Details

Autor(en) / Beteiligte

• Vaezzadeh, Vahab
• Zhong, Guangcai
• Gligorovski, Sasho
• Wang, Yiqun
• Zhang, Gan

Titel

Characteristics of dissolved black carbon in riverine surface microlayer

Ist Teil von

• Marine pollution bulletin, 2023-09, Vol.194 (Pt B), p.115301-115301, Article 115301

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Black carbon (BC) is produced by the incomplete combustion of biomass and fossil fuels. The dissolved form of BC (DBC), which is transported through rivers into the oceans, is of great significance for the carbon cycling on the planet due to its refractory features. However, the characteristics and sources of DBC in riverine water are poorly constrained. Here, we analyzed DBC contents and stable carbon isotope (δ13C) signatures in surface microlayer (SML) from the upper, middle and lower reaches of Pearl River (PR) in the first study of its kind. The DBC contents (100.9 to 166.6 μg L−1) in SML were lower than the global average for riverine water following a trend of upper > middle > lower reaches in PR. The molecular markers of DBC (BPCAs) and their δ13C values showed no statistical differences between the sampling sites (p > 0.05), suggesting biomass burning as the dominant source. •Dissolved black carbon was studied in surface microlayer from Pearl River, China.•The average concentration of dissolved black carbon was lower than global rivers.•Dissolved black carbon compositional patterns were similar in the study area.•Compound specific δ13C values demonstrated C3 plant combustion as the main source.