@article { ISI:000277965100004,
	title = {Coastal New England pilot study to determine fossil and biogenic formaldehyde source contributions using radiocarbon},
	journal = {JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES},
	volume = {115},
	year = {2010},
	month = {MAY 18},
	type = {Article},
	abstract = {Compound specific radiocarbon analyses of atmospheric formaldehyde are reported as fraction modern (Fm) for a limited number of winter and summer air samples collected in coastal southern New England in 2007. The 11 of 13 samples with Fm < 0.2 were collected under the influence of the semipermanent Bermuda high-pressure system with transport from the Washington, D. C., to New York City urban corridor. The two samples with Fm > 0.2 (max similar to 0.35) were collected on days with strong northwesterly flow and the least urban impact. The Fm data were combined with VOC observations from the Rhode Island Department of Environmental Management, estimates of oxygenated VOC (OVOC), and back trajectories to interpret the relative contributions of biogenic and fossil carbon sources. It is argued that CH2O sources were dominated by pollutant VOCs and OVOCs from upwind coastal cities as opposed to more local biogenic VOCs at the times of sample collection.},
	issn = {2169-897X},
	doi = {10.1029/2009JD012810},
	author = {Shen, Haiwei and Heikes, Brian G. and Merrill, John T. and McNichol, Ann P. and Xu, Li}
}
@article { ISI:000268455600046,
	title = {Radiocarbon Analysis of Atmospheric Formaldehyde Using Cystamine Derivatization},
	journal = {ANALYTICAL CHEMISTRY},
	volume = {81},
	number = {{15}},
	year = {2009},
	month = {AUG 1},
	pages = {6310-6316},
	type = {Article},
	abstract = {A compound specific radiocarbon analysis method was developed to evaluate the C-14 composition of atmospheric formaldehyde. In this method, gaseous formaldehyde was collected with a high-volume air sampler using glass-fiber filters pretreated with sodium bisulfite. Collected formaldehyde was then released into water and derivatized with cysteamine to thiazolidine. The thiazolidine was extracted into dichloromethane and concentrated by evaporation. Concentrated thiazolidine was separated from other compounds using preparative capillary gas chromatography and uniquely collected as a phosphate salt with a fraction collector. The C-14 composition of the salt was analyzed by accelerator mass spectrometry after combustion to CO2 and subsequent reduction to graphite. In a pilot study, ambient formaldehyde samples collected on the roof of the CACS building at Narragansett Bay Campus, Narragansett, RI, showed a significantly larger fraction of fossil carbon than modern carbon.},
	issn = {0003-2700},
	doi = {10.1021/ac9004666},
	author = {Shen, Haiwei and McNichol, Ann P. and Xu, Li and Gagnon, Alan and Heikes, Brian G.}
}
