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Figure 2 | Chemistry Central Journal

Figure 2

From: Application of principal component analysis in the pollution assessment with heavy metals of vegetable food chain in the old mining areas

Figure 2

Biplot of PC1 and PC2 for soil data in PCA1-soil model. (FeS, MnS, ZnS, CuS, NiS, CdS and PbS are variables used in PCA1-soil model that symbolized total content of Fe, Mn, Zn, Cu, Ni, Cd and Pb in soil samples; R, M and Ref symbolized soils samples from contaminated respectively reference areas and numbers 1 to 9 attached to previous symbols refer to soils samples associated with vegetables species or edible part: 1 for parsley roots, 2 for carrot roots, 3 for onion bulbs, 4 for parsley leaf, 5 for carrot leaf, 6 for cabbage, 7 for lettuce, 8 for cucumber and 9 for green bean).

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BMC Chemistry

ISSN: 2661-801X

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