Table 3.

Showing the concentration of 2-hydroxyterephthalate (HTA), ^●OH and H₂O₂ after sonication times of 5, 10, and 20 min.

Time [minutes]	Dual frequencies (20 and 80 kHz), acoustic power density (209.63 ± 6.94 W/L)			Dual frequencies (20 and 37 kHz), acoustic power density (272.08 ± 3.92 W/L)
	Concentration			Concentration
	HTA [µM]	●OH [nM]	H2O2 [µM]	HTA [µM]	●OH [nM]	H2O2 [µM]
5	1.50	37.59	17.22	1.84	46.02	23.37
10	3.14	78.51	32.06	2.97	74.15	35.80
20	6.01	150.29	61.89	5.40	135.12	56.73