{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T11:16:51Z","timestamp":1780744611424,"version":"3.54.1"},"reference-count":24,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2016,11,10]],"date-time":"2016-11-10T00:00:00Z","timestamp":1478736000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51277188"],"award-info":[{"award-number":["51277188"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"China New Century Excellent Talents","award":["NCET-12-0590"],"award-info":[{"award-number":["NCET-12-0590"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Latent insulation defects introduced in manufacturing process of gas-insulated switchgears can lead to partial discharge during long-time operation, even to insulation fault if partial discharge develops further. Monitoring of decomposed components of SF6, insulating medium of gas-insulated switchgear, is a feasible method of early-warning to avoid the occurrence of sudden fault. Polyaniline thin-film with protonic acid deposited possesses wide application prospects in the gas-sensing field. Polyaniline thin-film sensors with only sulfosalicylic acid deposited and with both hydrochloric acid and sulfosalicylic acid deposited were prepared by chemical oxidative polymerization method. Gas-sensing experiment was carried out to test properties of new sensors when exposed to H2S and SO2, two decomposed products of SF6 under discharge. The gas-sensing properties of these two sensors were compared with that of a hydrochloric acid deposited sensor. Results show that the hydrochloric acid and sulfosalicylic acid deposited polyaniline thin-film sensor shows the most outstanding sensitivity and selectivity to H2S and SO2 when concentration of gases range from 10 to 100 \u03bcL\/L, with sensitivity changing linearly with concentration of gases. The sensor also possesses excellent long-time and thermal stability. This research lays the foundation for preparing practical gas-sensing devices to detect H2S and SO2 in gas-insulated switchgears at room temperature.<\/jats:p>","DOI":"10.3390\/s16111889","type":"journal-article","created":{"date-parts":[[2016,11,10]],"date-time":"2016-11-10T10:51:39Z","timestamp":1478775099000},"page":"1889","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Investigation of Gas-Sensing Property of Acid-Deposited Polyaniline Thin-Film Sensors for Detecting H2S and SO2"],"prefix":"10.3390","volume":"16","author":[{"given":"Xingchen","family":"Dong","sequence":"first","affiliation":[{"name":"State Key Laboratory of Power Transmission Equipment &amp; System Security and New Technology, Chongqing University, Chongqing 400044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoxing","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Power Transmission Equipment &amp; System Security and New Technology, Chongqing University, Chongqing 400044, China"},{"name":"School of Electrical Engineering, Wuhan University, Wuhan 430072, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoqing","family":"Wu","sequence":"additional","affiliation":[{"name":"Fuyang Power Supply Company, State Grid Anhui Electric Power Company, Fuyang 236000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Cui","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Power Transmission Equipment &amp; System Security and New Technology, Chongqing University, Chongqing 400044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dachang","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Wuhan University, Wuhan 430072, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2016,11,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"995","DOI":"10.1109\/TDEI.2014.6832242","article-title":"Decomposition characteristics of SF6 under thermal fault for temperatures below 400 \u00b0C","volume":"21","author":"Zeng","year":"2014","journal-title":"IEEE Trans. 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