title: Development of a Particulate Mass Measurement System for Quantification of Ambient Reactive Mercury.
abstract: The Teledyne Advanced Pollution Instrumentation (TAPI) model 602 BetaPlusparticulate system provides nondestructive analysis of particulate matter (PM2.5) mass concentration. This instrument was used to determine if measurements made with cation exchange membranes (CEM) were comparable to standard methods, the β attenuation method at two locations in Reno, NV and an environmental β attenuation method and gravimetric method at Great Basin National Park, NV. TAPI PM2.5CEM measurements were statistically similar to the other three PM2.5methods. Once this was established, the second objective, a destructive method for measurement of reactive mercury (RM = gaseous oxidized and particulate bound Hg), was tested. Samples collected at 16.7 L per min (Lpm) for 24 h on CEM from the TAPI were compared to those measured by the University of Nevada, Reno-Reactive Mercury Active System (UNRRMAS, 1 Lpm) CEM and a Tekran 2537/1130/1135 system (7 Lpm). Given the use of CEM in the TAPI and UNRRMAS, we hypothesized that both should collect RM. Due to the high flow rate and different inlets, TAPI data were systematically lower than the UNRRMAS. Correlation between RM concentrations demonstrated that the TAPI may be used to estimate 24 h resolution RM concentrations in Nevada.
authors.affiliation: Department of Natural Resources and Environmental Sciences, University of Nevada , Reno, 1664 N. Virginia St. Reno, Nevada 89557, United States.
authors.forename: Ashley M
authors.identifier: 0000-0002-7956-7565
authors.initials: AM
authors.lastname: Pierce
authors.affiliation: Department of Natural Resources and Environmental Sciences, University of Nevada , Reno, 1664 N. Virginia St. Reno, Nevada 89557, United States.
authors.forename: Mae Sexauer
authors.initials: MS
authors.lastname: Gustin
mesh_terms: D000393:Air Pollutants; D004784:Environmental Monitoring; D004787:Environmental Pollution; D008628:Mercury; D052638:Particulate Matter
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D008628:Mercury