Utilizing In Situ Ultraviolet-Visual Spectroscopy to Measure Nutrients and Sediment Concentrations in Stormwater Runoff

Houle, James J.; Macadam, Daniel R.; Ballestero, Thomas P.; Puls, Timothy A.

doi:10.1061/jswbay.0000994

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…First, a larger variety of concentration ranges could be used to better characterize the strength of the relationship between UV-Vis absorption and NO 3 for the low-cost system. Furthermore, a larger variety of chemical constituents, including naturally occurring organic compounds and suspended particles (i.e., turbidity), could be used to create samples more representative of specific types of natural water samples such as wastewater and stormwater runoff and expand upon studies that have already applied spectroscopy in these fields using off-the-shelf equipment (Etheridge et al, 2014;Houle et al, 2022;Huebsch et al, 2015;Vaughan et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Low-Cost UV-Vis Spectroscopy for Measuring Nitrate Using Synthetic Water Samples

Carter,

Sarkees,

Singh

et al. 2023

Journal of the ASABE

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Highlights A novel low-cost, modular spectroscopy system is compared to a standard system using synthetic samples, principal component analysis, and partial least squares regression. The information contained in the data produced by the two systems is similar according to principal component analysis. The low-cost system was able to accurately predict nitrate concentrations in concentrated and diluted samples using partial least squares regression. The methodology could be applied to water quality analysis in agriculture and water resources management. Abstract. Water quality data collection is an essential component of water systems management. For instance, the effective management of nutrients in hydroponic systems is necessary for maximizing yields efficiently and sustainably. Additionally, nutrients in natural and engineered waterbodies must be monitored to ensure they are meeting the required chemical characteristics for their ecological and social functions. However, conventional water quality data collection methods place limitations on water systems management due to their high resource requirements. Nitrate (NO3) is a major nutrient in ecological and agricultural systems, which can be reliably measured with ultraviolet-visible (UV-Vis) spectroscopy, a highly established technique for water quality analysis. The goal of this research was to evaluate a novel, low-cost, modular UV-Vis spectroscopy setup (GatorSpec) for the measurement of NO3 concentration in chemically complex solutions. UV-Vis absorbance of synthetic samples was measured using the GatorSpec and a commonly used bench-top laboratory spectroscopy system, the NanoDrop2000C. These data were analyzed using principal component analysis (PCA) to compare the spectral data produced by each system and partial least squares (PLS) regression to compare their ability to predict NO3 concentration. Results showed that data from both measurement systems were similar, indicating that the low-cost GatorSpec provided similar measurement accuracy to that of the laboratory reference system, the NanoDrop2000C. The PLS results revealed that for the diluted samples, the models derived from both systems were very good at predicting NO3 concentration. With these outcomes, it can be concluded that the GatorSpec is effective at measuring NO3 concentration in complex solutions and is comparable in performance to that of the NanoDrop2000C. In the future, this low-cost setup could be used to manage NO3 concentrations more efficiently in various applications such as hydroponic plant production, environmental monitoring, and stormwater treatment, which, in turn, could reduce the economic and environmental costs of these systems. Keywords: Low-cost, Synthetic samples, Ultraviolet-visible absorption spectroscopy, Water quality.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Low-Cost UV-Vis Spectroscopy for Measuring Nitrate Using Synthetic Water Samples

Carter,

Sarkees,

Singh

et al. 2023

Journal of the ASABE

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Use of a simple passive monitoring system to assess detention basin stormwater

2023

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The ability to monitor stormwater quality while in detention basins would be useful for stormwater managers. A simple passive method of monitoring vertical elevations of pooled stormwater in detention basins was developed. The simple method used plastic buckets with holes drilled into them to collect water as stormwater filled the basin from first flush to peak. The method was installed at three different detention basins and stormwater was collected using the simple passive system at different vertical pool elevations for three storm events. Total suspended solids were found to decline from first flush in keeping with other studies on stormwater. In addition, total phosphorous and E. coli were found to differ among storm events and pool elevations. The simple passive vertical water quality assessment system was found to produce reliable results similar to what others have found. The advantages of this assessment method were that it reduced exposure of personnel to hazardous conditions, was low cost, and was a simple, uncomplicated way to sample stormwater.

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Total Phosphorous and Mineral Content Determination in Rock Phosphates using ICP-MS

Alam,

Biswas,

Anil

et al. 2023

Communications in Soil Science and Plant Analysis

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Utilizing In Situ Ultraviolet-Visual Spectroscopy to Measure Nutrients and Sediment Concentrations in Stormwater Runoff

Cited by 4 publications

References 25 publications

Evaluation of Low-Cost UV-Vis Spectroscopy for Measuring Nitrate Using Synthetic Water Samples

Evaluation of Low-Cost UV-Vis Spectroscopy for Measuring Nitrate Using Synthetic Water Samples

Use of a simple passive monitoring system to assess detention basin stormwater

Total Phosphorous and Mineral Content Determination in Rock Phosphates using ICP-MS

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