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A 1582 nm distributed feedback (DFB) diode laser was employed as the excitation light source of the photoacoustic sensor. Operating pressure within the photoacoustic cell and laser modulation depth were optimized at room temperature, and the long-term stability of the photoacoustic sensor system was analyzed by an Allan-Werle deviation analysis. Experimental results showed that under atmospheric pressure and room temperature conditions, the photoacoustic detection module exhibits a sensitivity of 11.39 \u03bcV\/ppm of H2S and can reach a minimum detection limit (1\u03c3) of 140 ppb of H2S with an integration time of 1 s. The sensor was tested for in-field measurements by sampling gas in the sewer near the Shanxi University canteen: levels of H2S of 81.5 ppm were measured, below the 100 ppm limit reported by the Chinese sewer bidding document.<\/jats:p>","DOI":"10.3390\/molecules27196505","type":"journal-article","created":{"date-parts":[[2022,10,9]],"date-time":"2022-10-09T23:31:43Z","timestamp":1665358303000},"page":"6505","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Detection of Hydrogen Sulfide in Sewer Using an Erbium-Doped Fiber Amplified Diode Laser and a Gold-Plated Photoacoustic Cell"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8379-7868","authenticated-orcid":false,"given":"Chaofan","family":"Feng","sequence":"first","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2603-7648","authenticated-orcid":false,"given":"Marilena","family":"Giglio","sequence":"additional","affiliation":[{"name":"PolySense Lab\u2014Dipartimento Interateneo di Fisica, University and Politecnico of Bari, Amendola 173, 70126 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Biao","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3790-3767","authenticated-orcid":false,"given":"Angelo","family":"Sampaolo","sequence":"additional","affiliation":[{"name":"PolySense Lab\u2014Dipartimento Interateneo di Fisica, University and Politecnico of Bari, Amendola 173, 70126 Bari, Italy"},{"name":"PolySense Innovations Srl, Amendola 173, 70126 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pietro","family":"Patimisco","sequence":"additional","affiliation":[{"name":"PolySense Lab\u2014Dipartimento Interateneo di Fisica, University and Politecnico of Bari, Amendola 173, 70126 Bari, Italy"},{"name":"PolySense Innovations Srl, Amendola 173, 70126 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4867-8166","authenticated-orcid":false,"given":"Vincenzo","family":"Spagnolo","sequence":"additional","affiliation":[{"name":"PolySense Lab\u2014Dipartimento Interateneo di Fisica, University and Politecnico of Bari, Amendola 173, 70126 Bari, Italy"},{"name":"PolySense Innovations Srl, Amendola 173, 70126 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7379-3388","authenticated-orcid":false,"given":"Lei","family":"Dong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongpeng","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1016\/j.watres.2014.07.026","article-title":"Determining the long-term effects of H2S concentration, relative humidity and air temperature on concrete sewer corrosion","volume":"65","author":"Jiang","year":"2014","journal-title":"Water Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/j.trac.2011.08.008","article-title":"A review of sensor-based methods for monitoring hydrogen sulfide","volume":"32","author":"Pandey","year":"2012","journal-title":"TrAC Trends Anal. 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