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Techniques, such as Diffusive Gradients in Thin-films (DGT), which either minimally disturb the soil or perturb it in a controlled way are most likely to provide information relevant to toxicity. Herein, we report the first use of DGT for organics (o-DGT) in soil systems to gain insight into the mobility and lability of four antibiotics—sulfamethoxazole (SMX), sulfamethazine (SMZ), and sulfadimethoxine...
A simple and sensitive kinetic-spectrofluorimetric method is described for the determination of iridium(IV) and the possible mechanism of catalytic reaction is proposed. The method is based on the fluorescent quenching reaction of salicylaldehyde p-nitro-benzoylhydrazone (SAP-NBH) with potassium periodate, inhibited by Ir(IV) in a water-ethanol (7.3+2.7, v/v) medium at pH 10.70 and 55 o C...
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