{"id":"https://openalex.org/W2034553618","doi":"https://doi.org/10.1155/2011/980709","title":"An Amperometric Biosensor Based on Alanine Dehydrogenase for the Determination of Low Level of Ammonium Ion in Water","display_name":"An Amperometric Biosensor Based on Alanine Dehydrogenase for the Determination of Low Level of Ammonium Ion in Water","publication_year":2011,"publication_date":"2011-01-01","ids":{"openalex":"https://openalex.org/W2034553618","doi":"https://doi.org/10.1155/2011/980709","mag":"2034553618"},"language":"lv","primary_location":{"id":"doi:10.1155/2011/980709","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2011/980709","pdf_url":"http://downloads.hindawi.com/journals/js/2011/980709.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"http://downloads.hindawi.com/journals/js/2011/980709.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5050838133","display_name":"Tan Ling Ling","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093434","display_name":"Institute for Research and Development","ror":"https://ror.org/00691gs61","country_code":"LK","type":"government","lineage":["https://openalex.org/I4210093434"]},{"id":"https://openalex.org/I885383172","display_name":"National University of Malaysia","ror":"https://ror.org/00bw8d226","country_code":"MY","type":"education","lineage":["https://openalex.org/I885383172"]}],"countries":["LK","MY"],"is_corresponding":false,"raw_author_name":"Tan Ling Ling","raw_affiliation_strings":["School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, 43600 Bangi, Malaysia","Institute for Environment and Development (LESTARI)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, 43600 Bangi, Malaysia","institution_ids":["https://openalex.org/I885383172"]},{"raw_affiliation_string":"Institute for Environment and Development (LESTARI)","institution_ids":["https://openalex.org/I4210093434"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069611854","display_name":"Musa Ahmad","orcid":"https://orcid.org/0000-0002-8316-0151"},"institutions":[{"id":"https://openalex.org/I112982808","display_name":"Universiti Sains Islam Malaysia","ror":"https://ror.org/020ast312","country_code":"MY","type":"education","lineage":["https://openalex.org/I112982808"]},{"id":"https://openalex.org/I40798026","display_name":"Nilai University","ror":"https://ror.org/037zqsm37","country_code":"MY","type":"education","lineage":["https://openalex.org/I40798026"]}],"countries":["MY"],"is_corresponding":false,"raw_author_name":"Musa Ahmad","raw_affiliation_strings":["Chancellor Office, Islamic Science University of Malaysia, Bandar Baru Nilai, Negeri Sembilan, 71800 Nilai, Malaysia","UNIVERSITI SAINS ISLAM MALAYSIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chancellor Office, Islamic Science University of Malaysia, Bandar Baru Nilai, Negeri Sembilan, 71800 Nilai, Malaysia","institution_ids":["https://openalex.org/I40798026"]},{"raw_affiliation_string":"UNIVERSITI SAINS ISLAM MALAYSIA","institution_ids":["https://openalex.org/I112982808"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5031383187","display_name":"Lee Yook Heng","orcid":"https://orcid.org/0000-0001-9843-9182"},"institutions":[{"id":"https://openalex.org/I885383172","display_name":"National University of Malaysia","ror":"https://ror.org/00bw8d226","country_code":"MY","type":"education","lineage":["https://openalex.org/I885383172"]}],"countries":["MY"],"is_corresponding":true,"raw_author_name":"Lee Yook Heng","raw_affiliation_strings":["School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, 43600 Bangi, Malaysia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, 43600 Bangi, Malaysia","institution_ids":["https://openalex.org/I885383172"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5031383187"],"corresponding_institution_ids":["https://openalex.org/I885383172"],"apc_list":{"value":2100,"currency":"USD","value_usd":2100},"apc_paid":{"value":2100,"currency":"USD","value_usd":2100},"fwci":0.6566,"has_fulltext":true,"cited_by_count":14,"citation_normalized_percentile":{"value":0.70115291,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"2011","issue":null,"first_page":"1","last_page":"10"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1502","display_name":"Bioengineering"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1502","display_name":"Bioengineering"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10212","display_name":"Electrochemical sensors and biosensors","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11434","display_name":"Electrochemical Analysis and Applications","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1603","display_name":"Electrochemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.385877400636673}],"concepts":[{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.385877400636673}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1155/2011/980709","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2011/980709","pdf_url":"http://downloads.hindawi.com/journals/js/2011/980709.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:863902f957644ce09f46d9899005e5b0","is_oa":true,"landing_page_url":"https://doaj.org/article/863902f957644ce09f46d9899005e5b0","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Sensors, Vol 2011 (2011)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2011/980709","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2011/980709","pdf_url":"http://downloads.hindawi.com/journals/js/2011/980709.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/6","display_name":"Clean water and sanitation","score":0.6000000238418579}],"awards":[{"id":"https://openalex.org/G2476017161","display_name":null,"funder_award_id":"UKM-OUP-NBT-29-151/2011","funder_id":"https://openalex.org/F4320322699","funder_display_name":"Universiti Kebangsaan Malaysia"}],"funders":[{"id":"https://openalex.org/F4320322699","display_name":"Universiti Kebangsaan Malaysia","ror":"https://ror.org/00bw8d226"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2034553618.pdf","grobid_xml":"https://content.openalex.org/works/W2034553618.grobid-xml"},"referenced_works_count":39,"referenced_works":["https://openalex.org/W1497044438","https://openalex.org/W1968613929","https://openalex.org/W1974610359","https://openalex.org/W1975032225","https://openalex.org/W1979002131","https://openalex.org/W1979218569","https://openalex.org/W1980037268","https://openalex.org/W1986432734","https://openalex.org/W1988322302","https://openalex.org/W1996048374","https://openalex.org/W2002659514","https://openalex.org/W2003166600","https://openalex.org/W2005375850","https://openalex.org/W2008592253","https://openalex.org/W2011729164","https://openalex.org/W2031963558","https://openalex.org/W2038690750","https://openalex.org/W2042322054","https://openalex.org/W2044501231","https://openalex.org/W2049114919","https://openalex.org/W2050166279","https://openalex.org/W2054376214","https://openalex.org/W2060588526","https://openalex.org/W2061426213","https://openalex.org/W2064061717","https://openalex.org/W2065439986","https://openalex.org/W2065896686","https://openalex.org/W2073826156","https://openalex.org/W2074132127","https://openalex.org/W2079133856","https://openalex.org/W2083723210","https://openalex.org/W2086510772","https://openalex.org/W2087501781","https://openalex.org/W2088678947","https://openalex.org/W2092083205","https://openalex.org/W2098632774","https://openalex.org/W2116225504","https://openalex.org/W2140379479","https://openalex.org/W2166675599"],"related_works":["https://openalex.org/W4387497383","https://openalex.org/W2948807893","https://openalex.org/W2899084033","https://openalex.org/W2778153218","https://openalex.org/W2748952813","https://openalex.org/W1531601525","https://openalex.org/W4391375266","https://openalex.org/W2078814861","https://openalex.org/W2527526854","https://openalex.org/W1976181487"],"abstract_inverted_index":{"An":[0],"amperometric":[1],"electrochemical":[2],"biosensor":[3,73,156],"has":[4,116],"been":[5,117],"developed":[6],"for":[7],"ammonium":[8],"(<mml:math":[9],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[10,60,88,94,124],"id=\"M1\"><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>NH</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>)":[11],"ion":[12],"detection":[13,107,169],"by":[14],"immobilising":[15],"alanine":[16],"dehydrogenase":[17],"(AlaDH)":[18],"enzyme":[19],"in":[20,97,126,138],"a":[21,32,78,104],"photocurable":[22],"methacrylic":[23],"membrane":[24],"made":[25],"up":[26],"of":[27,47,65,80,100,106,109,135,154],"poly(2-hydroxyethyl":[28],"methacrylate)":[29],"(pHEMA)":[30],"on":[31,43,147],"screen-printed":[33],"carbon":[34],"paste":[35],"electrode":[36],"(SPE).":[37],"The":[38,72,113,133,151],"current":[39],"detected":[40],"was":[41,74,157],"based":[42],"the":[44,57,98,121,139,148,155,160],"electrocatalytic":[45],"oxidation":[46],"nicotinamide":[48],"adenine":[49],"dinucleotide":[50],"reduced":[51],"(NADH)":[52],"that":[53],"is":[54,69],"proportional":[55],"to":[56,120,143,159],"consumption":[58],"of<mml:math":[59,123],"id=\"M2\"><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>NH</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ion":[61],"whilst":[62],"enzymatic":[63],"amination":[64],"AlaDH":[66],"and":[67,83,171],"pyruvate":[68],"taking":[70],"place.":[71],"operated":[75],"amperometrically":[76],"at":[77,175],"potential":[79],"+0.6":[81],"V":[82],"optimum":[84],"pH":[85],"7.":[86],"The<mml:math":[87],"id=\"M3\"><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>NH</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>biosensor":[89],"demonstrated":[90],"linear":[91,172],"response":[92,173],"to<mml:math":[93],"id=\"M4\"><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>NH</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ion":[95],"concentration":[96],"range":[99,174],"0.03\u20131.02":[101],"mg/L":[102],"with":[103,166],"limit":[105,170],"(LOD)":[108],"8.52":[110],"\u03bc":[111],"g/L.":[112],"proposed":[114,149],"method":[115,162],"successfully":[118],"applied":[119],"determination":[122],"id=\"M5\"><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>NH</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ion":[125],"river":[127],"water":[128],"samples":[129],"without":[130],"any":[131,145],"pretreatment.":[132],"levels":[134],"possible":[136],"interferents":[137],"waters":[140],"were":[141],"negligible":[142],"cause":[144],"interference":[146],"method.":[150],"analytical":[152],"performance":[153],"comparable":[158],"colorimetric":[161],"using":[163],"Nesslerisation":[164],"but":[165],"much":[167],"lower":[168],"ppb":[176],"level.":[177]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}