Additional file 3: Figure S3.

FTIR spectra of CHI (a) and CHI-ZnS (b) in the range of 3,700 to 3,050 cm-1 at pH 6.0 ± 0.2 (A), pH = 5.0 ± 0.2 (B) and pH = 4.0 ± 0.2 (C).

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