International Journal of Analytical Chemistry / 2020 / Article / Tab 1

Research Article

Removal of Fluorescein Dye from Aqueous Solutions Using Natural and Chemically Treated Pine Sawdust

Table 1

FT-IR peaks of the functional groups in NPS and SPS.

NPS, wavenumber (cm−1)SPS, wavenumber (cm−1)Frequency ranges (cm−1)Groups (bonds)Functional groups

342334153500–3200O–H stretchingPhenolic or alcoholic
29152900<3000Sp3 C-H stretchingAlkane groups
170016901850–1600C=OCarbonyl group
165016501750–1600C=CAlkene groups
145014801500–1400Sp2 C-H bendingAlkene groups
13401340<1400Sp3 C-H bendingAlkane groups
125012401300–1100Sp2 C-OEster
105010501100–1000Sp3 C–OAlcohol
530545550–450Sp2 C–H bendingAromatic

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