Article(id=1314918655234765454, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314918450573701162, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744041600000, receivedDateStr=2025-04-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791430637415, onlineDateStr=2026-10-08, pubDate=1766160000000, pubDateStr=2025-12-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791430637415, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791430637415, creator=13701087609, updateTime=1791430637415, updator=13701087609, issue=Issue{id=1314918450573701162, tenantId=1146029695717560320, journalId=1234093305789726721, year='2025', volume='45', issue='12', pageStart='6513', pageEnd='7104', issueExtLink='null', onlineDate='null', pubDate='1766160000000', pubDateStr='2025-12-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791430588620, creator='13701087609', updateTime=1791431575400, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314922589479333965, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314918450573701162, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314922589479333966, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314918450573701162, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=6869, endPage=6880, ext={EN=ArticleExt(id=1314918655427703439, articleId=1314918655234765454, tenantId=1146029695717560320, journalId=1234093305789726721, language=EN, title=Characteristics and transformation mechanism of dissolved organic matter components in the coal-grain overlapping areas of the Huaihe River Basin, columnId=1234106388083954308, journalTitle=China Environmental Science, columnName=Environmental Ecology, runingTitle=null, highlight=null, articleAbstract=

This study focused on the coal-grain overlapping areas of the Huaihe River Basin, analyzing 31 water samples through integrated EEMs-PARAFAC and FT-ICR MS techniques to unravel DOM molecular signatures and transformation pathways under intense anthropogenic disturbances. Key findings include: (1) PARAFAC identified three fluorescent components (C1: UV humic-like; C2: terrestrial humic acid; C3: tryptophan-like), where intensity distribution (C1 > C3 > C2) and spectral indices (FI=(1.77 ± 0.12); HIX = (0.73 ± 0.07)) revealed dual DOM origins from terrestrial inputs (agricultural tributaries) and microbial degradation (urbanized mainstream), highlighting their synergistic interactions. (2) FT-ICR MS unveiled a distinct "upstream agriculture-downstream industry" spatial gradient: CHO and CHON molecules dominated agricultural headwaters, while CHOS compounds increased downstream, governed by PAHs oxidative ring-opening and thioether-to-sulfonic-group conversion. (3) DOM in coal-grain overlapping areas exhibited "sulfur/nitrogen-enriched, multi-source coupling" characteristics. Elevated CHON proportions (33%~37%) in tributaries correlated with fertilizer-derived deamination processes, whereas downstream photochemical-metal co-catalysis (Fe²⁺/H₂O₂) triggered radical cleavage of "coal-sulfur" pollutants, generating highly aromatic, low-oxidation-state stable products. These findings elucidate the dual natural-anthropogenic regulatory mechanisms of DOM, providing molecular-level insights for organic pollutant source tracing and non-point source management in the basin.

, authors=Yan-jun LIU¹, Liang-min GAO^{1, *}, Hui-jun WU^{1, **}, Han SONG¹, Xiao-li KAI¹, Lei-lei LUAN¹, Xiao-qing CHEN¹, Jing XU¹, Zhen-dong PANG², authorsList=Yan-jun LIU, Liang-min GAO, Hui-jun WU, Han SONG, Xiao-li KAI, Lei-lei LUAN, Xiao-qing CHEN, Jing XU, Zhen-dong PANG, authorCompany=null, correspAuthors=Liang-min GAO, Hui-jun WU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314918655679361680, articleId=1314918655234765454, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=淮河流域煤粮复合区溶解性有机质组分特征及转化机制, columnId=1234106388268503686, journalTitle=中国环境科学, columnName=环境生态, runingTitle=null, highlight=null, articleAbstract=

本文以淮河流域煤粮复合区为研究对象，系统采集了煤粮复合区31个水体样品，通过耦合三维荧光光谱-平行因子分析（EEMs-PARAFAC）和傅里叶变换离子回旋共振质谱（FT-ICR MS）技术，揭示了高强度人为扰动下DOM 的组成特征，重点解析了淮南段DOM的分子转化路径．结果表明：（1）PARAFAC 模型识别出 3 种荧光组分（C1：UV 类腐殖质；C2：陆源胡敏酸；C3：类色氨酸），其强度分布（C1>C3>C2）及荧光参数（FI=（1.77 ±0.12），HIX=（0.73±0.07）），表明水体DOM 来源呈现陆源输入与微生物活动共同作用的特征，印证农业支流陆源输入与城市干流微生物降解的协同作用；（2）FT-ICR MS揭示DOM分子组成呈现“上游农业-下游工业”空间梯度，上游农业区以高占比CHO和CHON为特征，下游城市化区域CHOS占比提升，且PAHs氧化开环与硫醚向磺酸基转化主导分子转化过程；（3）煤粮复合区DOM具有“富硫氮、多源耦合”的特征，农业支流CHON占比（33%~37%）对应化肥输入衍生的脱氨反应，而干流下游“煤-硫”污染物通过光-金属协同催化（Fe²⁺/H₂O₂）驱动自由基断键，形成高芳香性、低氧化态的稳定产物．研究结果揭示了煤粮复合区DOM“自然-人为”双重调控机制，为流域有机污染溯源与面源治理提供了分子层面的理论依据．

, authors=刘彦君¹, 高良敏^{1, *}, 武慧君^{1, **}, 宋涵¹, 开晓莉¹, 栾磊磊¹, 陈晓晴¹, 许婧¹, 庞振东², authorsList=刘彦君, 高良敏, 武慧君, 宋涵, 开晓莉, 栾磊磊, 陈晓晴, 许婧, 庞振东, authorCompany=null, correspAuthors=高良敏, 武慧君, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=oM+UV7S4jr24hdlJ19VC/Q==, magXml=jJCq8k6nOE4VHCfjXzHdqA==, pdfUrl=null, pdf=ve55UCYWlWnelz/Et6xIdQ==, pdfFileSize=5542688, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=fimYX+GB8/++9u0b6YcbWw==, mapNumber=null, fund=null)}, authors=[Author(id=1314918656077820568, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314918655234765454, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2810587597@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1314918657701016218, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314918655234765454, authorId=1314918656077820568, language=EN, stringName=Yan-jun LIU, firstName=Yan-jun, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.School of Earth and Environmental, Anhui University of Science and Technology, Huainan 232001, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314918657789096603, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314918655234765454, authorId=1314918656077820568, language=CN, stringName=刘彦君, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.安徽理工大学地球与环境学院，安徽 淮南 232001, bio={"content":"

刘彦君（1997-），男，天津人，安徽理工大学，博士研究生，主要从事水污染控制及污水资源化技术、面源污染控制、碳排放管理、碳汇计量评估、碳中和技术开发、环境规划管理与评价以及环境技术开发等研究工作．发表论文6篇．2810587597@qq.com.

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刘彦君（1997-），男，天津人，安徽理工大学，博士研究生，主要从事水污染控制及污水资源化技术、面源污染控制、碳排放管理、碳汇计量评估、碳中和技术开发、环境规划管理与评价以及环境技术开发等研究工作．发表论文6篇．2810587597@qq.com.

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