http://lod.bco-dmo.org/id/dataset/966895
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2025-07-03
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Biological degradation rate constants for acetaldehyde and ethanol (and associated water quality parameters) in surface waters of the Upper Newport Back Bay estuary in California from May 2021 to July 2022
2025-07-03
publication
2025-07-03
revision
BCO-DMO Linked Data URI
2025-07-03
creation
http://lod.bco-dmo.org/id/dataset/966895
Catherine Clark
Western Washington University
principalInvestigator
Warren de Bruyn
Chapman University
principalInvestigator
Jefferson Crosland
Western Washington University
principalInvestigator
Robin Kodner
Western Washington University
principalInvestigator
Maya Matsumoto
Western Washington University
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: de Bruyn, W., Kodner, R., Matsumoto, M., Crosland, J., Clark, C. (2025) Biological degradation rate constants for acetaldehyde and ethanol (and associated water quality parameters) in surface waters of the Upper Newport Back Bay estuary in California from May 2021 to July 2022. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-07-03 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/966895 [access date]
Acetaldehyde and ethanol biological degradation rate constants in estuarine waters Dataset Description: Methods and Sampling: <p>The Newport Back Bay (NBB) is an estuary in Orange County, Southern California, USA. It includes the Upper Newport Back Bay, a ~1000-acre ecological preserve managed by the U.S. Fish and Wildlife Service and the California Department of Fish and Game. This estuary includes salt marshes and mudflats. The primary freshwater input is the San Diego creek which drains a ~150 square mile watershed, with &nbsp;additional freshwater inputs from some storm-water drains.&nbsp; Water samples were collected from 3 sites: Site 1 (inlet; 33.650327, -117.8671967); site 2 (mid-estuary; 33.6302266, -117.8859726); site 3 (near the outlet into the Pacific Ocean; 33.6181867, -117.9051099). When freshwater inflow is significant, site 1 has lower salinity water with higher dissolved organic content.</p>
<p>Surface water (&lt;5 cm) was sampled in the morning from the shore, stored in amber glass bottles and transported to the laboratory.&nbsp;&nbsp;Water quality measurements were made in-situ (Hanna Instruments HI 9829 multiparameter probe with a double junction pH/oxidation reduction potential (ORP) sensor (HI7609829-1), galvanic dissolved oxygen (DO) sensor (HI7609829-2), conductivity/turbidity sensor (HI7609829-4) and a temperature sensor.&nbsp;</p>
<p>Absorbance was measured to assess the dissolved organic content of the sample and allow for calculations of estimated photochemical production rates of ethanol and acetaldehyde. Samples were first filtered through 0.2 micron Durapore filters to remove microorganisms. Spectra were obtained in a 1 cm quartz cell using a Horiba Aqualog spectrofluorometer.&nbsp; Excitation-emission matrices (EEMs) were also collected (excitation 250-450 nm; emission 250 to 830 nm).&nbsp; Nanopure water was used as the blank. &nbsp;Raw absorbance data were used to calculate absorption coefficients (Juetten et al., 2025).&nbsp;</p>
<p>Aerobic bacterial counts were measured by adding 1 mL of a 1:100 mL mixture of seawater and artificial seawater to Petrifilm Aerobic Count Plates (3M Corporation), incubating at 37<sup>o</sup>C for 48 hours and then counting the number of colony-forming units on the plates. This provides a measurement of culturable colonies and would be expected to underestimate the true aerobic microbial population. For total bacteria counts, 20 mL was filtered through black 0.2 µm polycarbonate filters (Whatman Cyclopore), fixed with glutaraldehyde (2% in 0.1 M phosphate buffer; pH 7.4; Poly Scientific) and stored in aluminum foil packets at 4<sup>o</sup>C. These filters were shipped on dry ice to Western Washington University where they were placed on microscope slides, DAPI stained and particles counted using a fluorescence microscope.&nbsp;</p>
<p>Filtered samples were acidified to pH &lt;2 using 6 M hydrochloric acid before measuring DOC concentrations with a Shimadzu TOC analyzer.</p>
<p>Chlorophyll <em>a</em> levels were determined with EPA method 445.0. Briefly, 200 mL were buffered saturated magnesium carbonate solution, filtered through GF/F filters (Cytiva), sealed in aluminum foil packets and stored at -80<sup>o</sup>C in the dark. Samples were shipped on dry ice to Western Washington University’s Institute for Watershed Studies laboratory where the GF/F filters were ground and chlorophyll extracted with acetone before determining chlorophyll levels by measuring &nbsp;fluorescence before and after acidification with 0.1 N HCl using a Turner Designs TD700 or 10 AU. &nbsp;</p>
<p>The measurement of acetaldehyde and ethanol uptake rates has been described in detail in de Bruyn et al. (2021). Briefly, samples were split into two aliquots; one aliquot was filtered through 0.2 µm filters (Millipore) to remove abiotic particles and microorganisms to serve as abiotic controls for biological uptake.&nbsp; About 150 mL from the other unfiltered aliquot was placed in a glass syringe, spiked with deuterated acetaldehyde or ethanol (d-4; Aldrich 98% deuterated; 40-100 nM)) and used to measure acetaldehyde or ethanol &nbsp;biological degradation rates.&nbsp; Syringes were kept in the dark in a water bath set to the temperature of the water when sampled. Degradation rates were determined from changes in deuterated acetaldehyde or ethanol concentrations over 4 to 5-hours.&nbsp; Every ~45 minutes, samples were removed from the syringe and deuterated acetaldehyde or ethanol measured by purge and trap gas chromatography mass spectrometry (Shimadzu GC-14A/HP5973MSD).&nbsp; Details of this measurement are given in de Bruyn et al. (22021). In brief, deuterated acetaldehyde or ethanol is sparged using ultrapure He, trapped in a glass bead trap at liquid nitrogen temperatures, thermally desorbed, and analyzed on a Poroplot Q column (Shimadzu, 14A) with MS detection (Agilent 5973).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2022112 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2022112
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2022184 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2022184
onGoing
Catherine Clark
Western Washington University
3606506400
Department of Chemistry 516 High Street
Bellingham
WA
982259038
US
clarkc36@wwu.edu
pointOfContact
Warren de Bruyn
Chapman University
7146287353
450 N. Center St., Office 237
Orange
CA
928661005
US
debruyn@chapman.edu
pointOfContact
Jefferson Crosland
Western Washington University
croslaj@wwu.edu
pointOfContact
Robin Kodner
Western Washington University
kodner@wwu.edu
pointOfContact
Maya Matsumoto
Western Washington University
mgiss112@gmail.com
pointOfContact
asNeeded
Dataset Version: 1
Unknown
date
site
Latitude
Longitude
PH
Temp
Salinity
ORP
abs_300
abs_350
abscoefficient300
abscoefficient350
Aerobic_counts
Total_bacteria
DOC
Chloro
K1_ethanol
K2 _acetaldhyde
K2_acetaldhyde_meas directly
Shimadzu TOC analyzer
GC/MS; Shimadzu GC-14A/HP5973MSD
Hanna Instruments HI 9829
Horiba Aqualog
theme
None, User defined
date
site
latitude
longitude
pH
temperature of sample or a generic measurement (not in-situ water temp)
salinity
Oxidation_Reduction_Potential
absorbance
bacterial abundance
dissolved organic Carbon
pigment concentration
rate_measurements
featureType
BCO-DMO Standard Parameters
Elemental Analyzer
Gas Chromatograph Mass Spectrometer
Multi Parameter Portable Meter
Spectrometer
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
RUI: Collaborative Research: Cycling of ethanol and acetaldyhyde in coastal waters
https://osprey.bco-dmo.org/project/844826
RUI: Collaborative Research: Cycling of ethanol and acetaldyhyde in coastal waters
<p>NSF Award Abstract</p>
<p>Ethanol is added to gasoline to increase octane levels and lower the concentrations of carbon monoxide and surface ozone in the atmosphere. As a renewable fuel, ethanol may also help decrease our dependence on gasoline. Increased use of ethanol in the United States and globally as a fossil fuel substitute and additive is expected to increase ethanol levels in the atmosphere. Atmospheric ethanol is converted to acetaldehyde which is a hazardous pollutant. To understand the impact of increasing ethanol usage, it is important to understand the cycling of ethanol and acetaldehyde in the environment--how they are produced, consumed, and interconverted. Because these compounds can cross from air into water, this requires understanding what happens to these compounds in both the atmosphere and in seawater and other surface waters. This proposal focuses on improving our understanding of processes that produce and consume ethanol and acetaldehyde in coastal seawater and other coastal surface waters like estuaries and salt marshes. This project will measure the rates of photochemical production of ethanol and acetaldehyde, as well as their chemical and biological degradation rates. The project will also measure the rate and efficiency of the biological production of acetaldehyde from ethanol by microbial organisms in these waters. The scientists have an excellent track record of involving undergraduate students, including underrepresented minorities, in their research and as co-authors on publications, a trend they plan to continue with this project. These students would be trained in analytical chemistry and environmental research and would present their research findings at local and national conferences. Lastly, the PIs also plan outreach activities with high school STEM programs to improve student diversity in environmental research.</p>
<p>The primary sink for ethanol in the troposphere is reaction with OH to produce acetaldehyde. Acetaldehyde levels in the troposphere are also expected to increase with increased use of ethanol. Changes in the atmospheric concentrations of these species are expected to have a significant impact on the oxidative capacity of the troposphere. To understand future impacts, it is important to understand current tropospheric budgets which have significant uncertainties for both species. One of the largest sources of uncertainty is the role of the oceans and surface waters in cycling these species into and out of the troposphere. The current understanding is limited by the very small database of ambient concentration measurements in both air and water and an incomplete insight into the processes that control concentrations in seawater and surface waters; these processes represent a complex interplay between biological and photochemical sources and sinks, and air-water exchange. To improve the current understanding of the cycling of ethanol and acetaldehyde in coastal seawater and surface waters, this project will measure: 1) chemical and biological degradation rates of ethanol and acetaldehyde in coastal waters; 2) the rate and efficiency of the biological production of acetaldehyde from ethanol by microbial organisms; 3) ethanol and acetaldehyde concentrations in air and surface waters; 4) the ethanol and acetaldehyde source strength of estuary and saltmarsh sediments; and 5) ethanol and acetaldehyde photochemical production rates in surface waters.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Coastal Water Cycling
largerWorkCitation
project
eng; USA
oceans
-117.9051099
-117.8671967
33.6181867
33.650327
2021-05-20
2022-10-04
Upper Newport Back Bay estuary in Orange County, Southern California
0
BCO-DMO catalogue of parameters from Biological degradation rate constants for acetaldehyde and ethanol (and associated water quality parameters) in surface waters of the Upper Newport Back Bay estuary in California from May 2021 to July 2022
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/966987.rdf
Name: date
Units: unitless
Description: <p>date sample taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/966988.rdf
Name: site
Units: unitless
Description: <p>location sample was taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/967004.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Sampling latitude, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/967006.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Sampling longitude, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/966989.rdf
Name: PH
Units: unitless
Description: <p>in situ pH of surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/966990.rdf
Name: Temp
Units: degrees Celsius (°c)
Description: <p>temperature of in situ surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/966991.rdf
Name: Salinity
Units: practical salinity units (PSU)
Description: <p>salinity of in situ surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/966992.rdf
Name: ORP
Units: millivolts (mV)
Description: <p>oxidation-reduction potential of in situ surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/966993.rdf
Name: abs_300
Units: unitless
Description: <p>absorbance at 300 nm</p>
http://lod.bco-dmo.org/id/dataset-parameter/966994.rdf
Name: abs_350
Units: unitless
Description: <p>absorbance at 350 nm</p>
http://lod.bco-dmo.org/id/dataset-parameter/966995.rdf
Name: abscoefficient300
Units: inverse meters (m-1)
Description: <p>absorption coefficient at 300 nm</p>
http://lod.bco-dmo.org/id/dataset-parameter/966996.rdf
Name: abscoefficient350
Units: inverse meters (m-1)
Description: <p>absorption coefficient at 350 nm</p>
http://lod.bco-dmo.org/id/dataset-parameter/966997.rdf
Name: Aerobic_counts
Units: number per milliliter (mL-1)
Description: <p>total number of bacteria that were culturable in aerobic conditions</p>
http://lod.bco-dmo.org/id/dataset-parameter/966998.rdf
Name: Total_bacteria
Units: number per milliliter (mL-1)
Description: <p>total number of bacteria observed under a microscope</p>
http://lod.bco-dmo.org/id/dataset-parameter/966999.rdf
Name: DOC
Units: milligrams per liter (mg L-1)
Description: <p>dissolved organic carbon concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/967000.rdf
Name: Chloro
Units: micrograms per liter (microg/L)
Description: <p>concentration of chlorophyll pigments</p>
http://lod.bco-dmo.org/id/dataset-parameter/967001.rdf
Name: K1_ethanol
Units: inverse minutes (min-1)
Description: <p>rate constant for biological degradation of ethanol</p>
http://lod.bco-dmo.org/id/dataset-parameter/967002.rdf
Name: K2 _acetaldhyde
Units: inverse minutes (min-1)
Description: <p>rate constant for biological degradation of acetaldehyde modelled from the rate constant for biological degradation of ethanol</p>
http://lod.bco-dmo.org/id/dataset-parameter/967003.rdf
Name: K2_acetaldhyde_meas directly
Units: inverse minutes (min-1)
Description: <p>rate constant for biological degradation of acetaldehyde mesaured directly</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://osprey.bco-dmo.org/dataset/966895/data/download
download
onLine
dataset
<p>The Newport Back Bay (NBB) is an estuary in Orange County, Southern California, USA. It includes the Upper Newport Back Bay, a ~1000-acre ecological preserve managed by the U.S. Fish and Wildlife Service and the California Department of Fish and Game. This estuary includes salt marshes and mudflats. The primary freshwater input is the San Diego creek which drains a ~150 square mile watershed, with &nbsp;additional freshwater inputs from some storm-water drains.&nbsp; Water samples were collected from 3 sites: Site 1 (inlet; 33.650327, -117.8671967); site 2 (mid-estuary; 33.6302266, -117.8859726); site 3 (near the outlet into the Pacific Ocean; 33.6181867, -117.9051099). When freshwater inflow is significant, site 1 has lower salinity water with higher dissolved organic content.</p>
<p>Surface water (&lt;5 cm) was sampled in the morning from the shore, stored in amber glass bottles and transported to the laboratory.&nbsp;&nbsp;Water quality measurements were made in-situ (Hanna Instruments HI 9829 multiparameter probe with a double junction pH/oxidation reduction potential (ORP) sensor (HI7609829-1), galvanic dissolved oxygen (DO) sensor (HI7609829-2), conductivity/turbidity sensor (HI7609829-4) and a temperature sensor.&nbsp;</p>
<p>Absorbance was measured to assess the dissolved organic content of the sample and allow for calculations of estimated photochemical production rates of ethanol and acetaldehyde. Samples were first filtered through 0.2 micron Durapore filters to remove microorganisms. Spectra were obtained in a 1 cm quartz cell using a Horiba Aqualog spectrofluorometer.&nbsp; Excitation-emission matrices (EEMs) were also collected (excitation 250-450 nm; emission 250 to 830 nm).&nbsp; Nanopure water was used as the blank. &nbsp;Raw absorbance data were used to calculate absorption coefficients (Juetten et al., 2025).&nbsp;</p>
<p>Aerobic bacterial counts were measured by adding 1 mL of a 1:100 mL mixture of seawater and artificial seawater to Petrifilm Aerobic Count Plates (3M Corporation), incubating at 37<sup>o</sup>C for 48 hours and then counting the number of colony-forming units on the plates. This provides a measurement of culturable colonies and would be expected to underestimate the true aerobic microbial population. For total bacteria counts, 20 mL was filtered through black 0.2 µm polycarbonate filters (Whatman Cyclopore), fixed with glutaraldehyde (2% in 0.1 M phosphate buffer; pH 7.4; Poly Scientific) and stored in aluminum foil packets at 4<sup>o</sup>C. These filters were shipped on dry ice to Western Washington University where they were placed on microscope slides, DAPI stained and particles counted using a fluorescence microscope.&nbsp;</p>
<p>Filtered samples were acidified to pH &lt;2 using 6 M hydrochloric acid before measuring DOC concentrations with a Shimadzu TOC analyzer.</p>
<p>Chlorophyll <em>a</em> levels were determined with EPA method 445.0. Briefly, 200 mL were buffered saturated magnesium carbonate solution, filtered through GF/F filters (Cytiva), sealed in aluminum foil packets and stored at -80<sup>o</sup>C in the dark. Samples were shipped on dry ice to Western Washington University’s Institute for Watershed Studies laboratory where the GF/F filters were ground and chlorophyll extracted with acetone before determining chlorophyll levels by measuring &nbsp;fluorescence before and after acidification with 0.1 N HCl using a Turner Designs TD700 or 10 AU. &nbsp;</p>
<p>The measurement of acetaldehyde and ethanol uptake rates has been described in detail in de Bruyn et al. (2021). Briefly, samples were split into two aliquots; one aliquot was filtered through 0.2 µm filters (Millipore) to remove abiotic particles and microorganisms to serve as abiotic controls for biological uptake.&nbsp; About 150 mL from the other unfiltered aliquot was placed in a glass syringe, spiked with deuterated acetaldehyde or ethanol (d-4; Aldrich 98% deuterated; 40-100 nM)) and used to measure acetaldehyde or ethanol &nbsp;biological degradation rates.&nbsp; Syringes were kept in the dark in a water bath set to the temperature of the water when sampled. Degradation rates were determined from changes in deuterated acetaldehyde or ethanol concentrations over 4 to 5-hours.&nbsp; Every ~45 minutes, samples were removed from the syringe and deuterated acetaldehyde or ethanol measured by purge and trap gas chromatography mass spectrometry (Shimadzu GC-14A/HP5973MSD).&nbsp; Details of this measurement are given in de Bruyn et al. (22021). In brief, deuterated acetaldehyde or ethanol is sparged using ultrapure He, trapped in a glass bead trap at liquid nitrogen temperatures, thermally desorbed, and analyzed on a Poroplot Q column (Shimadzu, 14A) with MS detection (Agilent 5973).</p>
Specified by the Principal Investigator(s)
<p>Acetaldehyde and ethanol concentrations in unfiltered incubations decreased exponentially with time consistent with first-order or pseudo-first-orde rkinetics. For first order or pseudo first order kinetics the rate of reaction depends only on the concentration of a single species, in this case acetaldehyde or ethanol: Reaction rate = -dA/dt = k [A] &nbsp; &nbsp; &nbsp;where [A] is the acetaldehyde or ethanol concentration and k is the first order rate constant. Separating variables and integrating results in the integrated rate law: ln [A]t/[A]t=0 = - kt &nbsp; &nbsp; &nbsp; &nbsp;Where [A]t is the concentration of acetaldehyde or ethanol at time t and [A]t=0 is the concentration of acetaldehyde or ethanol at t=0. &nbsp;Therefore a plot of the natural log of the acetaldehyde concentration at time t divided by the concentration at time t=0 is linear and the slope is the first-order rate constant with units of time-1. &nbsp;This is summarized from De Bruyn et al. (2021).</p>
<p>Absorbance was converted to absorption coefficient at a particular wavelength by dividing the absorbance by 0.01 and multiplying by 2.303. This is described in Juetten et al. (2025).</p>
Specified by the Principal Investigator(s)
* adjusted parameter names to comply with database requirements
* added lat/lon of sampling sites to dataset
* converted sampling date to ISO format
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Shimadzu TOC analyzer
Shimadzu TOC analyzer
PI Supplied Instrument Name: Shimadzu TOC analyzer PI Supplied Instrument Description:Shimadzu TOC analyzer was used to measure DOC concentrations Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
GC/MS; Shimadzu GC-14A/HP5973MSD
GC/MS; Shimadzu GC-14A/HP5973MSD
PI Supplied Instrument Name: GC/MS; Shimadzu GC-14A/HP5973MSD PI Supplied Instrument Description:Purge and trap gas chromatography mass spectrometry (GC/MS; Shimadzu GC-14A/HP5973MSD) was used to measure acetaldehyde concentrations Instrument Name: Gas Chromatograph Mass Spectrometer Instrument Short Name: Instrument Description: Instruments separating gases, volatile substances or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay by a mass spectrometer.
Hanna Instruments HI 9829
Hanna Instruments HI 9829
PI Supplied Instrument Name: Hanna Instruments HI 9829 PI Supplied Instrument Description:Hanna Instruments HI 9829 multiparameter probe was used to measure water quality parameters Instrument Name: Multi Parameter Portable Meter Instrument Short Name: Instrument Description: An analytical instrument that can measure multiple parameters, such as pH, EC, TDS, DO and temperature with one device and is portable or hand-held.
Horiba Aqualog
Horiba Aqualog
PI Supplied Instrument Name: Horiba Aqualog PI Supplied Instrument Description:Horiba Aqualog spectrometer was used to measure absorbance Instrument Name: Spectrometer Instrument Short Name:Spectrometer Instrument Description: A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0460/