{"id":"https://openalex.org/W2342582019","doi":"https://doi.org/10.2134/agronmonogr9.2.c9","title":"Hydrogen\u2010Ion Activity","display_name":"Hydrogen\u2010Ion Activity","publication_year":1965,"publication_date":"1965-01-01","ids":{"openalex":"https://openalex.org/W2342582019","doi":"https://doi.org/10.2134/agronmonogr9.2.c9","mag":"2342582019"},"language":"en","primary_location":{"id":"doi:10.2134/agronmonogr9.2.c9","doi":"https://doi.org/10.2134/agronmonogr9.2.c9","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronmonogr9.2.c9","pdf_url":null,"source":{"id":"https://openalex.org/S4210190827","display_name":"Agronomy monograph/Agronomy","issn_l":"0065-4663","issn":["0065-4663","2156-3276"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Agronomy Monographs","raw_type":"other"},"volume":{"id":"https://openalex.org/W4242237425","display_name":"Methods of Soil Analysis"},"type":"book-chapter","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5057738028","display_name":"Michael Peech","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I205783295","display_name":"Cornell University","ror":"https://ror.org/05bnh6r87","country_code":"US","type":"education","lineage":["https://openalex.org/I205783295"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Michael Peech","raw_affiliation_strings":["Cornell University, Ithaca, New York"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Cornell University, Ithaca, New York","institution_ids":["https://openalex.org/I205783295"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5057738028"],"corresponding_institution_ids":["https://openalex.org/I205783295"],"apc_list":null,"apc_paid":null,"fwci":3.6842,"has_fulltext":false,"cited_by_count":637,"citation_normalized_percentile":{"value":0.92822967,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"914","last_page":"926"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":0.7085000276565552,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":0.7085000276565552,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12754","display_name":"Plant Growth and Agriculture Techniques","score":0.2800000011920929,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12792","display_name":"Soil Management and Crop Yield","score":0.0032999999821186066,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/soil-ph","display_name":"soil pH","score":0.8960000276565552},{"id":"https://openalex.org/keywords/hydrogen-ion-activity","display_name":"hydrogen ion activity","score":0.9639999866485596},{"id":"https://openalex.org/keywords/soil-suspension","display_name":"soil suspension","score":0.6510000228881836},{"id":"https://openalex.org/keywords/dilution-effect","display_name":"dilution effect","score":0.7879999876022339},{"id":"https://openalex.org/keywords/vacuum-tube-voltmeter","display_name":"vacuum tube voltmeter","score":0.8059999942779541},{"id":"https://openalex.org/keywords/buffer-solutions","display_name":"buffer solutions","score":0.718999981880188},{"id":"https://openalex.org/keywords/soil-analysis","display_name":"soil analysis","score":0.6549999713897705}],"concepts":[{"id":"https://openalex.org/C2779429693","wikidata":"https://www.wikidata.org/wiki/Q274959","display_name":"Distilled water","level":2,"score":0.7250475287437439},{"id":"https://openalex.org/C124614425","wikidata":"https://www.wikidata.org/wiki/Q1813495","display_name":"Potentiometric titration","level":3,"score":0.6301071643829346},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.621479868888855},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.5270878672599792},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.5047653913497925},{"id":"https://openalex.org/C111899830","wikidata":"https://www.wikidata.org/wiki/Q300965","display_name":"pH meter","level":2,"score":0.47547951340675354},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.456326961517334},{"id":"https://openalex.org/C105341887","wikidata":"https://www.wikidata.org/wiki/Q1307987","display_name":"Suspension (topology)","level":3,"score":0.4421052932739258},{"id":"https://openalex.org/C96618451","wikidata":"https://www.wikidata.org/wiki/Q3028008","display_name":"Dilution","level":2,"score":0.4409897029399872},{"id":"https://openalex.org/C145148216","wikidata":"https://www.wikidata.org/wiki/Q36496","display_name":"Ion","level":2,"score":0.383951872587204},{"id":"https://openalex.org/C179104552","wikidata":"https://www.wikidata.org/wiki/Q11165","display_name":"Inorganic chemistry","level":1,"score":0.3395651578903198},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.29999905824661255},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.28226959705352783},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.274612158536911},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.26622724533081055},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.08204281330108643},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.073731929063797},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.06986445188522339},{"id":"https://openalex.org/C5961521","wikidata":"https://www.wikidata.org/wiki/Q746083","display_name":"Homotopy","level":2,"score":0.0},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.0},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C147789679","wikidata":"https://www.wikidata.org/wiki/Q11372","display_name":"Physical chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2134/agronmonogr9.2.c9","doi":"https://doi.org/10.2134/agronmonogr9.2.c9","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronmonogr9.2.c9","pdf_url":null,"source":{"id":"https://openalex.org/S4210190827","display_name":"Agronomy monograph/Agronomy","issn_l":"0065-4663","issn":["0065-4663","2156-3276"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Agronomy Monographs","raw_type":"other"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W185401002","https://openalex.org/W638238458","https://openalex.org/W1982836372","https://openalex.org/W1986565456","https://openalex.org/W1995071964","https://openalex.org/W1996641541","https://openalex.org/W1999222203","https://openalex.org/W2006600780","https://openalex.org/W2025069425","https://openalex.org/W2031218935","https://openalex.org/W2053800145","https://openalex.org/W2064951780","https://openalex.org/W2066695377","https://openalex.org/W2078302556","https://openalex.org/W2082534398","https://openalex.org/W2082779455","https://openalex.org/W2126738842","https://openalex.org/W2776456527","https://openalex.org/W3023671324"],"related_works":["https://openalex.org/W7098931496","https://openalex.org/W2157528294","https://openalex.org/W4384201199","https://openalex.org/W2565607893","https://openalex.org/W1623270064","https://openalex.org/W7095547370","https://openalex.org/W2468231156","https://openalex.org/W1982347164","https://openalex.org/W6967642437","https://openalex.org/W6960307812"],"abstract_inverted_index":{"The":[0],"determination":[1],"of":[2,8,23,35,39,46,51,56,66,89,94,103,111,116,122],"the":[3,13,20,28,32,37,44,47,52,57,60,67,86,95,101,104,109,112,128],"hydrogen-ion":[4],"activity":[5],"or":[6,59,79,143],"pH":[7,45,54,82,90,117,139,145],"soils":[9],"is":[10,41,130],"by":[11,140],"far":[12],"most":[14],"commonly":[15],"made":[16],"soil":[17,24,48,58],"test.":[18],"Within":[19],"entire":[21],"range":[22],"water":[25,62],"content":[26],"from":[27],"moisture":[29],"equivalent":[30],"to":[31,42],"soil-to-water":[33],"ratio":[34],"1:5,":[36],"effect":[38],"dilution":[40],"increase":[43],"suspension,":[49],"regardless":[50],"initial":[53],"value":[55],"distilled":[61],"used":[63],"in":[64,138],"preparation":[65],"suspensions.":[68],"A":[69],"vacuum":[70,96],"tube":[71,97],"voltmeter":[72],"may":[73],"be":[74],"either":[75],"a":[76,80],"potentiometric":[77,87],"type":[78,88],"direct-reading":[81],"meter.":[83],"Measurements":[84],"with":[85,132],"meter":[91,129],"are":[92],"independent":[93],"circuit":[98],"characteristics,":[99],"and":[100],"accuracy":[102],"results":[105,125],"depends":[106],"only":[107],"on":[108],"linearity":[110],"slidewire.":[113],"Both":[114],"types":[115],"meters":[118],"are,":[119],"however,":[120],"capable":[121],"giving":[123],"satisfactory":[124],"provided":[126],"that":[127],"standardized":[131],"two":[133],"reference":[134],"buffer":[135],"solutions":[136],"differing":[137],"about":[141],"2":[142],"3":[144],"units.":[146]},"counts_by_year":[{"year":2026,"cited_by_count":14},{"year":2025,"cited_by_count":20},{"year":2024,"cited_by_count":24},{"year":2023,"cited_by_count":14},{"year":2022,"cited_by_count":23},{"year":2021,"cited_by_count":27},{"year":2020,"cited_by_count":15},{"year":2019,"cited_by_count":11},{"year":2018,"cited_by_count":14},{"year":2017,"cited_by_count":16},{"year":2016,"cited_by_count":9},{"year":2015,"cited_by_count":15},{"year":2014,"cited_by_count":23},{"year":2013,"cited_by_count":20},{"year":2012,"cited_by_count":22}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}
