Sources and risk evaluation of polybrominated diphenyl ethers in dust and soil from an urban environment in Nigeria

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00141570" target="_blank" >RIV/00216224:14310/25:00141570 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.publish.csiro.au/EN/EN25007" target="_blank" >https://www.publish.csiro.au/EN/EN25007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1071/EN25007" target="_blank" >10.1071/EN25007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sources and risk evaluation of polybrominated diphenyl ethers in dust and soil from an urban environment in Nigeria

Popis výsledku v původním jazyce

Environmental context Polybrominated diphenyl ethers (PBDEs) are compounds that have previously been widely applied in many consumer and commercial products; their use is banned because of their toxicity but they remain a legacy environmental pollutant. This study provides concentrations of PBDEs in indoor and outdoor dust and soils. Relationships between their occurrence patterns and origins are established, which informs our understanding of threats to human health from soil and air exposure.Rationale The concentrations of 39 polybrominated diphenyl ether (PBDE) congeners were determined in soil and dust samples of a typical Nigerian city in order to evaluate the spatial patterns, sources, and ecosystem and human health risks. The findings afford the necessary data to evaluate the temporal status, determine compliance with globally banned persistent organic pollutants, and provide guidance for designing strategies for surveillance, source control, risk reduction and management of environmental quality.Methodology Samples of soil and dust (indoor and outdoor) were obtained from 20 sites within the city. The soil and dust samples were subjected to Soxhlet extraction with an acetone/DCM/n-hexane mixture and cleaned up. The PBDEs in the extracts were separated and quantified by gas chromatography-mass spectrometry.Results The Sigma 39 PBDE concentrations of these samples varied between 1.69 and 590 ng g-1 for soil, whereas those of indoor and outdoor dust ranged from 0.45 to 112 and 0.54 to 60.4 ng g-1 respectively.Discussion Despite PBDEs being primarily indoor pollutants, their concentrations in soils exceeded those detected in indoor and outdoor dust, which may be attributed to soil's higher sorption capacity and anthropogenic activities. The composition patterns in these media showed dominance of penta-BDEs, and exposure to these penta-BDEs has potential ecological consequences. The occurrence patterns and potential sources of PBDEs in soil and dust were evaluated using principal component analysis (PCA) and hierarchical cluster analysis (HCA). The behaviours and sources of PBDEs in soil and outdoor dust were similar, but differ from those of indoor dust. The use of the penta-BDE technical formulation is the likely source of PBDEs in these matrices. Exposure to PBDEs in soils and dust from this area poses no serious health risk but could pose an ecological risk. Despite the low concentrations of PBDEs in these media, there is a need for continued surveillance and the implementation of regulatory frameworks for the control of these persistent pollutants.

Název v anglickém jazyce

Sources and risk evaluation of polybrominated diphenyl ethers in dust and soil from an urban environment in Nigeria

Popis výsledku anglicky

Environmental context Polybrominated diphenyl ethers (PBDEs) are compounds that have previously been widely applied in many consumer and commercial products; their use is banned because of their toxicity but they remain a legacy environmental pollutant. This study provides concentrations of PBDEs in indoor and outdoor dust and soils. Relationships between their occurrence patterns and origins are established, which informs our understanding of threats to human health from soil and air exposure.Rationale The concentrations of 39 polybrominated diphenyl ether (PBDE) congeners were determined in soil and dust samples of a typical Nigerian city in order to evaluate the spatial patterns, sources, and ecosystem and human health risks. The findings afford the necessary data to evaluate the temporal status, determine compliance with globally banned persistent organic pollutants, and provide guidance for designing strategies for surveillance, source control, risk reduction and management of environmental quality.Methodology Samples of soil and dust (indoor and outdoor) were obtained from 20 sites within the city. The soil and dust samples were subjected to Soxhlet extraction with an acetone/DCM/n-hexane mixture and cleaned up. The PBDEs in the extracts were separated and quantified by gas chromatography-mass spectrometry.Results The Sigma 39 PBDE concentrations of these samples varied between 1.69 and 590 ng g-1 for soil, whereas those of indoor and outdoor dust ranged from 0.45 to 112 and 0.54 to 60.4 ng g-1 respectively.Discussion Despite PBDEs being primarily indoor pollutants, their concentrations in soils exceeded those detected in indoor and outdoor dust, which may be attributed to soil's higher sorption capacity and anthropogenic activities. The composition patterns in these media showed dominance of penta-BDEs, and exposure to these penta-BDEs has potential ecological consequences. The occurrence patterns and potential sources of PBDEs in soil and dust were evaluated using principal component analysis (PCA) and hierarchical cluster analysis (HCA). The behaviours and sources of PBDEs in soil and outdoor dust were similar, but differ from those of indoor dust. The use of the penta-BDE technical formulation is the likely source of PBDEs in these matrices. Exposure to PBDEs in soils and dust from this area poses no serious health risk but could pose an ecological risk. Despite the low concentrations of PBDEs in these media, there is a need for continued surveillance and the implementation of regulatory frameworks for the control of these persistent pollutants.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Chemistry

ISSN

1448-2517

e-ISSN

1449-8979

Svazek periodika

22

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

AU - Austrálie

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

001509941600001

EID výsledku v databázi Scopus

2-s2.0-105016572104