Wood-degrading fungal origin of perylene in peatlands of southern Poland: A molecular and statistical approach

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS
J. Smolarek-Lach, E. Szram, K.J. Wójcicki, L. Marynowski
{"title":"Wood-degrading fungal origin of perylene in peatlands of southern Poland: A molecular and statistical approach","authors":"J. Smolarek-Lach,&nbsp;E. Szram,&nbsp;K.J. Wójcicki,&nbsp;L. Marynowski","doi":"10.1016/j.coal.2025.104685","DOIUrl":null,"url":null,"abstract":"<div><div>Perylene is a polycyclic aromatic hydrocarbon (PAH) whose origin remains enigmatic. It has been thought to be derived from hydrocarbons, however much uncertainty remains over whether it is natural or anthropogenic. In this study, a comprehensive study of peat was conducted in the Osobłoga and Kłodnica River Valleys of southern Poland. Here, we show a significant advance in our understanding of the source of perylene using a detailed analysis of macro and minor elements along with its correlation with other PAHs and biogenic compounds. Based on principal component analysis (PCA), a negative correlation between perylene and combustion-derived PAHs was demonstrated, suggesting different origins for these compounds. Diagnostic ratios, such as %Pe/∑PAH and %Pe/∑PAI above 10 %, and a Py/Pe ratio below 9, indicate that the perylene present in these peat samples is of natural origin, formed from terrestrial organic matter. Furthermore, perylene is associated with a dominance of long-chain <em>n</em>-alkanes, which exhibit a strong odd-over-even preference, further supporting its biogenic source. The analysis revealed a weak correlation between total organic carbon (TOC) and perylene content, indicating that perylene concentration does not directly depend on the overall organic carbon content in peat. In contrast, a strong correlation was observed between perylene and wood-type biogenic compounds, specifically periderm (correlation coefficient of 0.2) and wood (correlation coefficient of 0.3). This finding suggests that perylene formation is closely linked to woody biomass. The Conifer Wood Degradation Index (CWDI) was calculated for samples containing conifer wood phytoclasts, providing insights into the degradation processes affecting these components and their relation to perylene formation. Further molecular and statistical studies on Vistulian and Holocene peats in our study also confirm the hypothesis of a natural, specifically fungal, origin of perylene. A comprehensive analysis of peat deposits, combined with advances in molecular and statistical techniques, continues to elucidate on the complex biogeochemical processes that contribute to the presence of perylene in natural environments.</div></div>","PeriodicalId":13864,"journal":{"name":"International Journal of Coal Geology","volume":"299 ","pages":"Article 104685"},"PeriodicalIF":5.6000,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Coal Geology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0166516225000023","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

Abstract

Perylene is a polycyclic aromatic hydrocarbon (PAH) whose origin remains enigmatic. It has been thought to be derived from hydrocarbons, however much uncertainty remains over whether it is natural or anthropogenic. In this study, a comprehensive study of peat was conducted in the Osobłoga and Kłodnica River Valleys of southern Poland. Here, we show a significant advance in our understanding of the source of perylene using a detailed analysis of macro and minor elements along with its correlation with other PAHs and biogenic compounds. Based on principal component analysis (PCA), a negative correlation between perylene and combustion-derived PAHs was demonstrated, suggesting different origins for these compounds. Diagnostic ratios, such as %Pe/∑PAH and %Pe/∑PAI above 10 %, and a Py/Pe ratio below 9, indicate that the perylene present in these peat samples is of natural origin, formed from terrestrial organic matter. Furthermore, perylene is associated with a dominance of long-chain n-alkanes, which exhibit a strong odd-over-even preference, further supporting its biogenic source. The analysis revealed a weak correlation between total organic carbon (TOC) and perylene content, indicating that perylene concentration does not directly depend on the overall organic carbon content in peat. In contrast, a strong correlation was observed between perylene and wood-type biogenic compounds, specifically periderm (correlation coefficient of 0.2) and wood (correlation coefficient of 0.3). This finding suggests that perylene formation is closely linked to woody biomass. The Conifer Wood Degradation Index (CWDI) was calculated for samples containing conifer wood phytoclasts, providing insights into the degradation processes affecting these components and their relation to perylene formation. Further molecular and statistical studies on Vistulian and Holocene peats in our study also confirm the hypothesis of a natural, specifically fungal, origin of perylene. A comprehensive analysis of peat deposits, combined with advances in molecular and statistical techniques, continues to elucidate on the complex biogeochemical processes that contribute to the presence of perylene in natural environments.
求助全文
约1分钟内获得全文 求助全文
来源期刊
International Journal of Coal Geology
International Journal of Coal Geology 工程技术-地球科学综合
CiteScore
11.00
自引率
14.30%
发文量
145
审稿时长
38 days
期刊介绍: The International Journal of Coal Geology deals with fundamental and applied aspects of the geology and petrology of coal, oil/gas source rocks and shale gas resources. The journal aims to advance the exploration, exploitation and utilization of these resources, and to stimulate environmental awareness as well as advancement of engineering for effective resource management.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信