PMID- 36775915 OWN - NLM STAT- MEDLINE DCOM- 20230223 LR - 20230323 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 57 IP - 7 DP - 2023 Feb 21 TI - In Vivo Tracking of Persistent Organic Pollutants via a Coaxially Integrated and Implanted Photofuel Microsensor. PG - 2826-2836 LID - 10.1021/acs.est.2c08245 [doi] AB - In vivo tracking of persistent organic pollutants (POPs) is of great significance for assessing their risks to the ecological environment and human health. However, existing in vivo POPs detection methods are limited by the lethal sampling of living organisms, complex sample preparation processes, or bulky testing equipment. Photoelectrochemical (PEC) sensing with the merits of high sensitivity and simple equipment is a fast-developed method for in vivo analysis. A major obstacle for in vivo PEC sensors is the separated implantation of multiple electrodes and a light source, which raises concerns like multielectrode biofouling and electroactive molecules interference in the complex environment, uncertain electrode implant distance, and multiple insertion operations. Here, a coaxially implanted photofuel microsensor was developed by hiding the optical fiber-based photoanode inside the glass capillary-based biocathode, and the model target PCB77 can be detected with an ultralow detection limit (2.8 fg/mL). This unique photoanode-biocathode-light source integrated structure ensures excellent selectivity, good antifouling ability and biocompatibility, high accuracy, and less implant mechanical damage. Combined with a handheld pH meter, our sensor achieved convenient and direct tracking of the bioaccumulation levels of PCB77 in freely swimming fish. FAU - Tang, Ying AU - Tang Y AD - College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China. FAU - Liu, Yanwen AU - Liu Y AD - College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China. FAU - Wang, Jinmiao AU - Wang J AD - College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China. FAU - Wang, Juan AU - Wang J AD - College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China. FAU - Liu, Zhihong AU - Liu Z AUID- ORCID: 0000-0003-1500-9342 AD - College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China. AD - College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230212 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Persistent Organic Pollutants) RN - 0 (Environmental Pollutants) SB - IM MH - Humans MH - Persistent Organic Pollutants MH - *Environmental Pollutants/analysis MH - Electrodes MH - Electrochemical Techniques/methods MH - *Biosensing Techniques MH - Limit of Detection OTO - NOTNLM OT - coaxially integrated structure OT - in vivo OT - persistent organic pollutants OT - photoelectrochemical sensor OT - swimming fish EDAT- 2023/02/14 06:00 MHDA- 2023/02/25 06:00 CRDT- 2023/02/13 00:53 PHST- 2023/02/14 06:00 [pubmed] PHST- 2023/02/25 06:00 [medline] PHST- 2023/02/13 00:53 [entrez] AID - 10.1021/acs.est.2c08245 [doi] PST - ppublish SO - Environ Sci Technol. 2023 Feb 21;57(7):2826-2836. doi: 10.1021/acs.est.2c08245. Epub 2023 Feb 12.