natgillin/translations-raw huggingface dataset:
However, for poorly degradable compounds and those with a low ThOD, 5-10 mg/litre can be used. In some cases, it would be advisable to run parallel series of test chemical at two different concentrations, for example, 2 and 5 mg/litre.
V nekaterih primerih je priporočljivo izvesti vzporedna niza z dvema različnima koncentracijama preskusne snovi, na primer z 2 in s 5 mg/l.
Normally, calculate the ThOD on the basis of formation of ammonium salts but, if nitrification is expected or known to occur, calculate on the basis of the formation of nitrate (ThODNO3: see Appendix 2.2).
Navadno TPK izračunamo na podlagi tvorbe amonijevih soli, če pa pričakujemo ali vemo, da bo potekala nitrifikacija, ga izračunamo na podlagi tvorbe nitrata (ThODNO3: glej Dodatek 2.2).
However, if nitrification is not complete but does occur, correct for the changes in concentration of nitrite and nitrate, determined by analysis, (see Appendix 5).
Če je nitrifikacija nepopolna, vendar se pojavi, izračunamo popravke glede na spremembe v koncentraciji nitrita in nitrata, določene z analizo (glej Dodatek 5).
If the toxicity of the test chemical is to be investigated (in the case, for example, of a previous low biodegradability value having been found), another series of bottles is necessary.
Če bomo preučevali strupenost preskusne snovi (na primer, kadar je bila predhodno določena nizka vrednost biorazgradljivosti), potrebujemo dodaten niz steklenic.
Prepare another large bottle to contain aerated mineral medium (to about one-third of its volume) plus test chemical and reference chemical at final concentrations normally the same as those in the other large bottles.
Pripravimo še eno veliko steklenico, ki vsebuje prezračen mineralni medij (do približno ene tretjine volumna) ter preskusno in referenčno snov v končnih koncentracijah, enakih tistim v drugih velikih steklenicah.
Inoculate the solutions in the large bottles with secondary effluent (one drop or about 0,05 ml, to 5 ml/litre) or with another source such as river water (see I.6.4.2.).
Raztopine v velikih steklenicah inokuliramo s sekundarnim odtokom (ena kapljica ali približno 0,05 ml do 5 ml na liter) ali drugim virom, kot je rečna voda (glej I.6.4.2).
Finally, make up the solutions to volume with aerated mineral medium using a hose which reaches down to the bottom of the bottle to achieve adequate mixing.
Nato raztopine dopolnimo do volumna s prezračenim mineralnim medijem, preko cevi, ki sega do dna steklenice, da dosežemo ustrezno mešanje.
In a typical run the following bottles are used:
V značilnem preskusu se uporabijo naslednje steklenice:
at least 10 containing test chemical and inoculum (test suspension),
najmanj 10 steklenic, ki vsebujejo preskusno snov in inokulum (preskusna suspenzija),
at least 10 containing only inoculum (inoculum blank),
najmanj 10 steklenic, ki vsebujejo le inokulum (slepi vzorec z inokulumom),
at least 10 containing reference chemical and inoculum (procedure control),
najmanj 10 steklenic, ki vsebujejo referenčno snov in inokulum (kontrola postopka),
and, when necessary, six bottles containing test chemical, reference chemical and inoculum (toxicity control).
in, kadar je potrebno, 6 steklenic, ki vsebujejo preskusno snov, referenčno snov in inokulum (kontrola strupenosti).
However, to ensure being able to identify the 10-day window, about twice as many bottles would be necessary.
Da pa bi zagotovo omogočili določitev 10-dnevnega okna, bi potrebovali še enkrat toliko steklenic.
Dispense each prepared solution immediately into the respective group of BOD bottles by hose from the lower quarter (not the bottom) of the appropriate large bottle, so that all the BOD bottles are completely filled.
Vsako pripravljeno raztopino s cevjo, ki sega v spodnjo četrtino velike steklenice (ne do dna), takoj prenesemo v BPK-steklenice ustrezne skupine, tako da so vse BPK-steklenice napolnjene do vrha.
Tap gently to remove any air bubbles.
Rahlo potrkamo po steklenici, da odstranimo vse zračne mehurčke.
Analyse the zero-time bottles immediately for dissolved oxygen by the Winkler or electrode methods.
V steklenicah za čas nič takoj določimo raztopljeni kisik z metodo po Winklerju ali z elektrodo.
The contents of the bottles can be preserved for later analysis by the Winkler method by adding manganese (II) sulfate and sodium hydroxide (the first Winkler reagent).
Vsebina steklenic se lahko shrani za poznejšo analizo po Winklerju, tako da se ji doda manganov(II) sulfat in natrijev hidroksid (prvi reagent po Winklerju).
Store the carefully stoppered bottles, containing the oxygen fixed as brown manganese (III) hydrated oxide, in the dark at 10-20 oC for no longer than 24 hours before proceeding with the remaining steps of the Winkler method.
Steklenice, ki vsebujejo kisik, fiksiran kot rjavi manganov(III) hidroksid, previdno zapremo in shranimo v temi pri 10–20 oC za največ 24 ur, preden nadaljujemo s postopkom po Winklerju.
Stopper the remaining replicate bottles ensuring that no air bubbles are enclosed, and incubate at 20 oC in the dark.
Preostale steklenice zamašimo, pri čemer zagotovimo, da v njih ni zračnih mehurčkov, in jih inkubiramo pri 20 oC v temi.
Each series must be accompanied by a complete parallel series for the determination of the inoculated blank medium.
Vsak niz mora spremljati popoln vzporedni niz za določanje slepega inokuliranega medija.
Withdraw at least duplicate bottles of all series for dissolved oxygen analysis at time intervals (at least weekly) over the 28 days incubation.
V ustreznih časovnih intervalih (najmanj tedensko) 28 dnevne inkubacije odvzamemo vzorce iz najmanj po dveh vzporednih steklenic na niz za določitev raztopljenega kisika.
Weekly samples should allow the assessment of percentage removal in a 14-day window, whereas sampling every 3-4 days should allow the 10-day window to be identified, which would require about twice as many bottles.
Tedenski vzorci bi morali omogočiti oceno odstotka odstranitve v 14-dnevnem oknu, vzorčenje na 3–4 dni pa bi moralo omogočiti določitev 10-dnevnega okna, za kar je potrebnih približno dvakrat toliko steklenic.
For N-containing test substances, corrections for uptake of oxygen by any nitrification occurring should be made.
Pri snoveh, ki vsebujejo dušik, je treba izračunati popravke za porabo kisika pri nitrifikaciji.
To do this, use the O2-electrode method for determining the concentration of dissolved oxygen and then withdraw a sample from the BOD bottle for analysis for nitrite and nitrate.
V ta namen za določitev koncentracije raztopljenega kisika uporabimo metodo s kisikovo elektrodo in nato iz BPK-steklenice odvzamemo vzorec za določitev nitrita in nitrata.
From the increase in concentration of nitrite and nitrate, calculate the oxygen used (see Annex V).
Iz povečanja koncentracije nitrita in nitrata izračunamo porabljeni kisik (glej Dodatek 5).
First calculate the BOD exerted after each time period by subtracting the oxygen depletion (mg O2/litre) of the inoculum blank from that exhibited by the test chemical.
Najprej izračunamo BPK po vsakem časovnem intervalu, tako da porabo kisika (mg O2/l) v slepem vzorcu z inokulumom odštejemo od tiste v vzorcu s preskusno snovjo.
Divide this corrected depletion by the concentration (mg/litre) of the test chemical, to obtain the specific BOD as mg oxygen per mg test chemical.
Tako popravljeno porabo delimo s koncentracijo (mg/l) preskusne snovi, da dobimo specifični BPK, izražen kot mg kisika na mg preskusne snovi.
Calculate the percentage biodegradability by dividing the specific BOD by the specific ThOD (calculated according to Appendix 2.2) or COD (determined by analysis, see Appendix 2.3), thus:
Izračunamo odstotek biorazgradljivosti, tako da specifični BPK delimo s specifičnim TPK (izračunanim v skladu z Dodatkom 2.2) ali KPK (določenim z analizo, glej Dodatek 2.3), tako je:
BOD = mg O2
BPK = mg sprejetega O2
uptake by test chemical - mg O2
pri preskusni snovi – mg sprejetega O2
% degradation = BOD mg O2
% razgradnje = BPK mg O2
/mg test chemical
/mg preskusne snovil
It should be noted that these two methods do not necessarily give same value; it is preferable to use the former method.
Opozoriti je treba, da ti dve metodi ne dasta nujno enakega rezultata; priporočena je uporaba prve metode.
Oxygen depletion in the inoculum blank should not exceed 1,5 mg dissolved oxygen/litre after 28 days.
Poraba kisika v slepem vzorcu z inokulumom po 28 dneh ne sme preseči 1,5 mg raztopljenega kisika/l.
Values higher than this require investigation of the experimental techniques.
Pri višjih vrednostih je treba preveriti preskusne tehnike.
The residual concentration of oxygen in the test bottles should not fall below 0,5 mg/litre at any time.
Koncentracija preostalega kisika v preskusnih steklenicah nikoli ne sme pasti pod 0,5 mg/l.
Such low oxygen levels are valid only if the method of determining dissolved oxygen used is capable of measuring such levels accurately.
Tako nizka raven kisika je primerna le, če se taka raven lahko točno določi z uporabljeno metodo za določanje raztopljenega kisika.
CLOSED BOTTLE TEST
PRESKUS Z ZAPRTO STEKLENICO
Initial concentration in bottle: … mg/litre
Začetna koncentracija v steklenici: ... mg/liter
ThOD or COD: … mg O2/mg test substance
TPK ali KPK: ... mg O2/mg preskusne snovi
Concentration in the reaction mixture: … mg/litre
Koncentracija v reakcijski zmesi: ... mg/liter
DO DETERMINATION
DOLOČANJE DO
Method: Winkler/electrode
Metoda: Winkler/elektroda
Flask analyses
Analize steklenic
Time of incubation (d)
Čas inkubacije (d)
Blank (without chemical)
Slepi vzorec (brez snovi)
Test chemical
Preskusna snov
Note: Similar format may be used for reference and toxicity control.
Opomba: Za referenčno snov in vzarec za kontrolo strapenosti se lahko uporabi podobna oblika.
Change in nitrate concentration (mg N/litre)
Sprememba Koncentracije nitrata (mg N/l)
Oxygen equivalent (mg/litre)
Ekvivalent kisika (mg/l)
Change in nitrite concentration (mg N/litre)
Sprememba koncentracije nitrita (mg N/l)
(iii + vi) Total oxygen equivalent (mg/litre)
(iii + vi) Skupni ekvivlent kisika (mg/l)
DO DEPLETION: % DEGRADATION
PORABA DO: % RAZGRADNJE
Depletion after n days (mg/litre)
Poraba po n dneh (mg/l)
FLASK 1: (mto - mtx) - (mbo - mbx)
STEKLENICA 1: (mto – mtx) – (mbo – mbx)
FLASK 2: (mto - mtx) - (mbo - mbx)
STEKLENICA 2: (mto – mtx) – (mbo – mbx)
FLASK 1:
STEKLENICA 1:
conc. of test × ThOD chemical
Konc. preskusne snovi × TPK snovi
FLASK 2:
STEKLENICA 2:
% D mean [7] = D1
strednja vrednost % D [7] = D1
value in the flask at time 0
vrednost v preskusni steklenici ob času 0
value in the flask at time x
vrednost v preskusni steklenici ob času x
mean blank value at time 0
srednja vrednost slepega vzorca ob času 0
mean blank value at time x
srednja vrednost slepega vzorca ob času x
Apply also correction for nitrification from iii + vi in section 6.
Upoštevamo tudi popravek za nitrifikacijo iz (iii) + (vi) v oddelku 6.
BLANK DO DEPLETIONS
PORABA DO V SLEPEM VZORCU
Oxygen consumption by blank: (mbo - mb28) mg/litre.
Poraba kisika v slepem vzorcu: (mb0 – mb28) mg/l.
This consumption is important for the validity of the test.
Ta poraba je pomembna za veljavnost preskusa.
It should be less than 1,5 mg/litre.
Mora biti manj kot 1,5 mg/l.
The oxygen uptake by a stirred solution, or suspension, of the test chemical in a mineral medium, inoculated with specially grown, unadapted micro-organisms, is measured automatically over a period of 28 days in a darkened, enclosed respirometer at 25 ± 1 oC.
V obdobju 28 dni se avtomatsko meri sprejem kisika v raztopini ali suspenziji preskusne snovi v mineralnem mediju, inokulirani s posebej gojenimi, neprilagojenimi mikroorganizmi, med stalnim mešanjem v zatemnjenem, zaprtem respirometru pri 25 ± 1 oC.
Evolved carbon dioxide is absorbed by soda lime.
Razviti ogljikov dioksid se absorbira v zmesi natrijevega in kalcijevega hidroksida.
Biodegradability is expressed as the percentage oxygen uptake (corrected for blank uptake) of the theoretical uptake (ThOD).
Biorazgradljivost se izrazi kot odstotek sprejema kisika (popravljenega glede na sprejem v slepem vzorcu) glede na teoretični sprejem (TPK).
The percentage of primary biodegradability is also calculated from supplemental specific chemical analysis made at the beginning and end of incubation and, optionally, by DOC analysis.
Lahko se izračuna tudi odstotek primarne biorazgradnje iz dopolnilne specifične kemične analize, opravljene na začetku in na koncu inkubacije, ter, neobvezno, z analizo DOC.
Automatic electrolytic BOD meter or respirometer normally equipped with six bottles, 300 ml each and equipped with cups to contain CO2 absorbent;
avtomatski elektrolitski BPK-meter ali respirometer, navadno opremljen s šestimi 300 ml-steklenicami s posodicami za CO2-absorbent;
constant temperature room and/or water-bath at 25 oC ± 1 oC or better;
prostor s konstantno temperaturo in/ali vodna kopel s temperaturo 25 oC ± 1 oC ali bolj natančno;
Prepare the following stock solutions, using analytical grade reagents and water (I.6.1.):
Pripravimo naslednje osnovne raztopine iz analitsko čistih reagentov in vode (I.6.1):
Monopotassium dihydrogen ortho phosphate, KH2PO4
Monokalijev dihidrogen ortofosfat, KH2PO4
Dipotassium monohydrogen ortho phosphate, K2HPO4
Dikalijev monohidrogen ortofosfat, K2HPO4
Disodium monohydrogen ortho phosphate dodecahydrate Na2HPO4 12 H2O
Dinatrijev monohidrogen ortofosfat dodekahidrat Na2HPO4 12 H2O
Ammonium chloride, NH4Cl
Amonijev klorid, NH4Cl
Magnesium sulphate heptahydrate, MgSO4 7 H2O
Magnezijev sulfat heptahidrat, MgSO4 7 H2O
The sludge unit must be operated according to good practice: effluents should be clear, temperature should be kept at 25 ± 2o C, pH should be 7 ± 1, sludge should settle well, sufficient aeration to keep the mixture aerobic at all times, protozoa should be present and the activity of the sludge should be tested against a reference substance at least every three months.
Enoto za blato je treba upravljati v skladu z dobro prakso: tekočina mora biti bistra, vzdrževati je treba konstantno temperaturo 25 ± 2 oC, pH mora biti 7 ± 1, blato se mora dobro posedati, prezračevanje mora biti zadostno, da je zmes ves čas aerobna, prisotne morajo biti praživali in najmanj vsake tri mesece je treba z referenčno snovjo preveriti aktivnost blata.
Do not use sludge as inoculum until after at least one month's operation, but not after more than four months.
Blata ne smemo uporabiti dokler ne preteče najmanj en mesec obdelave in ne po več kot štirih mesecih.
Thereafter, sample from at least 10 sites arregular intervals, once every three months.
Nato v rednih časovnih presledkih, enkrat na tri mesece, zbiramo vzorce na najmanj 10 mestih.
In order to maintain fresh and old sludge at the same activity, mix the filtered supernatant of an activated sludge in use with an equal volume of the filtered supernatant of a freshly collected ten-source mixture and culture the combined liquor as above.
Za vzdrževanje enake aktivnosti svežega in starega blata zmešamo filtrirani supernatant obdelovanega aktivnega blata z enakim volumnom filtriranega supernatanta sveže zbrane mešanice iz desetih virov ter nastalo zmes kultiviramo po zgornjem postopku.
Take sludge for use as inoculum 18-24 h after the unit has been fed.
Blato za inokulum odvzamemo 18–24 h po polnjenju enote.
test chemical in dilution water at 100 mg/1
Št. 1: 100 mg/l preskusne snovi v vodi za redčenje
No 2, 3 and 4: test chemical in mineral medium at 100 mg/1
Št. 2, 3 in 4: 100 mg/l preskusne snovi v mineralnem mediju
reference chemical (e.g. aniline) in mineral medium at 100 mg/1
Št. 5: 100 mg/l referenčne snovi (npr. anilin) v mineralnem mediju
Inoculate flasks No 2, 3 and 4 (test suspensions), No 5 (activity control) and No 6 (inoculum blank) with a small volume of the inoculum to give a concentration of 30 mg/1 suspended solids.
Steklenice št. 2, 3 in 4 (preskusne suspenzije), št. 5 (kontrola aktivnosti) in št. 6 (slepi vzorec z inokulumom) inokuliramo z majhno količino inokuluma, tako da bo koncentracija neraztopljenih trdnih snovi 30 mg/l.
At the end of incubation, normally 28 days, measure the pH of the contents of the flasks and determine the concentration of the residual test chemical and any intermediate and, in the case of water soluble substance, the concentration o f DOC (Appendix 2.4).
Ob koncu inkubacije, navadno 28 dni, izmerimo pH vsebine steklenic ter določimo koncentracijo ostanka preskusne snovi in kakršnega koli vmesnega produkta in, pri vodotopnih snoveh, koncentracijo DOC (Dodatek 2.4).
Take special care in the case of volatile chemicals.
Pri hlapnih snoveh moramo biti posebej previdni.
If nitrification is anticipated, determine nitrate and nitrite concentration, if possible.
Če pričakujemo nitrifikacijo, po možnosti določimo koncentracijo nitrata in nitrita.
Divide the oxygen uptake (mg) by the test chemical after a given time, corrected for that taken up by the blank inoculum conttol after the same time, by the weight of the test chemical used.
Količino kisika (mg), ki ga sprejme preskusna snov po določenem času, popravljeno glede na sprejem v slepem vzorcu za kontrolo inokuluma v istem času, delimo z uporabljeno maso preskusne snovi.
uptake by test chemical -mg O2
pri preskusni snovi -mg sprejetega O2
The percentage biodegradation is then obtained from:
Odstotek biorazgradnje se izračuna po enačbi:
% biodegradation = % ThOD = BOD mg O2
% biorazgradnje = % TPK = BPK mg O2
For mixtures, calculate the ThOD from the elemental analysis, as for simple compound.
Pri zmeseh izračunamo TPK iz elementarne analize, kakor pri enostavnih spojinah.
Use the appropriate ThOD (ThODNH4 or ThODNO3) according to whether nitrification is absent or complete (Appendix 2.2).
Uporabimo ustrezni TPK (TPKNH4 ali TPKNO3), glede na to ali nitrifikacije ni ali je popolna (Dodatek 2.2).
If however, nitrification occurs but is incomplete, make a correction for the oxygen consumed by nitrification calculated from the changes in concentrations of nitrite and nitrate (Appendix 5).
Če pa pride do nitrifikacije, vendar je nepopolna, izračunamo popravek za kisik, porabljen pri nitrifikaciji, iz sprememb v koncentraciji nitrita in nitrata (Dodatek 5).
Calculate the percentage primary biodegradation from loss of specific (parent) chemical (see 1.7.2).
Odstotek primarne biorazgradnje izračunamo iz izgube specifične (izhodne) snovi (glej 1.7.2).
If there has been a loss of test chemical in the flask No 1 measuring physico-chemical removal, report this and use the concentration of test chemical (Sb) after 28 days in this flask to calculate the percentage biodegradation.
Če je v steklenici št. 1, namenjeni merjenju fizikalno-kemijske odstranitve, prišlo do izgube preskusne snovi, to navedemo v poročilu in uporabimo koncentracijo preskusne snovi (Sb) po 28 dneh v tej steklenici za izračun odstotka biorazgradnje.
When determinations of DOC are made (optional), calculate the percentage ultimate biodegradation from:
Kadar določamo DOC (neobvezno), izračunamo odstotek popolne biorazgradnje po enačbi:
as described under point I.7.1.
kakor je opisano v točki I.7.1.
If there has been a loss of DOC in the flask No 1, measuring physico-chemical removal, use the DOC concentration in this flask to calculate the percentage biodegradation.
Če je v steklenici št. 1, namenjeni merjenju fizikalno-kemijske odstranitve, prišlo do izgube DOC, uporabimo koncentracijo DOC v tej steklenici za izračun odstotka biorazgradnje.
The oxygen uptake of the inoculum blank is normally 20-30 mg O2/1 and should not be greater than 60 mgl/l in 28 days.
Sprejem kisika v slepem vzorcu z inokulumom je navadno 20–30 mg O2/l in ne sme biti večji od 60 mg/l v 28 dneh.
Values higher than 60 mgl/l require critical examination of the data and experimental techniques.
Pri vrednostih nad 60 mg/l je treba kritično preveriti podatke in tehniko preskušanja.
If the pH value is outside the range 6-8,5 and the oxygen consumption by the test chemical is less than 60 %, the test should be repeated with a lower concentration of test chemical.
Če je pH vrednost izven območja 6–8,5 in poraba kisika pri preskusni snovi pod 60 %, je treba preskus ponoviti z manjšo koncentracijo preskusne snovi.
If the percentage degradation of aniline calculated from the oxygen consumption does not exceed 40 % after seven days and 65 % after 14 days, the test is regarded as invalid.
Če odstotek razgradnje anilina, izračunan iz porabe kisika, ne preseže 40 % po 7 dneh in 65 % po 14 dneh, se preskus šteje za neveljavnega.
An example of a data sheet is given below.
V nadaljevanju je predstavljen primer podatkovnega lista.
MITI (I) TEST
PRESKUS M.I.T.I. (I)
Stock solution concentration: mg/1 as chemical
Koncentracija osnovne raztopine: ... mg/l kot snov
Initial concentration in medium, Co: … mg/1 as chemical
Začetna koncentracija v mediju, Co: ... mg/l kot snov
Volume of reaction mixture, V: … ml
Volumen reakcijske zmesi, V: .. ml
ThOD: … mg O2/1
TPK: ... mg O2/l
Sludge sampling sites:
Mesta vzorčenja blata:
Concentration of suspended solids in activated sludge after acclimatisation with synthetic sewage = ... mg/1
Koncentracija neraztopljenih trdnih snovi v aktivnem blatu po aklimatizaciji s sintetičnim blatom = ... mg/l
Volume of activated sludge per litre of final medium = ... ml
Volumen aktivnega blata na liter končnega medija = ... ml
Concentration of sludge in final medium = ... mg/1
Koncentracija blata v končnem mediju = ... mg/l
Type of respirometer used:
Vrsta uporabljenega respirometra:
Flask 1
Steklenica 1
Flask 2
Steklenica 2
Flask 3
Steklenica 3
Mean [8]
srednja vrednost [8]
N.B.: Similar formats may be used for the reference compound.
Opomba: Za referenčno, snov se lahko uporabi padobna oblika.
Flask
Steklenica
% DOC removed
% odstranjenega DOC
Measured
Izmerjeni
Corrected
Popravljeni
Water + test substance
Voda + preskusna snov
Sludge + test substance
Blato + preskusna snov
Control blank
Slepi kontrolni vzorec
SPECIFIC CHEMICAL ANALYTICAL DATA
PODATKI SPECIFIČNE KEMIČNE ANALIZE
Residual amount of test chemical at end of test
Kabčina ostamka preskusne snovi ob koncu preskusa
blank test with water
Slepi preskus z vodo
inoculated medium
Inokulirani medij
% degradation = Sb
% razgradnje = Sb
Calculate % degradation for flasks a1, and a3 respectively
Izračunamo % razgradnje za steklenice a1, a2, a3.
BOD curve against time, if available, should be attached.
Priložiti je treba krivuljo BPK v odvisnosti od časa, če je na voljo.
ABBREVIATIONS AND DEFINITIONS
OKRAJŠAVE IN OPREDELITEV POJMOV
(See method C.6).
(Glej metodo C.6).
DOC Dissolved organic carbon is the organic carbon present in solution or that which passes through a 0,45 micrometre filter or remains in the supernatant after centrifuging at 40000 m.s-2 (±4000 g) for 15 min.
DOC Raztopljeni organski ogljik (dissolved organic carbon) je organski ogljik, ki je prisoten v raztopini ali gre skozi 0,45-mikrometrski filter ali ostane v supernatantu po 15-minutnem centrifugiranju pri 40000 m.s-2 (±4000 g).
ThOD Theoretical oxygen demand (mg) is the total amount of oxygen required to oxidise a chemical completely; it is calculated from the molecular formula (see Appendix 2.2) and is also expressed as mg oxygen required per mg test compound.
TPK Teoretična potreba po kisiku (mg) je skupna količina kisika, potrebna za popolno oksidacijo snovi; izračuna se iz molekulske formule (glej Dodatek 2.2) in se izrazi tudi v mg kisika, potrebnega za mg preskusne snovi.
ThCO 2
TCO 2
Theoretical carbon dioxide (mg) is the quantity of carbon dioxide calculated to be produced from the known or measured carbon content of the test compound when fully mineralised; also expressed as mg carbon dioxide evolved per mg test compound.
Teoretični ogljikov dioksid (mg) je količina ogljikovega dioksida, izračunana iz znane ali izmerjene vsebnosti ogljika v preskusni snovi, ki se proizvede ob popolni mineralizaciji snovi; izražena tudi v mg ogljikovega dioksida, razvitega na mg preskusne snovi.
TOC Total organic carbon of a sample is the sum of the organic carbon in solution and in suspension.
TOC Skupni organski ogljik vzorca je vsota organskega ogljika v raztopini in suspenziji (total organic carbon).
IC Inorganic carbon
IC Anorganski ogljik (inorganic carbon).