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Novel optical absorption approach for black carbon (BC) measurement in snow

Publication ,  Conference
Shafer, M; Schauer, J; Bergin, M
Published in: ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts
January 1, 2008

□ We developed a method to quantify tracq. levels of BC in snow. The approach should have general applicability to many aqueous systems. □ The method requires only a few mL of melted snow, unlike other approaches which demand many liters of snow. The approach is ideally suited for limited volume ice-core thin sections and, importantly, can be readily interfaced to continuous ice and snow melting devices for real-time analysis. □ Only minimal sample preparation is required, thus the potential for contamination and loss biases are reduced. The analysis can be performed on-site, eliminating transport/storage impacts. □ The optical approach exhibits high signal-to-noise metrics; superior to alternative methods. Information rich spectra are acquired over the wavelength range of 400 to 700 nm. □ The correction for light absorption from soluble species is small (<6%), while the inorganic (soil-dust) correction can be much larger (20-60%). □ Measured BC concentrations are consistent with those reported for remote arctic snow.

Duke Scholars

Published In

ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts

ISSN

1524-6434

Publication Date

January 1, 2008

Volume

48

Issue

1

Start / End Page

451 / 456
 

Citation

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MLA
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Shafer, M., Schauer, J., & Bergin, M. (2008). Novel optical absorption approach for black carbon (BC) measurement in snow. In ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts (Vol. 48, pp. 451–456).
Shafer, M., J. Schauer, and M. Bergin. “Novel optical absorption approach for black carbon (BC) measurement in snow.” In ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts, 48:451–56, 2008.
Shafer M, Schauer J, Bergin M. Novel optical absorption approach for black carbon (BC) measurement in snow. In: ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. 2008. p. 451–6.
Shafer, M., et al. “Novel optical absorption approach for black carbon (BC) measurement in snow.” ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts, vol. 48, no. 1, 2008, pp. 451–56.
Shafer M, Schauer J, Bergin M. Novel optical absorption approach for black carbon (BC) measurement in snow. ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. 2008. p. 451–456.

Published In

ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts

ISSN

1524-6434

Publication Date

January 1, 2008

Volume

48

Issue

1

Start / End Page

451 / 456