照片由大學部學生 Ashlyn Erpenbach, Sang Wook Lee, Elizabeth Liu, 和 Cameron Zalewski 所提 供, 在此感謝來自 P. Doolittle 和 Ashlyn Erpenbach, University of Wisconsin–Madison 的善意。
請參考 L. Khalafi, P. Doolittle, and J. Wright, “Speciation and Determination of Low Concentration of Iron in Beer Samples by Cloud Point Extraction,” J.Chem. Ed. 2018, 95, 463。