Both DPBF and ABDA could be used to probe singlet oxygen. But I am not sure wether the two prober could be used to detect intracellular singlet oxygen or not. Could someone share me some references?
If you perform a control then you can use them intracellular probs. Papers are there with dpbf as intracellular diagnostic tool. (But its compulsory you should perform a blank or control, ie without the singlet oxygen producing compound.)