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Ashu-Ayem ER, Nitschke U, Monahan C, Chen J, Darby SB, Smith PD, O'Dowd CD, Stengel DB, Venables DS.Ashu-Ayem ER, et al. Among authors: nitschke u.Environ Sci Technol. 2012 Oct 2;46(19):10413-21. doi: 10.1021/es204534v. Epub 2012 Aug 30.Environ Sci Technol. 2012.PMID: 22934673