Title

Elemental and oxidized mercury in ambient air at Rocky Flats, Colorado

Description

This is a dataset of elemental and oxidized mercury in the ambient atmosphere at latitude 39.912799 and longitude -105.188587. This is the locations of the Rocky Flats North air quality monitoring station, operated by the Colorado Department of Public Health and Environment. We collected these measurements using a dual-channel atmospheric mercury speciation instrument.

Document Type

Dataset

DCMI Type

Dataset

File Format

.csv

Publication Date

5-21-2019

Funder

NSF, Division of Atmospheric and Geospace Sciences

Award Number

NSF, Division of Atmospheric and Geospace Sciences 1700722

Award Title

Collaborative Research: Refining and Testing Methods for Identifying and Quantifying Gaseous Oxidized Mercury in Air

Methodology

Briefly, the instrument pulled air through a teflon-coated elutriator and particle impactor and then through a 6 m 1/4" PFA teflon tube that was heated to 120 degrees C. The air was then pulled either through a pyrolyzer that was heated to 650 degrees C, or through a series of two cation-exchange membranes. The pyrolyzer converted all mercury to elemental mercury, while the cation-exchange membranes captured oxidized mercury and only allowed elemental mercury to pass through. After passing through the membranes or pyrolyzer, the air was sampled for elemental mercury concentration by a Tekran 2537B analyzer. The difference between total mercury sampled through the pyrolyzer stream and elemental mercury sampled through the membrane stream was oxidized mercury. We measured total mercury for five minutes, then elemental mercury for five minutes, and then back again to total mercury. We calculated oxidized mercury for each ten-minute measurement set. We then averaged the measurements together for each one-hour period.

Referenced by

Lyman S., Gratz L., Elgiar T., 2019. Calibrated measurements of elemental and oxidized mercury with a dual channel instrument at Rocky Flats, Colorado. In preparation for submission for publication.

Start Date

7-24-2018

End Date

8-17-2018

Language

eng

Code Lists

See README file

Disciplines

Environmental Chemistry

License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Files

README.txt (2 kB)
MD5: 331b82ce759fb387ad4602e41a5e9cfe

HgDualChan_RFN2018_hourly.csv (19 kB)
MD5: ffa51c6fb863f5cfe4af3cdeba2c94b5

Share

Article Location

 
COinS