Halogenated flame retardants in atmospheric particles from a North African coastal city (Bizerte, Tunisia): Pollution characteristics and human exposure

Hence, this study reports for the first time the occurrence and potential impact of HBCDDs, NHFRsand MeO-BDEs in atmospheric particles from North Africa.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:In the present study, atmospheric particle samples were collected between September 2015 and February 2016from Bizerte city (Tunisia) to investigate the occurrence, potential sources and impacts of a range of flameretardants (FRs), including hexabromocyclododecane diastereoisomers (HBCDDs), new halogenated flame retardants (NHFRs), as well as methoxylated polybrominated diphenyl ethers (MeO-BDEs).

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Temel Bulgular & Veri:Among 19 examinedcompounds, 9 congeners (α-HBCDD, β-HBCDD, γ-HBCDD, HBB, DBDPE, syn-DP, anti-DP, 2′-MeO-BDE-68 and 6-MeO-BDE-47) were detected in atmospheric particles at different levels and frequencies.

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Sonuç & Katkı:Hence, this study reports for the first time the occurrence and potential impact of HBCDDs, NHFRsand MeO-BDEs in atmospheric particles from North Africa.

🔬Tür:Araştırma Makalesi

📍Kapsam:2015 Verileri

⚙️Değişkenler:Alan Parametreleri

Özet

In the present study, atmospheric particle samples were collected between September 2015 and February 2016from Bizerte city (Tunisia) to investigate the occurrence, potential sources and impacts of a range of flameretardants (FRs), including hexabromocyclododecane diastereoisomers (HBCDDs), new halogenated flame retardants (NHFRs), as well as methoxylated polybrominated diphenyl ethers (MeO-BDEs). Among 19 examinedcompounds, 9 congeners (α-HBCDD, β-HBCDD, γ-HBCDD, HBB, DBDPE, syn-DP, anti-DP, 2′-MeO-BDE-68 and 6-MeO-BDE-47) were detected in atmospheric particles at different levels and frequencies. Overall, the averageconcentration of NHFRs (1.53 pg m−3) was 1.5 and 51 folds higher than that of HBCDDs (1.04 pg m−3) andMeO-BDEs (0.03 pg m−3), respectively. By comparison with other areas of the world, NHFRs and HBCDDs inBizerte were at medium pollution level, while MeO-BDEs were at lower levels. No significant correlations werefound between NHFR, HBCDD and MeO-BDE concentrations, suggesting different sources related on one hand tothe biogenic origin of MeO-BDE, and on the other hand to various types and utilisations of imported NHFR- andHBCDD-containing products, as Tunisia does not manufacture FRs. DP and HBCDD diastereoisomer profilesappeared to be divergent from their commercial products, pointing out that a complex degradation or stereoselective transformation processes occurring in ambient air around Bizerte city. The estimated daily humanexposure dose (DED) to particle-bound HBCDDs, NHFRs and MeO-BDEs via outdoor air inhalation was generallyat low levels. Hence, this study reports for the first time the occurrence and potential impact of HBCDDs, NHFRsand MeO-BDEs in atmospheric particles from North Africa.

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Bu Makaleye Atıf Yap

BARHOUMI, B., TEDETTI, M., PERIS, A., GUIGUE, C., AZNAR-ALEMANY, O., TOUIL, S., DRISS, M. R., ELIJARRAT, E. (2020). Halogenated flame retardants in atmospheric particles from a North African coastal city (Bizerte, Tunisia): Pollution characteristics and human exposure. Atmospheric Pollution Research, Cilt: 11 - Sayı: 4, 831–840. https://ajindex.com/articles/351301

Kaynakça (9)

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