Icap 7400 system

Water quality (TDS, DO, conductivity, pH, and temperature) was also measured at each site using a YSI Pro Plus probe. Anions, cations, and organic acids in water and sediment pore water were measured using a Dionex ICS 5000+ instrument (Thermo Fisher Scientific, Waltham, MA, USA) as described in the supplemental material. A list of all ions can be found in Table S10. Dissolved trace elements were measured at the University of Tennessee Water Chemistry Core Facility using an inductively coupled plasma optical emission spectrometer (ICP-OES) iCAP 7400 system (Thermo Fisher Scientific) following EPA method 200.7 rev 4.4 (59 ). As an internal check, Ca, K, and Na were measured using both IC and ICPOES; samples measured with ICP are labeled X_ICP. The Wilcoxon rank sum test was used to determine statistical significance (α = 0.05) based on UOG status.

Water quality (TDS, DO, conductivity, pH, and temperature) was also measured at each site using a YSI Pro Plus probe. Anions, cations, and organic acids in water and sediment pore water were measured using a Dionex ICS 5000+ instrument (Thermo Fisher Scientific, Waltham, MA, USA) as described in the supplemental material. A list of all ions can be found in Table S10. Dissolved trace elements were measured at the University of Tennessee Water Chemistry Core Facility using an inductively coupled plasma optical emission spectrometer (ICP-OES) iCAP 7400 system (Thermo Fisher Scientific) following EPA method 200.7 rev 4.4 (59 ). As an internal check, Ca, K, and Na were measured using both IC and ICPOES; samples measured with ICP are labeled X_ICP. The Wilcoxon rank sum test was used to determine statistical significance (α = 0.05) based on UOG status.