Fig. 1.

The contents of the target compounds in the exposure medium at each time point within 72 h after DQ, DQ-M, and DQ-D violation (change half of the exposure solution every 24 h). (A) The exposure concentration of 10^− 7 M DQ, DQ-M, and DQ-D exposure solution. (B) The exposure concentration of 10^− 6 M DQ, DQ-M, and DQ-D exposure solution. (C) The exposure concentration of 10^− 5 M DQ, DQ-M, and DQ-D exposure solution. Results were shown as mean ± standard deviation (SD) of at least three independent experiments (N = 9 samples).