# Development of a soil heavy metal estimation method based on a spectral index: Combining fractional-order derivative pretreatment and the absorption mechanism

> Research article (The Science of The Total Environment, 2021) · cited 89× · AI/ML

**Wikidata**: [openalex:W3214805834](https://www.wikidata.org/wiki/openalex:W3214805834)  
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