Verification of multiple phosphorus analyzers for use in surface-water applications

Abstract

The Next Generation Water Observing System supported the fieldwork and compilation of the data and writing of this report. The author would like to thank the manufacturers Hach, Sea-Bird Scientific, and YSI Inc. for their cooperation and technical assistance.

Evaluation of sensors for continuous monitoring of harmful algal blooms in the Finger Lakes region, New York, 2019 and 2020

“…Less than 1 percent of sensor measurements (11 out of 1,454) were above the detection limit, and all were at Owasco Lake in October 2020. Results from this study indicate the orthophosphate sensor did not experience the challenges reported in other types of environments in these low-turbidity systems (Peake, 2022); however, concentrations were too low to conduct a meaningful comparison of sensor-and laboratorymeasured concentrations.…”

“…The orthophosphate sensor used wet chemistry to measure orthophosphate concentration. Because of this approach, standard USGS protocols for determining fouling, calibration drift error, or both (Wagner and others, 2006) are not applicable to the orthophosphate sensor (Peake, 2022). Therefore, data collection methods were modified in accordance with manufacturer instructions (Sea-Bird Scientific, 2019).…”