# Simultaneous quantitative analysis of four metal elements in oily sludge by laser induced breakdown spectroscopy coupled with wavelet transform-random forest (WT-RF)

> Research article (Chemometrics and Intelligent Laboratory Systems, 2019) · cited 18× · AI/ML

**Wikidata**: [openalex:W2973876298](https://www.wikidata.org/wiki/openalex:W2973876298)  
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