natgillin/translations-raw huggingface dataset:
If needed, use one vessel to check the possible inhibitory effect of the test chemical by inoculating a solution containing, in the mineral medium, comparable concentrations of both the test and a reference chemical.
Če je potrebno, uporabimo eno posodo za preverjanje morebitnega inhibitornega učinka preskusne snovi, tako da inokuliramo raztopino, ki vsebuje primerljivi koncentraciji preskusne in referenčne snovi v mineralnem mediju.
Also, if required, set up a further, sterile flask to check whether the test chemical is degraded abiotically by using an uninoculated solution of the chemical (see I.6.6).
Če je potrebno pripravimo tudi sterilni vzorec za preverjanje, ali se preskusna snov razgrajuje abiotsko, tako da uporabimo neinokulirano raztopino snovi (glej I.6.6).
Additionally, if the test chemical is suspected of being significantly adsorbed on to glass, sludge, etc., make a preliminary assessment to determine the likely extent of adsorption and thus the suitability of the test for the chemical (see Table 1).
Če sumimo, da se preskusna snov znatno adsorbira na steklo, blato itd., s predhodnim preskusom določimo verjetno stopnjo adsorpcije in s tem primernost preskusa za snov (glej tabelo 1).
Set up a flask containing the test substance, inoculum and sterilising agent.
Pripravimo erlenmajerico s preskusno snovjo, inokulumom in sterilizacijskim sredstvom.
Make up the volumes in all flasks to 11 with mineral medium and, after mixing, take a sample from each flask to de.termine the initial concentration of DOC (see Appendix 2.4).
Vse erlenmajerice dopolnimo z mineralnim medijem do 1 l, premešamo in iz vsake erlenmajerice vzamemo vzorec za določitev začetne koncentracije DOC (glej Dodatek 2.4).
Cover the openings of the flasks, e.g. with aluminium foil, in such a way as to allow free exchange of air between the flask and the surrounding atmosphere.
Odprtine erlenmajeric pokrijemo, npr. z aluminijasto folijo, tako da je omogočena prosta izmenjava zraka med erlenmajerico in ozračjem.
Then insert the vessels into the shaking machine for starting the test.
Erlenmajerice postavimo v stresalnik in tako začnemo preskus.
Number of flasks in typical run
Število steklenic v značilnem preskusu
Flasks 1 and 2: Test suspension
Steklenici 1 in 2: Preskusna suspenzija
Flasks 3 and 4: Inoculum blank
Steklenici 3 in 4: Slepi vzorec z inokulumom
Flask 5: Procedure control
Steklenica 5: Vzorec za kontrolo postopka
See also I.6.7.
Glej tudi I.6.7.
Throughout the test, determine the concentrations of DOC in each flask in duplicate at known time intervals, sufficiently frequently to be able to determine the start of the 10-day window and the percentage removal at the end of the 10-day window.
Ves čas preskusa v znanih časovnih intervalih določamo koncentracijo DOC v vsaki steklenici v podvojenih meritvah, in sicer dovolj pogosto, da lahko določimo začetek 10-dnevnega okna in odstotek odstranitve na koncu 10-dnevnega okna.
Take only the minimal volume of test suspension necessary for each determination.
Odvzamemo le najmanjši volumen preskusne suspenzije, potreben za vsako določitev.
Before sampling make good evaporation losses from the flasks by adding dilution water (I.6.1) in the required amount if necessary.
Če je potrebno, pred vzorčenjem nadomestimo izgube zaradi izhlapevanja, tako da dodamo ustrezno količino vode za redčenje (I.6.1).
Mix the culture medium thoroughly before withdrawing a sample and ensure that material adhering to the walls of the vessels is dissolved or suspended before sampling.
Pred odvzemom vzorca medij temeljito premešamo in zagotovimo, da se material, prilepljen na steno posode, raztopi ali suspendira.
Membrane-filter or centrifuge (see Appendix 2..4) immediately after the sample has been taken.
Vzorce takoj po odvzemu membransko filtriramo ali centrifugiramo (glej Dodatek 2.4).
Analyse the filtered or centrifuged samples on the same day, otherwise store at 2-4 oC for a maximum of 48 h, or below - 18 oC for a longer period.
Filtrirane ali centrifugirane vzorce analiziramo isti dan ali pa jih shranimo pri temperaturi 2–4 oC za največ 48 ur ali pod –18 oC za daljše obdobje.
Treatment of results
Obdelava rezultatov
Calculate the percentage degradation at time t as given under I.7.1 (DOC determination) and, optionally, under I.7.2 (specific analysis).
Izračunamo odstotek razgradnje ob času t iz I.7.1 (Določanje DOC) in, neobvezno, iz I.7.2 (specifična analiza).
Record all results on the data sheets provided.
Vse rezultate zapišemo na predvidene podatkovne liste.
Validity of results
Veljavnost rezultatov
See I.5.2.
Glej I.5.2.
See I.8.
Glej 1.8.
DATA SHEET
PODATKOVNI LIST
An example of a data sheet is given hereafter.
V nadaljevanju je predstavljen primer podatkovnega lista.
DOC DIE-AWAY TEST
PRESKUS UPADANJA DOC
LABORATORY
LABORATORIJ
DATE AT START OF TEST
DATUM ZAČETKA PRESKUSA
TEST SUBSTANCE
PRESKUSNA SNOV
Stock solution concentration: … mg/1 as chemical
Koncentracija osnovne raztopine: ... mg/l kot snov
Initial concentration in medium, to: … mg/1 as chemical
Začetna koncentracija v mediju, to: ... mg/l kot snov
Treatment given:
Obdelava:
Pre-conditioning, if any:
Aklimatizacija, če je bila opravljena:
Concentration of suspended solids in reaction mixture: mg/1
Koncentracija neraztopljenih trdnih snovi v reakcijski zmesi: ... mg/l
CARBON DETERMINATIONS
DOLOČITVE OGLJIKA
Carbon analyser:
Analizator ogljika:
Flask nr
Št. steklenice
DOC after n-days (mg/l)
DOC po n dneh (mg/l)
Test chemical plus inoculum
Preskusna snov in inokulum
a, mean
Spr.
b, men
b, srednja vrednost
Blank inoculum without test chemical
Slepi vzorec z inokulumom in brez preskusne snovi
C, mean Cc(t)
c, srednja vrednost Cc(t)
d, mean
d, srednja vrednost
EVALUATION OF RAW DATA
VREDNOTENJE NEOBDELANIH PODATKOV
% degradation afer n days
% razgradnje po n dneh
0Note: similar formats may be used for the reference chemical and toxicity controls.
0Opomba: za referenčno snov in vzorce za kontrolo strupensosti se lahko uporabi podobna oblika.
ABIOTIC CONTROL (optional)
ABIOTSKA KONTROLA (neobvezno)
Time (days)
Čas (dni)
DOC conc. (mg/l) in sterile control
DOC (mg/l) v sterilnih kontrolnih vzorcih
SPECIFIC CHEMICAL ANALYSIS (optional)
SPECIFIČNA KEMIJSKA ANALIZA (neobvezno)
residual amount of test chemical at end of test (mg/l)
Kakiāna ostarika preskusne snovi ob koncu preskusa
% primary degradation
% primarne razgradnje
Sterile control
Sterilni kontrolni vzorec
Inoculated test medium
Inokulirani preskusni modij
A measured volume of mineral medium containing a known concentration of the test substance (10-40 mg DOC/litre) as the nominal sole source of organic carbon is inoculated with 0,5 ml effluent per litre of medium.
Izmerjeni volumen mineralnega medija, ki vsebuje znano koncentracijo preskusne snovi (10–40 mg DOC/l) kot edinega vira organskega ogljika, se inokulira z 0,5 ml odtoka na liter medija.
The mixture is aerated in the dark or diffused light at 22 ± 2 oC.
Zmes se prezračuje v temi ali na razpršeni svetlobi pri 22 ± 2 oC.
Conical flasks, e.g. 250 ml to 2 litres, depending on the volume needed for DOC analysis;
Erlenmajerice, npr. 250 ml do 2 l, odvisno od volumna, potrebnega za analizo DOC;
shaking machine — to accommodate the conical flasks, either with automatic temperature control or used in a constant temperature room, and of sufficient power to maintain aerobic conditions in all flasks;
stresalnik – primeren za erlenmajerice, bodisi z avtomatskim uravnavanjem temperature bodisi v prostoru s konstantno temperaturo in dovolj močan, da vzdržuje aerobne pogoje v vseh erlenmajericah;
Mix 10 ml of solution (a) with 80 ml dilution water, add 1 ml of solutions (b) to (d) and make up to 1 litre with dilution water.
Zmešamo 10 ml raztopine (a) in 800 ml vode za redčenje, dodamo po 1 ml raztopin (b) do (d) in dopolnimo z vodo za redčenje do 1 litra.
This method uses only 0,5 ml effluent/litre as inoculum and therefore the medium may need to be fortified with trace elements and growth factors.
Pri tej metodi se za inokulum uporabi le 0,5 ml odtoka/liter, zato bo medij morda treba okrepiti z elementi v sledeh in rastnimi faktorji.
This is done by adding 1 ml each of the following solutions per litre of final medium:
To se stori tako, da se na liter končnega medija doda po 1 ml vsake od naslednjih raztopin:
Trace element solution:
Raztopine elementov v sledeh:
Boric acid, H3BO3
Borova kislina, H3BO3
Ammonium heptamolybdate (NH4)6 Mo7O24
Amonijev heptamolibdat (NH4)6 Mo7O24
Fe-chelate (FeCl3 ethylenediamine-tetra-acetic acid)
Fe-helat (FeCl3 etilendiamin-tetra-ocetna kislina)
Dissolve in, and make up to 1000 ml with dilution water
Raztopimo v vodi za redčenje in dopolnimo z vodo za redčenje do 1000 ml.
Vitamin solution:
Raztopina vitaminov
Dissolve the yeast extract in 100 ml water.
Kvasni ekstrakt raztopimo v 100 vode.
Sterilise by passage through a 0,2 micron membrane, or make up freshly.
Steriliziramo s filtriranjem skozi 0,2-mikronsko membrano ali pripravimo sveže.
The inoculum is derived from the secondary effluent of a treatment plant or laboratory scale unit receiving predominantly domestic sewage.
Inokulum se lahko pridobi iz sekundarnega odtoka iz čistilne naprave ali laboratorijske enote, ki prejema predvsem gospodinjske odplake.
See I.6.4.2. and I.6.5.
Glej I.6.4.2 in I.6.5.
0,5 ml per litre of mineral medium is used.
Uporabi se 0,5 ml na liter mineralnega medija.
As an example, introduce 800 ml portions of mineral medium into 2-litre conical flasks and add sufficient volumes of stock solutions of the test and reference substances to separate flasks to give a concentration of chemical equivalent to 10-40 mg DOC/litre.
Kot primer, v 2-litrske erlenmajerice damo po 800 ml mineralnega medija in v posamezne erlenmajerice dodamo ustrezno količino osnovne raztopine preskusne ali referenčne snovi, da bo koncentracija snovi enakovredna 10–40 mg DOC/liter.
Check the pH value and adjust, if necessary, to 7,4.
Preverimo pH vrednost in jo po potrebi uravnamo na 7,4.
Inoculate the flasks with sewage effluent at 0,5 ml/litre (see I.6.4.2).
Erlenmajerice inokuliramo s komunalno odplako v koncentraciji 0,5 ml/liter (glej I.6.4.2).
Make up the volumes in all flasks to 1 litre with mineral medium and, after mixing, take a sample from each flask to determine the initial concentration of DOC (see Appendix 2.4).
Vse erlenmajerice dopolnimo z mineralnim medijem do 1 litra, premešamo in iz vsake erlenmajerice vzamemo vzorec za določitev začetne koncentracije DOC (glej Dodatek 2.4).
Flasks 1 and 2: test suspension
Steklenici 1 in 2: Preskusna suspenzija
Flasks 3 and 4: inoculum blank
Steklenici 3 in 4: Slepi vzorec z inokulumom
Flask 5: procedure control
Steklenica 5: Vzorec za kontrolo postopka
and preferably and when necessary:
po možnosti in kadar je potrebno:
Flask 6: abiotic sterile control
Steklenica 6: Abiotski sterilni kontrolni vzorec
Flask 7: adsorption control
Steklenica 7: Vzorec za kontrolo adsorpcije
Flask 8: toxicity control
Steklenica 8: Vzorec za kontrolo strupenosti
See also 1.6.7.
Glej tudi 1.6.7.
Membrane-filter or centrifuge (see Appendix 2.4) immediately after the sample has been taken.
Vzorce takoj po odvzemu membransko filtriramo ali centrifugiramo (glej Dodatek 2.4).
Analyse the filtered or centrifuged samples on the same day, otherwise store at 2-4 oC for a maximum of 48 h, or below 18 oC for a longer period.
Filtrirane ali centrifugirane vzorce analiziramo isti dan ali pa jih shranimo pri temperaturi 2–4 oC za največ 48 ur ali pod –18 oC za daljše obdobje.
An example of a data sheet is given hereafter
V nadaljevanju je predstavljen primer podatkovnega lista.
MODIFIED OECD SCREENING TEST
PRILAGOJENI PRESEJALNI PRESKUS OECD
Stock solution concentration: … mg/litre as chemical
Koncentracija osnovne raztopine: ... mg/l kot snov
Initial concentration in medium, to: … mg/litre as chemical
Začetna koncentracija v mediju, to: ... mg/l kot snov
A measured volume of inoculated mineral medium containing a known concentration of the test chemical (10-20 mg DOC or TOC/l) as the nominal sole source of organic carbon is aerated by the passage of carbon, dioxide-free air at a controlled rate in the dark or in diffuse light.
Izmerjeni volumen inokuliranega mineralnega medija, ki vsebuje znano koncentracijo preskusne snovi (10–20 mg DOC ali TOC/l) kot edinega vira organskega ogljika, se prezračuje z uvajanjem zraka brez ogljikovega dioksida z nadzorovano hitrostjo v temi ali na razpršeni svetlobi.
Degradation is followed over 28 days by determining the carbon dioxide produced, which is trapped in barium or sodium hydroxide and which is measured by titration of the residual hydroxide or as inorganic carbon.
Razgradnja se spremlja 28 dni z določanjem proizvedenega ogljikovega dioksida, ki se ujame v barijev ali natrijev hidroksid in izmeri s titracijo preostalega hidroksida ali kot anorganski ogljik.
The amount of carbon dioxide produced from the test chemical (corrected for that derived from the blank inoculum) is expressed as a percentage of ThCO2.
Količina ogljikovega dioksida, proizvedenega iz preskusne snovi (popravljena glede na slepi vzorec z inokulumom), se izrazi kot odstotek TCO2.
The degree of biodegradation may also be calculated from supplemental DOC analysis made at the beginning and end of incubation.
Stopnja biorazgradnje se lahko izračuna tudi iz dopolnilne analize DOC, izvedene na začetku in na koncu inkubacije.
Flasks, 2-5 litres, each fitted with an aeration tube reaching nearly the bottom of the vessel and an outlet;
Buče, 2–5 litrov, vsaka opremljena s prezračevalno cevjo, ki sega skoraj do dna bučke, in odvodno odprtino;
magnetic stirrers, when assessing poorly soluble chemicals;
magnetna mešala, kadar se preskušajo slabo topne snovi;
gas-absorption bottles;
steklenice za absorpcijo plina;
device for controlling and measuring airflow;
naprava za uravnavanje in merjenje zračnega pretoka;
apparatus for carbon dioxide scrubbing, for preparation of air which is free from carbon dioxide; alternatively, a mixture of CO2-free oxygen and CO2-free nitrogen, from gas cylinders, in the correct proportions (20 % O2: 80 % N2) may be used;
aparatura za izpiranje ogljikovega dioksida, za pripravo zraka brez ogljikovega dioksida; lahko pa se uporabi zmes kisika brez CO2 in dušika brez CO2 iz plinskih jeklenk v pravem razmerju (20 % O2 in 80 % N2);
device for determination of carbon dioxide, either titrimetrically or by some form of inorganic carbon analyser;
naprava za določanje ogljikovega dioksida, bodisi titrimetrično ali s kako obliko analizatorja anorganskega ogljika;
membrane filtration device (optional);
naprava za membransko filtracijo (neobvezno);
DOC analyser (optional).
analizator DOC (neobvezno).
As an example the following volumes and weights indicate the values for 5-litre flasks containing 3 l of suspension.
Naslednji volumni in mase se na primer nanašajo na 5-litrske steklenice, ki vsebujejo 3 l suspenzije.
If smaller volumes are used modify the values accordingly, but ensure that the carbon dioxide formed can be measured accurately.
Če se uporabijo manjši volumni, je treba vrednosti ustrezno spremeniti, vendar hkrati zagotoviti točno merjenje nastalega ogljikovega dioksida.
To each 5-litre flask add 2400 ml mineral medium.
V vsako 5-litrsko steklenico damo 2400 ml mineralnega medija.
Add an appropriate volume of the prepared activated sludge (see I.6.4.1 and I.6.5) to give a concentration of suspended solids of not more than 30 mg/l in the final 3 l of inoculated mixture.
Dodamo ustrezen volumen pripravljenega aktivnega blata (glej I.6.4.1 in I.6.5), da bo v končnih 3 l inokulirane zmesi koncentracija neraztopljenih trdnih snovi največ 30 mg/l.
Alternatively first dilute the prepared sludge to give a suspension of 500-1000 mg/l in the mineral medium before adding an aliquot to the contents of the 5 litre flask to attain a concentration of 30 mg/l; this ensures greater precision.
Druga možnost je, da pripravljeno blato najprej razredčimo z mineralnim medijem, da dobimo suspenzijo 500–1000 mg/l, nato dodamo ustrezen alikvot vsebini 5-litrske steklenice, da dobimo koncentracijo 30 mg/l; ta način zagotavlja večjo natančnost.
Other sources of inoculum may be used (see I.6.4.2.).
Lahko se uporabijo drugi viri inokuluma (glej I.6.4.2).
Aerate these inoculated mixtures with CO2-free air overnight to purge the system of carbon dioxide.
Te inokulirane zmesi čez noč prezračujemo z zrakom brez CO2, da iz sistema izperemo ogljikov dioksid.
Add the test material and reference substance, separately, as known volume of stock solutions, to replicate flasks to yield concentrations, contributed by the added chemicals, of 10 to 20 mg DOC or TOC/l; leave some flasks without addition of chemicals as inoculum controls.
V vzporedne steklenice dodamo ločeno preskusno snov in referenčno snov, kot znani volumen osnovnih raztopin, tako da bo dobljena koncentracija DOC ali TOC, ki ga prispeva dodana snov, 10 do 20 mg/l; za kontrolo inokuluma v nekaj steklenic ne dodamo snovi.
Add poorly soluble test substances directly to the flasks on a weight or volume basis or handle as described in Appendix 3.
Slabo topne preskusne snovi dodamo neposredno v steklenice, na podlagi mase ali volumna, ali ravnamo z njimi, kakor je opisano v Dodatku 3.
If required, use one flask to check the possible inhibitory effect of the test chemical by adding both the test and reference chemicals at the same concentrations as present in the other flasks.
Če je potrebno, uporabimo eno steklenico za preverjanje morebitnega inhibitornega učinka preskusne snovi, tako da vanjo damo preskusno in referenčno snov v koncentracijah, enakih koncentracijam v drugih steklenicah.
Also, if required, use a sterile flask to check whether the test chemical is degraded abiotically by using an uninoculated solution of the chemical (see I.6.6).
Če je potrebno pripravimo tudi sterilni vzorec za preverjanje, ali se preskusna snov razgrajuje abiotsko, tako da uporabimo neinokulirano raztopino snovi (glej I.6.6).
Sterilise by the addition of a toxic substance at an appropriate concentration.
Steriliziramo z dodatkom strupene snovi v primerni koncentraciji.
Make up the volumes of suspensions in all flasks to 3 l by the addition of mineral medium previously aerated with CO2-free air.
Suspenzije v vseh erlenmajericah dopolnimo do 3 l z mineralnim medijem, predhodno prezračevanim z zrakom brez CO2.
Optionally, samples may be withdrawn for analysis of DOC (see Appendix 2.4.) and/or specific analysis.
Po izbiri lahko vzamemo vzorce za analizo DOC (glej Dodatek 2.4) in/ali specifično analizo.
Connect the absorption bottles to the air outlets of the flasks.
Na odvodne odprtine erlenmajeric priključimo absorpcijske steklenice.
If barium hydroxide is used, connect three absorption bottles, each containing 100 ml of 0,0125 M barium hydroxide solution, in series to each 5-litre flask.
Če uporabimo barijev hidroksid, na vsako 5-litrsko erlenmajerico zaporedno priključimo po tri absorpcijske steklenice s po 100 ml 0,0125 M raztopine barijevega hidroksida.
The solution must be free of precipitated sulphate and carbonate and its strength must be determined immediately before use.
V raztopini ne sme biti oborjenega sulfata in karbonata in tik pred uporabo je treba določiti njeno koncentracijo.
If sodium hydroxide is used, connect two traps, the second acting as a control to demonstrate that all the carbon dioxide was absorbed in the first.
Če uporabimo natrijev hidroksid, priključimo dva lovilnika, drugega za potrditev, da se je v prvem absorbiral ves ogljikov dioksid.
Absorption bottles fitted with serum bottle closures are suitable.
Primerne so absorpcijske steklenice, opremljene z zapirali za serumske steklenice.
Add 200 ml 0,05 M sodium hydroxide to each bottle, which is sufficient to absorb the total quantity of carbon dioxide evolved when the test chemical is completely degraded.
V vsako steklenico dodamo 200 ml 0,05 M natrijevega hidroksida, kar je dovolj za absorpcijo celotne količine ogljikovega dioksida, ki se razvije pri popolni razgradnji preskusne snovi.
The sodium hydroxide solution, even when freshly prepared, will contain traces of carbonates; this is corrected by deduction of the carbonate in the blank.
Raztopina natrijevega hidroksida vsebuje sledi karbonatov, tudi ko je sveže pripravljena; to se popravi z odštetjem količine ogljika v slepem vzorcu.
Number of flasks in a typical run
Število steklenic v značilnem preskusu
and, preferably and when necessary:
ter po možnosti in kadar je potrebno:
Flask 6: Abiotic sterile control
Steklenica 6: Abiotski sterilni kontrolni vzorec
Flask 7: Toxicity control
Steklenica 7: Vzorec za kontrolo strupenosti
Start the test by bubbling CO2-free air through the suspensions at a rate of 30-100 ml/min.
Preskus pričnemo s črpanjem zraka brez CO2 skozi suspenzije s hitrostjo 30–100 ml/min.
Take samples of the carbon dioxide absorbent periodically for analysis of the CO2-content.
Periodično odvzamemo vzorce absorbenta ogljikovega dioksida za analizo vsebnosti CO2.
During the first ten days it is recommended that analyses should be made every second or third day and then every fifth day until the 28th day so that the 10-day window period can be identified.
Prvih deset dni je priporočljivo analize izvesti vsak drugi ali tretji dan, nato pa vsak peti dan do 28. dne, da se lahko določi 10-dnevno okno.
On the 28th day, withdraw samples (optionally) for DOC and/or specific analysis, measure the pH of the suspensions and add 1 ml of concentrated hydrochloric acid to each flask; aerate the flasks overnight to drive off the carbon dioxide present in the test suspensions.
Osemindvajseti dan odvzamemo vzorce (neobvezno) za DOC in/ali specifično analizo, izmerimo pH suspenzij in dodamo po 1 ml koncentrirane klorovodikove kisline v vsako steklenico; steklenice čez noč prezračujemo, da iz preskusnih suspenzij izženemo ves ogljikov dioksid.
On day 29 make the last analysis of evolved carbon dioxide.
Devetindvajseti dan izvedemo zadnjo analizo razvitega ogljikovega dioksida.
On the days of measurement of CO2, disconnect the barium hydroxide absorber closest to the flask and titrate the hydroxide solution with HCl 0,05 M using phenolphthalein as the indicator.
Ob dnevih, ko merimo CO2, odklopimo steklenici najbližji absorber z barijevim hidroksidom in raztopino hidroksida titriramo z 0,05 M HCl ob fenolftaleinu kot indikatorju.
Move the remaining absorbers one place closer to the flask and place a new absorber containing 100 ml fresh 0,0125 M barium hydroxide at the far end of the series.
Preostale absorberje prestavimo za eno mesto bliže steklenici, na konec verige pa priključimo nov absorber s 100 ml svežega 0,0125 M barijevega hidroksida.
Make titrations as needed, for example, when substantial precipitation is seen in the first trap and before any is evident in the second, or at least weekly.
Titriramo po potrebi, na primer, ko opazimo znatno obarjanje v prvem lovilniku in preden se obarjanje začne v drugem, ali najmanj enkrat na teden.
Alternatively, with NaOH as absorbent, withdraw with a syringe a small sample (depending on the characteristics of the carbon analyser used) of the sodium hydroxide solution in the absorber nearer to the flask.
Kadar kot absorbent uporabimo natrijev hidroksid, z brizgo odvzamemo majhen vzorec (odvisno od lastnosti uporabljenega analizatorja ogljika) raztopine natrijevega hidroksida iz absorberja, ki je najbliže steklenici.
Inject the sample into the IC part of the carbon analyser for analysis of evolved carbon dioxide directly.
Vzorec injiciramo v IC-del analizatorja ogljika za neposredno analizo razvitega ogljikovega dioksida.
Analyse the contents of the second trap only at the end of the test to correct for any carryover of carbon dioxide.
Vsebino drugega lovilnika analiziramo šele ob koncu preskusa, da upoštevamo popravke zaradi morebitnega prehajanja ogljikovega dioksida naprej.
The amount of CO2 trapped in an absorber when titrated is given by:
Količina v absorberju ujetega CO2, določena s titracijo, se izračuna po:
= (100 × CB - 0,5 × V × CA) × 44
= (100 × CB – 0,5 × V x CA) × 44
V volume of HCl used for titration of the 100 ml in the absorber (ml)
V volumen HCl, porabljen za titracijo 100 ml absorbenta (ml),
concentration of the barium hydroxide solution (M)
koncentracija raztopine barijevega hidroksida (M),