J 2019

Chemical (C, N, S, black carbon, soot and char) and stable carbon isotope composition of street dusts from a major West African metropolis: Implications for source apportionment and exposure

BANDOWE, Benjamin A. Musa, Marian Asantewah NKANSAH, Sophia LEIMER, Daniela FISCHER, Gerhard LAMMEL et. al.

Základní údaje

Originální název

Chemical (C, N, S, black carbon, soot and char) and stable carbon isotope composition of street dusts from a major West African metropolis: Implications for source apportionment and exposure

Autoři

BANDOWE, Benjamin A. Musa (276 Německo), Marian Asantewah NKANSAH (288 Ghana), Sophia LEIMER (276 Německo), Daniela FISCHER (756 Švýcarsko), Gerhard LAMMEL (276 Německo, garant, domácí) a Yongming HAN (156 Čína)

Vydání

Science of the Total Environment, Amsterdam, Elsevier Science, 2019, 0048-9697

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 6.551

Kód RIV

RIV/00216224:14310/19:00109134

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000455034600142

Klíčová slova anglicky

Carbon; Nitrogen; Sulphur; Urban pollution; Polycyclic aromatic compounds

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 16. 3. 2020 13:35, Mgr. Marie Šípková, DiS.

Anotace

V originále

Street dust is a major source of pollution and exposure of residents of West Africa to toxic chemicals. There is however, limited knowledge about the chemical composition and sources of street dust in urban areas of sub-Saharan Africa. The total carbon (TC), nitrogen (TN), sulfur (TS) and the stable carbon isotope ratios (delta C-13) contents of street dust sampled from 25 sites distributed across Kumasi (a metropolis in Ghana with a population of ca.2 million) were determined. In addition, black carbon (BC) and their subunits (soot and char) in these samples were also determined. The concentrations of TC, TN and TS in the dusts were 5-71 mg g(-1), 0.3-4.3 mg g(-1) and 0.2-1.4 mg g(-1), respectively. The concentrations of TC, TN and TS were higher than at the background site of the metropolis by a factor of 5.1 (range: 1.7-12), 3.9 (1.1-13) and 2.8 (0.7-5), respectively. The BC, char and soot concentrations in these samples averaged 1.6 mg g(-1) (0.13-4.4), 1.2 mg g(-1) (0.08-3.7) and 0.36 mg g(-1) (0.05-1.5), respectively. The concentrations of BC, char and soot in the street dust were higher than in the background location by factors of 5 (range: 0.8-13), 6 (0.7-17) and 3 (0.5-12), respectively. The TC, TN, TS, BC, soot and char concentrations were positively correlated with each other and with polycyclic aromatic compounds (PAHs, oxygenated PAHs and azaarenes from a previous study), indicating their common origin and fate. The delta C-13 values ranged from -27 to -24 [parts per thousand], with more polluted sites being more depleted in C-13. Based on the chemical composition of the street dusts, the 25 sites could be clustered into four groups by hierarchical cluster analysis which reflect areas of varying anthropogenic influence and, accordingly, exposure to hazardous chemicals.