TY - JOUR
T1 - Photochemical degradation of persistent organic pollutants (PCDD/FS, PCBS, PBDES, DDTS and HCB) in hexane and fish oil
AU - Ortiz Almirall, X.
AU - Solà Yagüe, N.
AU - Gonzalez-Olmos, R.
AU - Díaz-Ferrero, J.
N1 - Funding Information:
The authors gratefully acknowledge financial support of Spanish Ministerio de Ciencia e Innovación (project EDYCAP, ref. AGL 2006-12235 ), as well as the Agència de Gestió d'Ajuts Universitaris i de Recerca (AGAUR) for the research group support ( SGR 2017 ).
Funding Information:
The authors gratefully acknowledge financial support of Spanish Ministerio de Ciencia e Innovaci?n (project EDYCAP, ref. AGL 2006-12235), as well as the Ag?ncia de Gesti? d'Ajuts Universitaris i de Recerca (AGAUR)for the research group support (SGR 2017).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/8
Y1 - 2022/8
N2 - This study has investigated the photochemical degradation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs) and some organochlorine pesticides, such as hexachlorobenzene (HCB) or dichloro-diphenyl-trichloroethane (DDT) in hexane under UV irradiation at 254 nm. All pollutants were completely degraded after 3.5 h of exposition to the UV light. Moreover, this technique was applied to remove persistent organic pollutants from fish oil, with eliminations of a 34% for PCDD/Fs, 53% for PCBs, 59% for HCB, 67% for PBDEs and 73% for DDTs after 12 h of exposition to the UV light (254 nm). Dioxin-like PCBs increased their concentration after the treatment, probably due to the dehalogenation of other more chlorinated congeners. The fatty acids analysis of the fish oil revealed that the most important ω-3 fatty acids –EPA and DHA-were degraded to 67 and 70% of their initial content respectively. For these reasons elimination of persistent organic pollutants with photochemical treatment has limited applications for oils with food-purposes. However, it still can be a useful technique for decontamination of industrial oils.
AB - This study has investigated the photochemical degradation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs) and some organochlorine pesticides, such as hexachlorobenzene (HCB) or dichloro-diphenyl-trichloroethane (DDT) in hexane under UV irradiation at 254 nm. All pollutants were completely degraded after 3.5 h of exposition to the UV light. Moreover, this technique was applied to remove persistent organic pollutants from fish oil, with eliminations of a 34% for PCDD/Fs, 53% for PCBs, 59% for HCB, 67% for PBDEs and 73% for DDTs after 12 h of exposition to the UV light (254 nm). Dioxin-like PCBs increased their concentration after the treatment, probably due to the dehalogenation of other more chlorinated congeners. The fatty acids analysis of the fish oil revealed that the most important ω-3 fatty acids –EPA and DHA-were degraded to 67 and 70% of their initial content respectively. For these reasons elimination of persistent organic pollutants with photochemical treatment has limited applications for oils with food-purposes. However, it still can be a useful technique for decontamination of industrial oils.
KW - Fish oil
KW - PBDEs
KW - PCBs
KW - PCDD/Fs
KW - Persistent organic pollutants
KW - Photodegradation
UR - http://www.scopus.com/inward/record.url?scp=85129268157&partnerID=8YFLogxK
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_univeritat_ramon_llull&SrcAuth=WosAPI&KeyUT=WOS:000798547700002&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/j.chemosphere.2022.134587
DO - 10.1016/j.chemosphere.2022.134587
M3 - Article
C2 - 35427665
AN - SCOPUS:85129268157
SN - 0045-6535
VL - 301
JO - Chemosphere
JF - Chemosphere
M1 - 134587
ER -
