| Serial No. | Vanadium/µg∙kg−1 | Sample Sourcesc | ||
| AAS (n = 5) | Proposed method (n = 5) | RSDb (%) | ||
| S1 | 52.0 | 51.8 | 1.5 | Esturine soil (Sediment) (River Karnaphully Chittagong) |
| S2 | 20.0 | 19.8 | 1.0 | Marine soil (Bay of Bengal) |
| S3 | 36.0 | 35.8 | 1.2 | Clevendon Tea Estate (Moulabi Bazar, Sylhet) |
| S4 | 13.0 | 12.5 | 1.0 | Agricultural soil (Chittagong university campuse) |
| S5 | 46.5 | 45.6 | 1.5 | Industrial soil (Berger paint) |
| S6 | 160.0 | 157.5 | 1.8 | Industrial soil (Eastern Refineries) |
| S7 | 58.0 | 56.8 | 1.6 | Industrial sol (Eastern Cable) |
| S8 | 67.0 | 65.5 | 1.8 | Industrial soil (PHP glass) |
| S9 | 32.5 | 31.8 | 1.2 | Industrial soil (Ship-breaking area) |
| S10 | 57.0 | 1.5 | 1.5 | Industrial soil (BSRM Steel Mill) |