Meta tags:

Headings (most frequently used words):

geochemistry, pco2, contents, medicine, and, aquatic, sciences, notation, in, see, also, references,

Text of the page (most frequently used words):
the (53), and (30), carbon (17), co2 (15), water (14), with (12), #geochemistry (12), log (12), dioxide (12), pressure (10), edit (9), blood (8), bar (8), than (8), wikipedia (7), chemistry (7), partial (7), are (7), atm (7), gas (6), can (6), about (5), this (5), page (5), from (5), equilibrium (5), values (5), which (5), concentration (5), notation (5), its (5), aquatic (5), contents (4), search (4), chemical (4), acid (4), 978 (4), isbn (4), arterial (4), sign (4), such (4), letter (4), inorganic (4), other (4), that (4), greater (4), mmhg (4), displaystyle (4), main (4), hide (4), move (4), sidebar (4), view (3), text (3), may (3), use (3), articles (3), links (3), oceanography (3), article (3), see (3), also (3), more (3), confusion (3), atmospheric (3), used (3), less (3), describe (3), dissolved (3), atmosphere (3), medicine (3), respiratory (3), tools (3), languages (2), pco (2), toggle (2), table (2), contact (2), privacy (2), policy (2), available (2), under (2), terms (2), non (2), creative (2), commons (2), attribution (2), license (2), was (2), 2026 (2), categories (2), cs1 (2), maint (2), location (2), missing (2), publisher (2), wayback (2), short (2), description (2), wikidata (2), limnology (2), units (2), measurement (2), analytical (2), base (2), retrieved (2), pco2 (2), link (2), cite (2), oclc (2), taylor (2), francis (2), aqueous (2), 2012 (2), references (2), carbonate (2), hypercapnia (2), alkalosis (2), acidosis (2), negative (2), commonly (2), two (2), power (2), when (2), clear (2), written (2), not (2), recommended (2), cause (2), lowercase (2), sørensen (2), for (2), effective (2), ions (2), activity (2), pressures (2), gases (2), often (2), denoted (2), uppercase (2), affected (2), respiration (2), into (2), photosynthesis (2), body (2), together (2), parameters (2), temperature (2), amount (2), phase (2), phases (2), thermodynamic (2), law (2), acidification (2), sciences (2), function (2), related (2), indicate (2), pascal (2), appearance (2), upload (2), file (2), changes (2), history (2), read (2), create (2), account (2), donate (2), menu (2), add, topic, mobile, cookie, statement, statistics, developers, code, conduct, legal, safety, contacts, disclaimers, additional, apply, using, site, you, agree, registered, trademark, profit, organization, wikimedia, foundation, inc, sharealike, rendered, parsoid, last, edited, september, utc, hidden, imported, webarchive, template, different, https, org, index, php, title, oldid, 1377256882, incorporates, glynda, rees, doyle, jodie, anita, mccutcheon, book, zeebe, richard, 2001, dieter, wolf, gladrow, amsterdam, 246683387, 052922, seawater, kinetics, isotopes, millero, frank, 2013, boca, raton, 958798815, 4665, 1255, appelo, postma, dieke, 2004, 2nd, crc, press, balkema, group, 683, 429, 15232, 1201, 9781439833544, doi, groundwater, pollution, langmuir, donald, 1997, 1st, upper, saddle, river, prentice, hall, 600, 0023674129, environmental, machine, 2014, archived, leticia, godoy, dias, sanderson, gasometria, artigo, revisão, fevereiro, dugdale, zieve, gasometría, medline, plus, xco, lysocline, compensation, depth, cycle, tension, medecine, practice, reported, scientific, literature, textbooks, typically, ranging, natural, first, notations, retain, true, whereas, third, positive, could, simply, unusual, because, considerable, logarithm, 316, ppmv, 0316, vol, early, 1970, avoid, unambiguous, necessary, there, several, possibilities, confused, prefix, scale, denote, very, low, numerical, where, mol, exactly, corresponds, reaction, severe, value, constant, solution, hydronium, logarithmic, contrast, physical, biological, processes, affect, degrades, releasing, column, increasing, assimilates, thereby, decreasing, organic, matter, additionally, soluble, warmer, cooler, hot, will, exhibit, larger, cold, same, system, these, speciation, species, hco, alkalinity, salinity, oceanographers, limnologists, measure, well, parameterize, influx, out, efflux, reacts, form, relative, solubility, unreactive, dissolves, rises, until, equals, overlying, conversely, effluxes, helium, bicarbonate, flux, generally, hypothetical, real, composed, solely, pure, would, exert, sample, described, 𝑓co, represents, ideal, higher, total, temperatures, fugacity, raoult, henry, freshwater, ocean, called, indicates, effectiveness, lungs, given, good, indicator, closely, factor, reflecting, without, lactic, normal, humans, range, hypoventilation, hyperventilation, homeostasis, diffusing, capacity, alveoli, ventilation, systemic, circulation, paco, hypocapnia, depending, context, refer, including, fractional, 013, 760, any, standard, unit, mpa, torr, hydrochemistry, climate, science, meteorology, physiology, molecule, reference, redirected, paco2, free, encyclopedia, item, projects, printable, version, download, pdf, print, export, switch, legacy, parser, get, shortened, url, information, permanent, what, here, general, actions, english, talk, українська, српски, srpski, português, italiano, հայերեն, français, فارسی, español, català, العربية, top, personal, special, pages, recent, community, portal, learn, help, contribute, random, current, events, navigation, jump, content,

Text of the page (random words):
pco2 wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 medicine 2 geochemistry and aquatic sciences 3 notation in geochemistry 4 see also 5 references toggle the table of contents pco 2 11 languages العربية català español فارسی français հայերեն italiano português српски srpski українська 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from paco2 partial pressure of carbon dioxide often used in reference to blood carbon dioxide molecule p co 2 or p co 2 displaystyle p_ ce co2 depending on the context and use is the partial pressure of carbon dioxide co 2 it can refer to blood physiology or to atmospheric chemistry and geochemistry including meteorology climate science hydrochemistry oceanography and limnology to describe the fractional pressure of co 2 as a function of its concentration in gas or dissolved phases the units of p co 2 or p co 2 displaystyle p_ ce co2 are pascal pa bar 10 5 pa atm 1 013 bar mmhg torr 1 760 atm or 1 mmhg or any other standard unit of pascal mpa or atmospheric pressure medicine edit main articles hypercapnia and hypocapnia in medicine the partial pressure of carbon dioxide in arterial blood is called p a co 2 displaystyle p_ a_ ce co2 or paco 2 measurement of p a co 2 displaystyle p_ a_ ce co2 in the systemic circulation indicates the effectiveness of ventilation at the lungs alveoli given the diffusing capacity of the gas it is a good indicator of respiratory function and the closely related factor of acid base homeostasis reflecting the amount of acid in the blood without lactic acid normal values for humans are in the range of 35 45 mmhg values less than this may indicate hyperventilation and if blood ph is greater than 7 45 respiratory alkalosis values greater than 45 mmhg may indicate hypoventilation and if blood ph is less than 7 35 respiratory acidosis 1 2 geochemistry and aquatic sciences edit see also ocean acidification and freshwater acidification in geochemistry and aquatic chemistry the partial pressure of co 2 generally denoted p co2 with an uppercase letter is the pressure that a hypothetical or real gas phase composed solely of pure carbon dioxide would exert on the aqueous phase when the two phases are in thermodynamic equilibrium at the sample s temperature and pressure as described by henry s law and raoult s law 3 4 the thermodynamic activity of co 2 gas is its fugacity 𝑓co 2 which represents the non ideal effective partial pressure of co 2 at higher total pressures and temperatures oceanographers and limnologists use p co 2 to measure the amount of carbon dioxide dissolved in water as well as to parameterize its flux into influx and out of efflux the atmosphere carbon dioxide reacts with water to form bicarbonate and carbonate ions such that the relative solubility of carbon dioxide in water is greater than that of other unreactive gases e g helium as more carbon dioxide dissolves in water its p co 2 rises until it equals the p co 2 of the overlying atmosphere conversely a body of water with a p co 2 greater than that of the atmosphere effluxes carbon dioxide 5 6 p co 2 is additionally affected by water temperature and salinity carbon dioxide is less soluble in warmer water than cooler water so hot water will exhibit a larger p co 2 than cold water with the same concentration of carbon dioxide p co 2 can be used to describe the inorganic carbon system of a body of water together with other parameters such as ph dissolved inorganic carbon and alkalinity together these parameters describe the concentration and speciation of inorganic carbon species co 2 aq hco 3 co 3 2 in water 6 biological processes such as respiration and photosynthesis affect and can be affected by aquatic p co 2 respiration degrades organic matter releasing co 2 into the water column and increasing p co 2 photosynthesis assimilates inorganic carbon thereby decreasing aquatic p co 2 5 notation in geochemistry edit in contrast to the partial pressures of gases which are often denoted by a lowercase letter in physical chemistry e g p o 2 p n 2 p co2 is commonly written with an uppercase letter in geochemistry the notation p co 2 with a lowercase letter is not recommended as it can be confused with the sørensen prefix p p for power as in the logarithmic p scale used in analytical chemistry to denote very low numerical values p x log 10 x as in p h log 10 h or pk log 10 k where h is the effective concentration mol l of hydronium ions in solution or more exactly its chemical activity and k corresponds to a reaction equilibrium constant in sørensen notation p co 2 log co 2 log p co2 pp co2 which can cause severe confusion about the sign of the log value to avoid such confusion a clear and unambiguous notation is necessary there are several possibilities p co2 10 3 5 bar atm 3 16 10 4 bar atm or 316 ppmv 0 0316 vol about the atmospheric co 2 concentration in early 1970 log 10 p co2 bar atm 3 5 pp co2 bar atm log 10 p co2 bar atm log 10 10 3 5 3 5 the first two notations which retain the true negative power sign when p co2 1 bar are clear whereas the third with a positive sign pp co2 which could be more simply written as p co 2 is unusual and not recommended in geochemistry because it can cause considerable confusion about the sign of the logarithm in practice negative values of log 10 p co2 partial pressure of co 2 in natural water are commonly reported in the scientific literature and in geochemistry textbooks typically ranging from 1 5 to 5 5 3 4 see also edit medecine acidosis alkalosis arterial blood gas blood gas tension hypercapnia geochemistry carbon cycle carbonate compensation depth chemical equilibrium lysocline ph xco 2 references edit dugdale dc zieve d gasometría arterial medline plus 09 01 2012 leticia godoy dias sanderson gasometria arterial artigo de revisão fevereiro 2012 archived 2014 10 17 at the wayback machine 1 2 langmuir donald 1997 aqueous environmental geochemistry 1st ed upper saddle river n j prentice hall p 600 isbn 978 0023674129 retrieved 2026 09 14 1 2 appelo c a j postma dieke 2004 06 24 geochemistry groundwater and pollution 2nd ed crc press balkema taylor francis group p 683 doi 10 1201 9781439833544 isbn 978 0 429 15232 0 1 2 millero frank j 2013 chemical oceanography 4 ed boca raton taylor francis isbn 978 1 4665 1255 9 oclc 958798815 1 2 zeebe richard e 2001 co 2 in seawater equilibrium kinetics isotopes dieter a wolf gladrow amsterdam isbn 978 0 08 052922 6 oclc 246683387 cite book cs1 maint location missing publisher link this article incorporates text by glynda rees doyle and jodie anita mccutcheon available under the cc by 4 0 license retrieved from https en wikipedia org w index php title pco2 oldid 1377256882 categories acid base chemistry analytical chemistry equilibrium chemistry units of measurement chemical oceanography limnology hidden categories articles with short description short description is different from wikidata webarchive template wayback links cs1 maint location missing publisher articles with imported creative commons attribution 4 0 text this page was last edited on 28 september 2026 at 15 13 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents pco 2 11 languages add topic