According to the biplot, all the vegetable treatments were highly significantly positively correlated with each other, especially WW, which was more strongly correlated with CW and TW, indicating an increasing trend of Zn in the soil, whereas in vegetables, both CW and TW were not significantly correlated with one another but were highly significantly positively correlated with WW.
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Long term urban wastewater irrigation drives zinc bioaccumulation and health risks in contaminated vegetables.
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