapidly estimate the phytoplankton biomass. The literature gives numerous warnings, however, as to the problems involved with accurately determining chlorophyll concentrations. The author's work at Crater Lake, Oregon enticed him to explore critically the...

Resource Type:

Masters Thesis
Development of methodology and instrumentation for determination of chloroform in water

Creator:

Yang, Ying, 1969-

Resource Type:

Dissertation
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...

Resource Type:

Dissertation

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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 1980 to 2006

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Committee Member

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

Creator

Ambrose, Arthur Sigurd1
Bennett, Casey Wayne1
Chase, Duane Scott1
Clark, Eric J.1
Jones, Brian Dion1
more Creators »

Date

Date range begin – Date range end

Current results range from 1979 to 2006

View distribution

Decade

2000-20092
1990-19994
1980-19894
1970-19791

Degree Field

Chemistry11

Degree Level

Doctoral8
Master's3

Degree Name

Doctor of Philosophy (Ph.D.)8
Master of Science (M.S.)3

Language

English [eng]11

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School11

Peer Reviewed

No11

Resource Type

Dissertation8
Masters Thesis3

Rights Statement

Copyright Not Evaluated10
In Copyright1

Subject

Chloroform -- Measurement -- Instruments2
Chloroform -- Measurement -- Methodology2
Fluorimetry2
Ammonia -- Sampling1
Anaerobic bacteria1
more Subjects »

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