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(a) Total nitrogen content present in beads with varying chitosan composition coagulated in 2 M acetic acid (A), 2 M hydrochloric acid (B) and 2 M sulfuric acid (C). (b,c) A comparison of chlorine and sulphur with the nitrogen content in B and C type. (d) Nitrogen element distribution measured via spot analysis in 70A, 70B, and 70C and (e) Presentation of possible ionic interactions in A, B and C type.
