Assessment of physicochemical parameters and organochlorine pesticide residues in selected vegetable farmlands soil in Zamfara state, Nigeria

Abstract

In this study, physicochemical and organochlorine pesticide residues in soil were determined from selected vegetable farmland in Zamfara State, Nigeria. The QuEChERS, and GC-MS were used for sample preparation and organochlorine analysis, respectively. The results showed that the soil from farmland A has sand, clay, slit, pH, organic matter and electrical conductivity content of 28.80±0.164 %, 51.0±0.78%17.18±10.17%,6.45±0.082, 3.15±0.0098% and 45.00±26.46 (µS/cm), respectively,. The soil from farmland Brecorded sand, clay, slit pH organic matter and electrical conductivity content of 50.09±0.001%, 25.70±0.755%,19.01±0.861%, 6.39±0.156%, and 96.33±75.16µs/cm, respectively while 32.30±0.059%, 56.35±0.399%,13.6±0.56%, 6.29±0.734, 5.44±0.592% and 200.33±148.30 µs/cm for sand, clay, slit, pH, organic matter, and electrical conductivity respectively were values of parameters from the analysis of soil from farmland C. Seven organochlorine pesticide residues were found in farmland A. Endosulfan I and dieldrin are foundin farmland B while six organochlorine pesticide residues were determined in farmland C. Regular monitoring of pesticide residues in the study area is necessary for the prevention, control, and reduction of environmental pollution.