Characterisation of some soils from flood basin in Amakohia, Owerri, Nigeria. Issue 16 (16th December 2022)

• Record Type: Journal Article
• Authors: Enyoh, Christian Ebere; Isiuku, Beniah Obinna
• Is Part Of: International journal of environmental analytical chemistry. Volume 102:Issue 16(2022)
• Page Start: 3766
• Page End: 3785
• Publication Date: 2022-12-16
• Subjects: Canna generalis -- flood basin -- nutrient index -- phytoremediation -- risk assessment -- urban soils; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2020.1773455
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: The study characterised soils at two depths, i.e. 5 cm and 10 cm from flood basin in Amakohia, Owerri, Nigeria. Overall, 20 samples were collected following a simple random sampling technique and analysed using standard methods. Results showed that the soil had sandy loam textural class with mean pH of 6 ± 0.21 and 6.17 ± 0.48, EC of 310.46 ± 50.72 µS/cm and 348.31 ± 33.51 µS/cm, temperature of 29.14 ± 0.19°C and 28.67 ± 1.12°C, CEC of 50.55 ± 6.28 mg/kg and 50.73 ± 6.77 mg/kg, moisture content of 20.28 ± 2.30% and 18.99 ± 1.68%, soil organic matter 4.41 ± 0.68% and 4.14 ± 0.91%, at depth 5 and 10 cm respectively. Mean concentrations of Ca, K, Na and Mg were 25.53 mg/kg, 6.57 mg/kg, 9.69 mg/kg and 8.81 mg/kg, respectively, at depth 5 cm while at 10 cm, the concentrations were 27.70 mg/kg, 4.07 mg/kg, 2.73 mg/kg and 6.21 mg/kg, respectively, while Cu, Zn, Mn, Cr, Fe and Pb were generally low in the soil. At both depths, the distribution of the parameters generally followed a similar pattern and showed no significant difference (p > 0.05 except Mn). Results obtained were further modelled for pollution (using contamination factor, pollution load index, geo-accumulation index, ecological risk), fertility (using sodium absorption ratio, cation ratio of structural stability and nutrient index) and quality (using soil quality index) assessment which showed that soil is yet to be contaminated, with good structure (SAR and CROSS were <13), low nutrient (NI< 1.67) and with good overall quality (SQI> 0.5), though, the area is faced with intense pollution. Further study should be conducted to determine if the widespread presence of Canna generalis in the area is mitigating the soil from contamination.