{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T06:23:31Z","timestamp":1769581411919,"version":"3.49.0"},"reference-count":53,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2021,6,29]],"date-time":"2021-06-29T00:00:00Z","timestamp":1624924800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002261","name":"Russian Foundation for Basic Research","doi-asserted-by":"publisher","award":["18-53-80010"],"award-info":[{"award-number":["18-53-80010"]}],"id":[{"id":"10.13039\/501100002261","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Department of Science &amp; Technology (DST), Government of India","award":["DST\/IMRCD\/BRICS\/Pilot Call 2\/GLOWSENS\/2018 (G), dated 20\/02\/2019"],"award-info":[{"award-number":["DST\/IMRCD\/BRICS\/Pilot Call 2\/GLOWSENS\/2018 (G), dated 20\/02\/2019"]}]},{"name":"NSF-UKRI","award":["NE\/T012331\/1"],"award-info":[{"award-number":["NE\/T012331\/1"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We report on the development of a simple and cost-effective potentiometric sensor array that is based on manual \u201cdrawing\u201d on the polymeric support with the pencils composed of graphite and different types of zeolites. The sensor array demonstrates distinct sensitivity towards a variety of inorganic ions in aqueous media. This multisensor system has been successfully applied to quantitative analysis of 100 real-life surface waters sampled in Mahananda and Hooghly rivers in the West Bengal state (India). Partial least squares regression has been utilized to relate responses of the sensors to the values of different water quality parameters. It has been found that the developed sensor array, or electronic tongue, is capable of quantifying total hardness, total alkalinity, and calcium content in the samples, with the mean relative errors below 18%.<\/jats:p>","DOI":"10.3390\/s21134471","type":"journal-article","created":{"date-parts":[[2021,6,29]],"date-time":"2021-06-29T22:39:43Z","timestamp":1625006383000},"page":"4471","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["A Pencil-Drawn Electronic Tongue for Environmental Applications"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5667-6910","authenticated-orcid":false,"given":"Dmitry","family":"Kirsanov","sequence":"first","affiliation":[{"name":"Institute of Chemistry, Mendeleev Center, St. Petersburg State University, Universitetskaya nab. 7\/9, St Petersburg 199034, Russia"},{"name":"Laboratory of Artificial Sensory Systems, ITMO University, Kronversky pr. 49, St Petersburg 197101, Russia"}]},{"given":"Subhankar","family":"Mukherjee","sequence":"additional","affiliation":[{"name":"Agri and Environmental Electronics (AEE) Group, Centre for Development of Advanced Computing (C-DAC), Sector\u2014V, Salt Lake, Kolkata 700091, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8189-906X","authenticated-orcid":false,"given":"Souvik","family":"Pal","sequence":"additional","affiliation":[{"name":"Agri and Environmental Electronics (AEE) Group, Centre for Development of Advanced Computing (C-DAC), Sector\u2014V, Salt Lake, Kolkata 700091, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2180-7236","authenticated-orcid":false,"given":"Koustuv","family":"Ghosh","sequence":"additional","affiliation":[{"name":"Agri and Environmental Electronics (AEE) Group, Centre for Development of Advanced Computing (C-DAC), Sector\u2014V, Salt Lake, Kolkata 700091, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7313-6182","authenticated-orcid":false,"given":"Nabarun","family":"Bhattacharyya","sequence":"additional","affiliation":[{"name":"Agri and Environmental Electronics (AEE) Group, Centre for Development of Advanced Computing (C-DAC), Sector\u2014V, Salt Lake, Kolkata 700091, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1655-9899","authenticated-orcid":false,"given":"Rajib","family":"Bandyopadhyay","sequence":"additional","affiliation":[{"name":"Department of Instrumentation & Electronics Engg, Jadavpur University, Salt Lake Campus, Block LB, Sector III, Kolkata 700098, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5921-2241","authenticated-orcid":false,"given":"Martin","family":"Jendrlin","sequence":"additional","affiliation":[{"name":"Lennard-Jones Laboratories, Birchall Centre, Keele University, Keele, Staffordshire ST5 5BG, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5141-1884","authenticated-orcid":false,"given":"Aleksandar","family":"Radu","sequence":"additional","affiliation":[{"name":"Lennard-Jones Laboratories, Birchall Centre, Keele University, Keele, Staffordshire ST5 5BG, UK"}]},{"given":"Vladimir","family":"Zholobenko","sequence":"additional","affiliation":[{"name":"Lennard-Jones Laboratories, Birchall Centre, Keele University, Keele, Staffordshire ST5 5BG, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2333-5394","authenticated-orcid":false,"given":"Monireh","family":"Dehabadi","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Mendeleev Center, St. Petersburg State University, Universitetskaya nab. 7\/9, St Petersburg 199034, Russia"}]},{"given":"Andrey","family":"Legin","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Mendeleev Center, St. Petersburg State University, Universitetskaya nab. 7\/9, St Petersburg 199034, Russia"},{"name":"Laboratory of Artificial Sensory Systems, ITMO University, Kronversky pr. 49, St Petersburg 197101, Russia"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1748","DOI":"10.1021\/ac60119a030","article-title":"Semiquantitative Specific Test Paper for Glucose in Urine","volume":"28","author":"Comer","year":"1956","journal-title":"Anal. 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