Additional file 2: Figure S2.

FTIR spectra of CHI (a) and CHI-ZnS (b) at pH = 5.0 ± 0.2. Vibrational regions: 1,750 to 1,475 cm-1 (left) and 1,250 to 950 cm-1 (right).

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Ramanery et al. Nanoscale Research Letters 2013 8:512   doi:10.1186/1556-276X-8-512