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The partial least squares(PLS) method was employed to establish a quantitative ion characteristics-activity relationship(QICAR) model for metal ion toxicity(EC50 of 15 metal ions). The ion characteristics included AN(the atomic number), ΔIP(the change in ionization potential, eV), Xm(the electronegativity, eV), AW(the atomic weight), Xm2r(the covalent index), ΔE0(the absolute difference between...
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