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Pregnancy and infancy are sensitive windows for environmental exposure. However, few studies have investigated the presence of MPs in mother\u2013infant pairs, or the exposure source. In this study, nine mother\u2013infant pairs were recruited, and samples of placenta, cord blood, and meconium were collected. Information about the living environment and dietary habits were collected to determine the source of exposure during pregnancy. Micro-Raman spectroscopy was applied to identify MPs. In total, 9, 4, and 14 types of MPs were identified in the placenta, cord blood, and meconium samples, with particle counts of 34, 14, and 80, respectively. More than 80.47% of MPs detected in samples had a size of 100\u2013400 \u03bcm. The abundance of MPs exhibited the order of meconium &gt; placenta &gt; cord blood (Hc = 14.959, p &lt; 0.01). We found that the abundance of MPs in meconium from women who drank tea \u2265 3 times\/week during pregnancy was lower than in those who drank less (p = 0.048). Our study presents evidence of MPs transfer via the placenta\u2013cord blood\u2013meconium pathway. We also found that the habit of drinking tea among pregnant women might be related to the abundance of MPs in meconium.<\/jats:p>","DOI":"10.3390\/toxics12120850","type":"journal-article","created":{"date-parts":[[2024,11,26]],"date-time":"2024-11-26T05:06:53Z","timestamp":1732597613000},"page":"850","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":59,"title":["Microplastic Particles Detected in Fetal Cord Blood, Placenta, and Meconium: A Pilot Study of Nine Mother\u2013Infant Pairs in South China"],"prefix":"10.3390","volume":"12","author":[{"given":"Minting","family":"Zhu","sequence":"first","affiliation":[{"name":"School of Public Health, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou 510515, China"},{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2051-4581","authenticated-orcid":false,"given":"Xiaotian","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5157-6163","authenticated-orcid":false,"given":"Wei","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 3012 Fuqiang Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dan","family":"Zeng","sequence":"additional","affiliation":[{"name":"Department of Pharmacy, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen 518048, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2001-4923","authenticated-orcid":false,"given":"Pan","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Basic Medical Sciences, Jinan University, Guangzhou 510632, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weigui","family":"Ni","sequence":"additional","affiliation":[{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhijian","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bingyi","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lijuan","family":"Lai","sequence":"additional","affiliation":[{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhongai","family":"Ouyang","sequence":"additional","affiliation":[{"name":"School of Public Health, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou 510515, China"},{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingjie","family":"Fan","sequence":"additional","affiliation":[{"name":"School of Public Health, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou 510515, China"},{"name":"Department of Preventive Healthcare, Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, No. 2004 Hongli Road, Futian District, Shenzhen 518028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Alberghini, L., Truant, A., Santonicola, S., Colavita, G., and Giaccone, V. 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