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This study first characterized the levels and compositions of 19 LCMs in organisms in the Pearl River Estuary (PRE), estimated their bioaccumulation and trophic transfer potential, and identified priority contaminants. LCMs were generally accumulated in organisms from sediment, and the LCM concentrations in all organisms ranged from 32.35 to 1367 ng\/g lipid weight. The main LCMs in organisms were biphenyls and analogues (BAs) (76.6%), followed by cyanobiphenyls and analogues (CBAs) (15.1%), and the least were fluorinated biphenyls and analogues (FBAs) (11.2%). The most abundant LCM monomers of BAs, FBAs, and CBAs in LCMs in organisms were 1-(4-propylcyclohexyl)-4-vinylcyclohexane (15.1%), 1-ethoxy-2,3-difluoro-4-(4-(4-propylcyclohexyl) cyclohexyl) benzene (EDPBB, 10.1%), and 4\u2032-propoxy-4-biphenylcarbonitrile (5.1%), respectively. The niche studies indicated that the PRE food web was composed of terrestrial-based diet and marine food chains. Most LCMs exhibited biodilution in the terrestrial-based diet and marine food chains, except for EDPBB and 4,4\u2032-bis\u00ad(4-propylcyclohexyl) biphenyl (BPCHB). The hydrophobicity, position of fluorine substitution of LCMs, and biological habits may be important factors affecting the bioaccumulation and trophic transfer of LCMs. BPCHB, 1-(prop-1-enyl)-4-(4-propylcyclohexyl) cyclohexane, and EDPBB were characterized as priority contaminants. This study first reports the trophic transfer processes and mechanisms of LCMs and the biomonitoring in PRE.<\/jats:p>","DOI":"10.1021\/acs.est.4c04962","type":"journal-article","created":{"date-parts":[[2024,8,27]],"date-time":"2024-08-27T12:51:34Z","timestamp":1724763094000},"page":"16131-16141","source":"Crossref","is-referenced-by-count":27,"title":["First Report on\nthe Trophic Transfer and Priority\nList of Liquid Crystal Monomers in the Pearl River Estuary"],"prefix":"10.1021","volume":"58","author":[{"given":"Yi-Ye","family":"Jiang","sequence":"first","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8850-2456","authenticated-orcid":true,"given":"YanHong","family":"Zeng","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"CAS Center for Excellence in Deep Earth Science , ,","place":["Guangzhou, China, 510640"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling","family":"Long","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Guo","sequence":"additional","affiliation":[{"name":"Guangdong University of Petrochemical Technology , ,","place":["Maoming, China, 525000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui-Feng","family":"Lu","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng-Peng","family":"Chen","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zi-Jian","family":"Pan","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan-Ting","family":"Zhang","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"University of Chinese Academy of Sciences , ,","place":["Beijing, China, 100049"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2572-8108","authenticated-orcid":true,"given":"Xiao-Jun","family":"Luo","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"CAS Center for Excellence in Deep Earth Science , ,","place":["Guangzhou, China, 510640"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6358-8698","authenticated-orcid":true,"given":"Bi-Xian","family":"Mai","sequence":"additional","affiliation":[{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , , ,","place":["Guangzhou, China, 510640"]},{"name":"CAS Center for Excellence in Deep Earth Science , ,","place":["Guangzhou, China, 510640"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2024,8,27]]},"reference":[{"issue":"52","key":"2026081707140172100_cit1","doi-asserted-by":"publisher","first-page":"26450","DOI":"10.1073\/pnas.1915322116","article-title":"Persistent, bioaccumulative, and toxic properties of liquid crystal\nmonomers and their detection in indoor residential dust","volume":"116","author":"Su","year":"2019","journal-title":"Proc. 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