Herbal assessment: Metal stats - Ezine - spectroscopyNOW.com - A statistical analysis of the elemental content of 23 commercial herbal medicines reveals how effective chemometric tools can be in studying such products. Researchers have evaluated a range of common herbal remedies using multivariate analysis - specifically principal component analysis (PCA) and hierarchical cluster analysis (HCA) - to uncover any relationships that might exist between various metallic elements in these products.(10.1016/j.foodchem.2012.07.040)

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