Ozonation transformation products (OTPs) are largely unknown compounds that are formed during the ozonation of micropollutants, and it is uncertain to which extent these compounds can be removed by subsequent adsorption to activated carbon. Thus, ¹⁴C-labeled micropollutants were ozonated to generate ¹⁴C-labeled OTPs, for which the adsorption of the sum of all ¹⁴C-labeled OTPs to activated carbon could be determined, based on the adsorption of the labeled carbon. Further, ¹⁴CO₂ traps were used to examine the mineralization of ¹⁴C-labeled moieties during ozonation. ¹⁴CO₂-formation revealed a partial mineralization of the ¹⁴C-labeled moieties in all compounds except for propyl-labeled bisphenol A and O-methyl-labeled naproxen. A similar degree of mineralization was noted for different compounds labeled at the same moiety, including the carboxylic carbon in diclofenac and ibuprofen (∼40% at 1 g O₃/g DOC) and the aniline ring in sulfamethoxazole and sulfadiazine (∼30% at 1 g O₃/g DOC). Aromatic ring cleavage was also confirmed for bisphenol A, sulfamethoxazole, and sulfadiazine through the formation of ¹⁴CO₂. The adsorption experiments demonstrated increased adsorption of micropollutants to powdered activated carbon after ozonation, which was connected to a decreased adsorption of dissolved organic matter (DOM). Conversely, the OTPs showed a substantial and successive decline in adsorption at increased ozone doses for all compounds, likely due to decreased hydrophobicity and aromaticity of the OTPs. These findings indicate that adsorption to activated carbon alone is not a viable removal method for a wide range of ozonation transformation products.

臭氧化转化产物 (OTP) 是在微污染物臭氧化过程中形成的大部分未知化合物，并且不确定这些化合物可以通过随后吸附到活性炭上的程度去除。因此，¹⁴ C 标记的微污染物被臭氧化以产生¹⁴ C 标记的 OTP ，基于标记碳的吸附，可以确定所有^{14 C 标记的 OTP 总和对活性炭的吸附。}此外，使用^{14 个}CO ₂捕集器来检查臭氧化过程中¹⁴ C 标记部分的矿化。¹⁴ CO ₂的形成揭示了部分矿化除丙基标记的双酚 A 和 O-甲基标记的萘普生外，所有化合物中的^{14 C 标记部分。}对于标记在同一部分的不同化合物，注意到相似程度的矿化，包括双氯芬酸和布洛芬中的羧基碳（在 1 g O ₃ /g DOC 时约为 40%）和磺胺甲恶唑和磺胺嘧啶中的苯胺环（在1 g O ₃ /g DOC)。^{通过形成14} CO ₂也证实了双酚 A、磺胺甲恶唑和磺胺嘧啶的芳环裂解. 吸附实验表明，臭氧化后微污染物对粉末状活性炭的吸附增加，这与溶解有机物 (DOM) 的吸附减少有关。相反，OTPs 在所有化合物的臭氧剂量增加时显示出显着且连续的吸附下降，这可能是由于 OTPs 的疏水性和芳香性降低。这些发现表明，仅吸附到活性炭上对于广泛的臭氧化转化产物来说不是一种可行的去除方法。