Local and regional sources of organochlorine pesticides in a rural zone in central Chile

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00126194" target="_blank" >RIV/00216224:14310/22:00126194 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S1309104222000976?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S1309104222000976?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apr.2022.101411" target="_blank" >10.1016/j.apr.2022.101411</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Local and regional sources of organochlorine pesticides in a rural zone in central Chile

Popis výsledku v původním jazyce

There is a lack of knowledge about exposure to airborne organochlorinated pesticides (OCPs), especially for people living near agricultural zones in developing countries. This study is the first one to measure spatiotemporal variation of airborne OCPs within a major agriculture area in Central Chile. Polyurethane foam passive air samplers (PUF-PAS) were deployed in five sites in the town of Molina (35 degrees 7'S, 71 degrees 17'W) and another one in the nearby town of Lontue (35 degrees 3'S, 71 degrees 17'W). Samplers were deployed from August 2016 to January 2018, in 8 periods lasting 2-3 months each. The measured concentrations in air (pg m(-3)) as geometric mean were alpha-HCH: 0.59, gamma-HCH: 3.8, o,p LDDT: 1.3, p,p'-DDT: 2.0, o,p'-DDE: 0.52, p,p '-DDE: 5.5, o,p'-DDD: 0.26, p,p'-DDD: 0.64, PeCB: 29.1 and HCB: 14.5. The highest concentrations were measured in the warmer months and negative correlations (p &lt; 0.05) between the log of the concentrations and the inverse of ambient temperature were found, suggesting soil volatilization as the main release process. The exceptions were o,p'-DDE, p,p '-DDE and HCB. In the case of HCB, waste burning was a likely source. Most OCP concentrations showed significant spatial heterogeneity (p &lt; 0.05), suggesting local source contributions are dominant; the exceptions are alpha-HCH and PeCB (p &gt; 0.05) whose concentrations depend on regional sources. Backward wind trajectories obtained using NOAA's HYSPLIT identified air masses coming from the south and southwest when ambient concentrations are highest; these regional sources contribute to all ambient OCP concentrations.

Název v anglickém jazyce

Local and regional sources of organochlorine pesticides in a rural zone in central Chile

Popis výsledku anglicky

There is a lack of knowledge about exposure to airborne organochlorinated pesticides (OCPs), especially for people living near agricultural zones in developing countries. This study is the first one to measure spatiotemporal variation of airborne OCPs within a major agriculture area in Central Chile. Polyurethane foam passive air samplers (PUF-PAS) were deployed in five sites in the town of Molina (35 degrees 7'S, 71 degrees 17'W) and another one in the nearby town of Lontue (35 degrees 3'S, 71 degrees 17'W). Samplers were deployed from August 2016 to January 2018, in 8 periods lasting 2-3 months each. The measured concentrations in air (pg m(-3)) as geometric mean were alpha-HCH: 0.59, gamma-HCH: 3.8, o,p LDDT: 1.3, p,p'-DDT: 2.0, o,p'-DDE: 0.52, p,p '-DDE: 5.5, o,p'-DDD: 0.26, p,p'-DDD: 0.64, PeCB: 29.1 and HCB: 14.5. The highest concentrations were measured in the warmer months and negative correlations (p &lt; 0.05) between the log of the concentrations and the inverse of ambient temperature were found, suggesting soil volatilization as the main release process. The exceptions were o,p'-DDE, p,p '-DDE and HCB. In the case of HCB, waste burning was a likely source. Most OCP concentrations showed significant spatial heterogeneity (p &lt; 0.05), suggesting local source contributions are dominant; the exceptions are alpha-HCH and PeCB (p &gt; 0.05) whose concentrations depend on regional sources. Backward wind trajectories obtained using NOAA's HYSPLIT identified air masses coming from the south and southwest when ambient concentrations are highest; these regional sources contribute to all ambient OCP concentrations.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Atmospheric Pollution Research

ISSN

1309-1042

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

TR - Turecká republika

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000788797900003

EID výsledku v databázi Scopus

2-s2.0-85129429647