Role of the sedimentary organic matter structure and microporosity on the degradation of nonylphenol by potassium ferrate

Effect of organic carbon structures on the degradation of nonylphenol by hydrogen peroxide in sediment–water system

“…Seven surface sediments were obtained from the Pearl River (BET and HPG), estuary (GSD), continental shelf (S11 and S21), and South China Sea (M9 and M10) in 2017 (Figure S1; Zhang et al., 2022). The water depths of the seven sediments, ranging from 3 to 3138 m, increased gradually with distance from the Pearl River.…”

“…The water depths of the seven sediments, ranging from 3 to 3138 m, increased gradually with distance from the Pearl River. The 14 C‐NP or NP spiking based on aging methods was presented in a previous report (Zhang et al., 2022). The concentration of 14 C‐NP was 0.03 μg/g (approximately 20,000 DPM/g), and the concentration of nonlabeled NP was 25 μg/g based on a dry weight in sediment (Fan et al., 2021).…”

“…Degradation experiments were performed in a 40‐mL glass vial based on our previous studies (Zhang et al., 2022). The experimental procedure for degradation is shown in Figure S2.…”

“…The structures of the DM and ROC fractions were characterized using a solid‐state NMR instrument (Bruker Avance III 400) with cross‐polarization/total sideband suppression (CP/TOSS; Zhang et al., 2022). To obtain quantitative structural information regarding the nonprotonated carbons and mobile segments, CP/TOSS combined with dipolar dephasing (CP/TOSS/DD) techniques were applied (Chu et al., 2019).…”

“…Amorphous SOM is relatively high in O–alkyl C and carboxyl C and is likely to consist of labile organic components such as carbohydrates, peptides, and fatty acids (Cuypers et al., 2002). The glassy domains consist of aged or highly condensed alkyl C and non‐protonated aromatic C (Arom C ─ C) and are highly resistant to microbiological degradation (Ran et al., 2009; Zhang et al., 2022). The aromaticity and aliphaticity of organic matter are positively correlated to HOC sorption (Han et al., 2014; Jin et al., 2018).…”