The Alliance for Coastal Technologies (ACT), is a NOAA-funded partnership or the academe, resource managers, and private sectorto foster developemnt and adoption of reliable sensors for use in monitoring coastal, freshwater and ocean environments. As part of the Alliance for Coastal Technologies (ACT), the Gulf of Mexico Nutrient Sensor Pilot Project aims to evaluate the "operational status" of newly commercially available nutrient sensors through integration into existing monitoring programs. Operational status is being evaluated through a combination of factors, including logistics required for deployment; ease of integration into shared data management systems; operation and maintenance schedules and requirements; and quality of data. These activities support the ongoing efforts in ACT, including the interagency Nutrient Sensor Challenge, to advance nutrient sensing in critical ecosystems, such as the northern Gulf of Mexico. With funding from NOAA through ACT and the Gulf of Mexico Coastal Ocean Observing System (GCOOS), researchers at University of Louisiana at Lafayette are coordinating with partners at the University of Texas Marine Science Institute, the Louisiana Universities Marine Consortium, Dauphin Island Sea Lab, Sanibel-Captiva Conservation Foundation, and the USGS in Tampa Bay to build a network of continuous nitrate sensors in coastal and estuarine ecosystems around the northern Gulf of Mexico.
These activities support the ongoing efforts in ACT, including the interagency Nutrient Sensor Challenge, to advance nutrient sensing in critical ecosystems, such as the northern Gulf of Mexico. With funding from NOAA through ACT and the Gulf of Mexico Coastal Ocean Observing System (GCOOS), researchers at University of Louisiana at Lafayette are coordinating with partners in TX, LA, AL, and FL to build a network of continuous nitrate sensors in coastal and estuarine ecosystems around the northern Gulf.
These data are preliminary and may be revised upon further analysis. They are being provided as a demonstration of the capabilities and integration of this nutrient sensor, as an educational tool, and to engage the public.
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NO2+NO3
Water Temperature
CDOM
Conductivity
Turbidity
Salinity
Sensor Depth
Dissolved Oxygen (Saturated)
Dissolved Oxygen
Chlorophyll
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WIZ: Portable in situ Probe for Water Analysisby SYSTEA SpA This portable probe for water analysis was used to measure time series of:
The package included Control Panel (WCP) software the allows to users to setup any WIZ probe, using an RS-232 serial port; it can be used even remotely trough a GSM modem. Also, it included Zetalog and Zetaced packages that allows to use WIZ at the higher level. Zetalog turn on WIZ just before the measurement cycle and turn it off as soon completed allowing power saving. Data are sent trough GPRS to Zetaced, running on a web server, where are logged and can be retrieved, validated and displayed as table or graphics trend.
Features of Interest
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| Technology | µLFR* Technology, Batch, sequential for all MP versions | |
| Applications | Hydrology/Water Resources/Coastal monitoring | |
| Measurements frequency | Programmable | |
| Cycle time | MP4 Nutrients, 40 minutes, for a complete cycle, other configurations from 40 to 60 minutes. | |
| Samples preheating | Yes | |
| Max number of reagents | 8 reagents + QC check solution and Wash solution | |
| Reagent stability | 4-10 weeks, depending on the water temperature | |
| Deployment time | Up to 2.5 months | |
| Body material | PVC | |
| Max depth | -10m | |
| Operating temperature | 4° - 40°C | |
| Wastes | n. 1 x 5L bag for wastes containing reagents, free waste for washings with DI Water & Sample | |
| Flow cell type | Quartz 4 measuring sides: 10mm x 2.5mm | |
| Detectors | Standard Colorimetric methods: multi-beam fiber optic colorimeter with silicon detector; Fluorimetric methods: LED/filters: Ex./Em. at specific wavelength; Turbidimetric: scattering at 800nm; COD UV: LED 254nm corrected at 525nm; TN/NO3 UV: Xenon flash lamp, filters 220 and 270nm | |
| Detector technology | LED/LED UV/UV filters | |
| Reading methods | Absorbance/Fluorimetry/UV/Nephelometry | |
| Reduction Module for NO3 | Yes by UV photoreduction | |
| WIZ Control Panel Software | Compatible with Windows XP, 7.0 & 8.0 (lates version, not tested), WIZ setup and operations, data download to computer | |
| QC solution | Concentrated for long term stability, diluted on line when required | |
| Off scale sample dilution and reanalyze | Yes | |
| Automated sample spike | Yes | |
| Calibration | Automated after reagent replacement | |
| Power supply | 12VDC | |
| Power requirements | 3W in Stand By, 8W (average) during analysis, max 1.5A; MP4 standard 0.46Ah | |
| Dimensions | Analytical unit: 140mm (diameter) x 535mm (height) Reagent canister (standard): 70mm (diameter) x 230mm (height) | |
| Connector | Submergible male 6 poles for RS232 and 12VDC power | |
| Cable | Submergible Standard length 10m female connector | |
| Data output | RS232 | |
| Filtration options | 10/25/100/400uM with or w/o self cleaning, 0.25uM self purging microfilter | |
| Standard package | WIZ probe - Reagents canister standard (Enlarged version on request) - 12 VDC power supply for maintenance and setup - Reagent bag filling tool - 10 m submergible cable - Carrying case - Wiz control panel software license - Start-up kit | |
| Options | Customized cable length; Enlarged Reagent Canister; Zetalog - Zetaced setup and license |
