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Quantitative Detection of Nitrate in Water and Wastewater
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by Surface Enhanced Raman Spectroscopy
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Shashikanth Gajaraja**, Fan Cuib**, Mengshi Linb and Zhiqiang Hua*
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a
Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO
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b
Food Science Program, Division of Food Systems and Bioengineering, University of Missouri,
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Columbia, MO
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*
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Email: huzh@missouri.edu
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**
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Corresponding Author - Phone: 573-884-0497; Fax: 573-882-4784;
Contributed equally to this work
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Fig. S1. Effect of sulfate concentration on nitrate detection by SERS.
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Fig. S2. Effect of phosphate concentration on nitrate detection by SERS.
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Fig. S3. Effect of chloride concentration on nitrate detection by SERS. (Nitrate peak at 10 mM
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chloride concentration is invisible to the naked eye and read using Delight software)