Fig. 2

Comparison of mixture toxicity between Zn²⁺–chemicals with nZnO–chemicals. a Zn²⁺–chemicals and nZnO–chemicals at equitoxic ratios. B in acute test, b Zn²⁺–SMZ and nZnO–SMZ at non-equitoxic ratios in acute test, c Zn²⁺–AL and nZnO–AL at non-equitoxic ratios in acute test, d Zn²⁺–chemicals and nZnO–chemicals at equitoxic ratios in chronic test, e Zn²⁺–SMZ and nZnO–SMZ at non-equitoxic ratios in chronic test, f Zn²⁺–AL and nZnO–AL at non-equitoxic ratios in chronic test