Aircraft Measurements of Total Mercury and Monomethyl Mercury in Summertime Marine Stratus Cloudwater from Coastal California, USA

2018 ◽  
Vol 52 (5) ◽  
pp. 2527-2537 ◽  
Author(s):  
Peter Weiss-Penzias ◽  
Armin Sorooshian ◽  
Kenneth Coale ◽  
Wesley Heim ◽  
Ewan Crosbie ◽  
...  
Keyword(s):  
Total Mercury ◽  
Aircraft Measurements ◽  
Marine Stratus ◽  
Monomethyl Mercury

Sampling for mercury at subnanogram per litre concentrations for load estimation in rivers

2000 ◽  
Vol 57 (5) ◽  
pp. 1073-1079 ◽  
Author(s):  
John A Colman ◽  
Robert F Breault
Keyword(s):  
Total Mercury ◽  
Mercury Species ◽  
Load Estimation ◽  
Mean Square ◽  
Field Equipment ◽  
Low Field ◽  
Monomethyl Mercury ◽  
Mercury Load ◽  
Standard Deviations ◽  
Mean Square Errors

Estimation of constituent loads in streams requires collection of stream samples that are representative of constituent concentrations, that is, composites of isokinetic multiple verticals collected along a stream transect. An all-Teflon isokinetic sampler (DH-81) cleaned in 75°C, 4 N HCl was tested using blank, split, and replicate samples to assess systematic and random sample contamination by mercury species. Mean mercury concentrations in field-equipment blanks were low: 0.135 ng·L-1 for total mercury (ΣHg) and 0.0086 ng·L-1 for monomethyl mercury (MeHg). Mean square errors (MSE) for ΣHg and MeHg duplicate samples collected at eight sampling stations were not statistically different from MSE of samples split in the laboratory, which represent the analytical and splitting error. Low field-blank concentrations and statistically equal duplicate- and split-sample MSE values indicate that no measurable contamination was occurring during sampling. Standard deviations associated with example mercury load estimations were four to five times larger, on a relative basis, than standard deviations calculated from duplicate samples, indicating that error of the load determination was primarily a function of the loading model used, not of sampling or analytical methods.

scholarly journals Sediment-water exchange of total mercury and monomethyl mercury in the San Francisco Bay-Delta

2004 ◽  
Vol 49 (5) ◽  
pp. 1512-1527 ◽  
Author(s):  
Key-Young Choe ◽  
Gary A. Gill ◽  
Ronald D. Lehman ◽  
Seunghee Han ◽  
Wesley A. Heim ◽  
...  
Keyword(s):  
San Francisco ◽  
Water Exchange ◽  
Total Mercury ◽  
San Francisco Bay ◽  
Monomethyl Mercury

Total mercury, methylmercury, methylmercury production potential, and ancillary streambed-sediment and pore-water data for selected streams in Oregon, Wisconsin, and Florida, 2003-04

Data Series ◽  
10.3133/ds375 ◽  
2008 ◽  
Author(s):  
Mark C. Marvin-DiPasquale ◽  
Michelle A. Lutz ◽  
David P. Krabbenhoft ◽  
George R. Aiken ◽  
William H. Orem ◽  
...  
Keyword(s):  
Pore Water ◽  
Total Mercury ◽  
Production Potential ◽  
Streambed Sediment ◽  
Methylmercury Production

Total Mercury and Methylmercury in Indiana Streams, August 2004-September 2006

2008 ◽  
Author(s):  
Amanda L. Ulberg ◽  
Martin R. Risch
Keyword(s):  
Total Mercury

Aircraft and Radar Measurements of Marine Stratus

2004 ◽  
Author(s):  
Gabor Vali
Keyword(s):  
Marine Stratus ◽  
Radar Measurements
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