从以上数据可以看出，当初始浓度低于200mg/L时反应后的溶液中几乎不

It can be seen from the above data that when the initial concentration is less than 200mg/L, the solution after the reaction contains almost no tetracycline, but when the initial concentration reaches 200mg/L and above 200mg/L, the degraded solution still contains traces of tetracycline. .

From the above data, it can be seen that when the initial concentration is lower than 200 mg/L, the reaction solution contains almost no tectonthione, but when the initial concentration reaches 200 mg/L and 200 mg/L or more, the degraded solution still contains trace amounts of tectonol.

It can be seen from the above data that when the initial concentration is lower than 200mg / L, there is almost no tetracycline in the solution after the reaction, but when the initial concentration reaches 200mg / L and above 200mg / L, there is still a trace of tetracycline in the solution after the degradation.<br>