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BioMed Research International
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2015
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Article
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Tab 2
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Research Article
Cadmium Removal from Aqueous Systems Using
Opuntia albicarpa
L. Scheinvar as Biosorbent
Table 2
Functional groups present in treated
Opuntia albicarpa
L. Scheinvar and their corresponding infrared absorption frequencies.
Frequency (cm
−1
)
Assignment
3600
N–H amines groups
3428
Hydroxyl group
2850
C–H stretching
1623
C=O stretching of COOH
1414
Symmetric bending of CH
3
1317
C–N groups
1050
C–O groups