Isolation and Characterization of Soil Fulvic Acid

Mir Munsif Ali Talpur; Tajnees Pirzada; Waheed Ali; Mohammad Hussain Arain; Samina Rajper; Mazar Khaskheli

doi:10.21743/pjaec/2016.06.002

Authors

Mir Munsif Ali Talpur Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan Author
Tajnees Pirzada Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan Author
Waheed Ali Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan Author
Mohammad Hussain Arain Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan Author
Samina Rajper Department of Computer Science, Shah Abdul Latif University, Khairpur, Sindh, Pakistan Author
Mazar Khaskheli Institute of Advanced Research Studies in Chemical Sciences, University of Sindh, Jamshoro, Pakistan Author

DOI:

https://doi.org/10.21743/pjaec/2016.06.002

Keywords:

Fulvic acid; Agriculture soil; AAS; UV-Visible; FTIR and NIR

Abstract

Fulvic acid was isolated from the agriculture soil of District Naushahro Feroz, Sindh, Pakistan by International Humic Substances Society (IHSS) method. The nutrient contents of the soil like K, Ca, Na, Fe and Zn were determined by using the Atomic Absorption spectrophotometer (AAS). The spectroscopic analysis was carried out by studying the UV-Vis, FT-IR and NIR spectra of isolated compounds. The data has been compared with the literature and correlated. Moisture as well as texture shows good water holding capacity and silt- loam type of soil. pH and EC are indicators of the fertility of soil to be beneficial for plantation. The spectral data (UV-Visible, FTIR and NIR) supports the characteristic functional groups (-COOH, C=O, -OH, -NH₂, C=C, CH₂ and polysaccharides) present in fulvic acid. E₄/E₆ values depict its hydrophilic nature, having less aromatic and more aliphatic groups. The presence of metal ions indicates its chelating ability.