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Balakrishnan VK, Terry KA, Toito J. Determination of sulfonamide antibiotics in wastewater: a comparison of solid phase microextraction and solid phase extraction methods. J Chromatogr A. 2006 Oct 27;1131(1-2):1–10. doi: 10.1016/j.chroma.2006.07.011. PMID: 16879830. |