@article {1559,
	title = {Identification of 4-Hydroxycumyl Alcohol As the Major MnO2-Mediated Bisphenol A Transformation Product and Evaluation of Its Environmental Fate.},
	journal = {Environ Sci Technol},
	volume = {49},
	year = {2015},
	month = {2015 May 19},
	pages = {6214-21},
	abstract = {<p>Bisphenol A (BPA), an environmental contaminant with weak estrogenic activity, resists microbial degradation under anoxic conditions but is susceptible to abiotic transformation by manganese dioxide (MnO2). BPA degradation followed pseudo-first-order kinetics with a rate constant of 0.96 ({\textpm}0.03) min(-1) in the presence of 2 mM MnO2 (0.017\% w/w) at pH 7.2. 4-hydroxycumyl alcohol (HCA) was the major transformation product, and, on a molar basis, up to 64\% of the initial amount of BPA was recovered as HCA. MnO2 was also reactive toward HCA, albeit at 5-fold lower rates, and CO2 evolution (i.e., mineralization) occurred. In microcosms established with freshwater sediment, HCA was rapidly biodegraded under oxic, but not anoxic conditions. With a measured octanol-water partition coefficient (Log K(ow)) of 0.76 and an aqueous solubility of 2.65 g L(-1), HCA is more mobile in saturated media than BPA (Log K(ow) = 2.76; aqueous solubility = 0.31 g L(-1)), and therefore more likely to encounter oxic zones and undergo aerobic biodegradation. These findings corroborate that BPA is not inert under anoxic conditions and suggest that MnO2-mediated coupled abiotic-biotic processes may be relevant for controlling the fate and longevity of BPA in sediments and aquifers.</p>},
	issn = {1520-5851},
	doi = {10.1021/acs.est.5b00372},
	author = {Im, Jeongdae and Prevatte, Carson W and Campagna, Shawn R and L{\"o}ffler, Frank E}
}
@article {1563,
	title = {Interference of ferric ions with ferrous iron quantification using the ferrozine assay.},
	journal = {J Microbiol Methods},
	volume = {95},
	year = {2013},
	month = {2013 Dec},
	pages = {366-7},
	abstract = {<p>The ferrozine assay is a widely used colorimetric method for determining soluble iron concentrations. We provide evidence for a heretofore unrecognized interference of ferric ions (Fe(3+)) on ferrous iron (Fe(2+)) measurements performed in the dark. Fe(3+) concentrations affected the absorbance measurements, which linearly increased with incubation time.</p>},
	keywords = {Chemistry Techniques, Analytical, Colorimetry, Darkness, Diagnostic Errors, Ferric Compounds, Ferrous Compounds, Ferrozine, Ions, Iron, Time Factors},
	issn = {1872-8359},
	doi = {10.1016/j.mimet.2013.10.005},
	author = {Im, Jeongdae and Lee, Jaejin and L{\"o}ffler, Frank E}
}
