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Characteristic accumulation of PCDD/Fs in pine needles near an MSWI and emission levels of the MSWI in Pearl River Delta: A case study.
Chemosphere. 2017 Aug; 181:360-367.C

Abstract

Pine needle samples were collected near a municipal solid waste incinerator (MSWI) in Pearl River Delta, southern China, as well as the stack gas and dust samples of the MSWI were simultaneously collected. Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) were analyzed following the USEPA Method 1613B. The concentration of PCDD/Fs in the pine needles (137-625 ng/kg, 25-51 ng I-TEQ/kg) is the highest level ever detected in China. Congener profile comparison and principal component analysis (PCA) confirmed the MSWI as an important emission source of environmental PCDD/Fs. The PCDD/Fs in the pine needles mainly depended on the atmospheric concentration, exposure time and also the wind direction. The accumulation of PCDD/Fs in this species did not occur at a steady rate, and the total concentrations covered up the actual photolysis information. Gas-phase partitioning of compounds in the atmosphere was the dominant process through which PCDD/Fs were adsorbed onto the pine needle surface in contrast with particle-phase deposition, and subsequent environmental behavior varied between the congeners. Photo-degradation was the major transformation process as PCDD/Fs were adsorbed onto the pine needle surfaces. Higher chlorinated PCDD/Fs were more recalcitrant to photo-degradation than those that were less chlorinated, and PCDDs were more resistant to photo-degradation than PCDFs. On the other hand, the strong ability of lipid-rich pine needles to accumulate dioxin compounds indicates they can be used as the absorption sink of PCDD/Fs in heavily polluted areas because it is easier to dispose of pine needles than it is to clean contaminated air.

Authors+Show Affiliations

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. Electronic address: pchen@gig.ac.cn.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28456038

Citation

Chen, Pei, et al. "Characteristic Accumulation of PCDD/Fs in Pine Needles Near an MSWI and Emission Levels of the MSWI in Pearl River Delta: a Case Study." Chemosphere, vol. 181, 2017, pp. 360-367.
Chen P, Xiao X, Mei J, et al. Characteristic accumulation of PCDD/Fs in pine needles near an MSWI and emission levels of the MSWI in Pearl River Delta: A case study. Chemosphere. 2017;181:360-367.
Chen, P., Xiao, X., Mei, J., Cai, Y., Tang, Y., & Peng, P. (2017). Characteristic accumulation of PCDD/Fs in pine needles near an MSWI and emission levels of the MSWI in Pearl River Delta: A case study. Chemosphere, 181, 360-367. https://doi.org/10.1016/j.chemosphere.2017.04.098
Chen P, et al. Characteristic Accumulation of PCDD/Fs in Pine Needles Near an MSWI and Emission Levels of the MSWI in Pearl River Delta: a Case Study. Chemosphere. 2017;181:360-367. PubMed PMID: 28456038.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristic accumulation of PCDD/Fs in pine needles near an MSWI and emission levels of the MSWI in Pearl River Delta: A case study. AU - Chen,Pei, AU - Xiao,Xiao, AU - Mei,Jun, AU - Cai,Ying, AU - Tang,Yuhui, AU - Peng,Ping'an, Y1 - 2017/04/22/ PY - 2016/11/23/received PY - 2017/04/04/revised PY - 2017/04/21/accepted PY - 2017/4/30/pubmed PY - 2017/8/3/medline PY - 2017/4/30/entrez KW - Dust KW - MSWI KW - PCDD/Fs KW - Photo-degradation KW - Pine needle KW - Stack gas SP - 360 EP - 367 JF - Chemosphere JO - Chemosphere VL - 181 N2 - Pine needle samples were collected near a municipal solid waste incinerator (MSWI) in Pearl River Delta, southern China, as well as the stack gas and dust samples of the MSWI were simultaneously collected. Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) were analyzed following the USEPA Method 1613B. The concentration of PCDD/Fs in the pine needles (137-625 ng/kg, 25-51 ng I-TEQ/kg) is the highest level ever detected in China. Congener profile comparison and principal component analysis (PCA) confirmed the MSWI as an important emission source of environmental PCDD/Fs. The PCDD/Fs in the pine needles mainly depended on the atmospheric concentration, exposure time and also the wind direction. The accumulation of PCDD/Fs in this species did not occur at a steady rate, and the total concentrations covered up the actual photolysis information. Gas-phase partitioning of compounds in the atmosphere was the dominant process through which PCDD/Fs were adsorbed onto the pine needle surface in contrast with particle-phase deposition, and subsequent environmental behavior varied between the congeners. Photo-degradation was the major transformation process as PCDD/Fs were adsorbed onto the pine needle surfaces. Higher chlorinated PCDD/Fs were more recalcitrant to photo-degradation than those that were less chlorinated, and PCDDs were more resistant to photo-degradation than PCDFs. On the other hand, the strong ability of lipid-rich pine needles to accumulate dioxin compounds indicates they can be used as the absorption sink of PCDD/Fs in heavily polluted areas because it is easier to dispose of pine needles than it is to clean contaminated air. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/28456038/Characteristic_accumulation_of_PCDD/Fs_in_pine_needles_near_an_MSWI_and_emission_levels_of_the_MSWI_in_Pearl_River_Delta:_A_case_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)30635-5 DB - PRIME DP - Unbound Medicine ER -