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Heavy Metal Contamination in Agricultural Soils and Its Impact on Centella asiatica Plants |
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| รหัสดีโอไอ | |
| Creator | Chuleemas Boonthai Iwai |
| Title | Heavy Metal Contamination in Agricultural Soils and Its Impact on Centella asiatica Plants |
| Contributor | Yoseph Junedi Nuwa Dhuge Poa, Nuttira Kleawklaharn, Jarupong Prasopsuk, Chuleemas Boonthai Iwai |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2568 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 18 |
| Journal No. | 3 |
| Page no. | 15-26 |
| Keyword | Soil pollution, Herbal plant, Heavy metal, Fertilizer |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | Using nitrogen and phosphorous fertilizers has raised significant concerns regardingheavy metal residues in soil, which may contaminate agricultural crops. This issue is particularlycritical for medicinal plants, where safety standards require minimal contaminant residues.This research aimed to investigate the distribution of heavy metals in agricultural lands acrossNortheast Thailand, a region that has been subjected to routine fertilizer application, and toassess the accumulation of these metals in Centella asiatica, a medicinal plant commonly usedin herbal products. Soil samples were collected from agricultural areas and compared to controlsoil samples from an uncultivated area that had no history of fertilizer application. Randomsampling was employed, with three samples selected for analysis. The samples were digestedusing the USEPA Acid Digestion method and elemental composition was analyzed with anICP-OES instrument. Manganese (Mn) was found to be the most prevalent heavy metal inagricultural soil, with a concentration of 44.60 mg/kg, followed by zinc (Zn) at 43.13 mg/kg,copper (Cu) at 39.87 mg/kg, lead (Pb) at 14.40 mg/kg, nickel (Ni) at 8.53 mg/kg, and arsenic(As) at 2.40 mg/kg. Furthermore, the accumulation of heavy metals in Centella asiatica wasindicated by elevated nickel levels that exceed the established quality standard, measuring 3.73mg/kg. Although the heavy metal contamination in the soil samples evaluated in this study didnot exceed safety standard levels, the long-term impact of chemical fertilizers on agriculturalsoil is concerning. Ensuring food safety and protection from soil contamination is crucial,especially for the cultivation of medicinal herbs. |
