natgillin/translations-raw huggingface dataset:
Heat the wine to 80 °C with the heating mantle, distil and collect 45 to 50 ml of the distillate.
Vino z grelno mrežico segrejemo na 80 °C, destiliramo in zberemo od 45 do 50 ml destilata.
injector temperature: 200 °C,
temperatura injektorja: 200 °C,
column temperature: 130 °C,
temperatura kolone: 130 °C,
helium carrier gas flow rate: 20 ml per minute.
hitrost pretoka nosilnega plina helija: 20 ml na minuto.
With the microsyringe, introduce a volume of the standard solution such that the peak corresponding to the allyl isothiocyanate can easily be identified on the gas chromatogram.
Z mikrobrizgo nanesemo prostornino standardne raztopine, tako da moremo zlahka določiti vršno vrednost na plinskem kromatogramu, ki ustreza alilizotiocianatu.
Similarly introduce an aliquot of the distillate into the chromatograph.
Prav tako dodamo alikvot destilata v kromatograf.
Check that the retention time of the peak obtained corresponds with that of the peak of allyl isothiocyanate.
Preverimo, ali retencijski čas dobljene vršne vrednosti ustreza vršni vrednosti alilizotiocianata.
Under the conditions described above, compounds naturally present in the wine will not produce interfering peaks on the chromatogram of the sample solution.
V zgoraj opisanih razmerah spojine, ki so naravno navzoče v vinu, ne povzročijo interferenčnih vršnih vrednosti na kromatogramu vzorčne raztopine.
Apparatus for distillation under a current of nitrogen
Aparatura za destilacijo pod tokom dušika
intake
Dovod N2
Flowmeter
Merilnik pretoka
Heating mantle
Grelna mrežica
Tube for gas dispersion
Cevka za razpršitev plinov
SPECIAL ANALYSIS METHODS FOR RECTIFIED CONCENTRATED GRAPE MUST
POSEBNE ANALIZNE METODE ZA REKTIFICIRANI ZGOŠČENI GROZDNI MOŠT
Total cations
Skupni kationi
The test sample is treated by a strongly acid cation exchanger.
Testni vzorec obdelamo z zelo kislim kationskim izmenjevalcem.
The cations are exchanged with H+.
Kationi se izmenjajo s H+.
Total cations are expressed by the difference between the total acidity of the effluent and that of the test sample.
Skupni kationi so izraženi z razliko med skupno kislostjo eluata in skupno kislostjo testnega vzorca.
Glass column of internal diameter 10 to 11 mm and length approximately 300 mm, fitted with a drain tap.
Steklena kolona z notranjim premerom od 10 do 11 mm, dolga približno 300 mm, na kateri je odvod.
pH meter with a scale graduated at least in 0,1 pH units.
pH meter s skalo z razdelki vsaj 0,1 pH enot.
Electrodes:
Elektrode:
glass electrode, kept in distilled water,
steklena elektroda, shranjena v destilirani vodi,
calomel/saturated potassium chloride reference electrode, kept in a saturated solution of potassium chloride, or
kalomelova (nasičeni kalijev klorid) referenčna elektroda, shranjena v nasičeni raztopini kalijevega klorida, ali
a combined electrode, kept in distilled water,
kombinirana elektroda, shranjena v destilirani vodi.
Strongly acid cation exchange resin in H + form pre-swollen by soaking in water overnight.
Močno kisla kationska izmenjevalna smola v obliki H+, ki smo jo čez noč pustili v vodi, da nabrekne.
Sodium hydroxide solution, 0,1 M.
Raztopina natrijevega hidroksida, 0,1 M.
Paper pH indicator.
Papirni indikator pH.
Preparation of sample
Priprava vzorca
Use the solution obtained by diluting the rectified concentrated must to 40 % (m/v): introduce 200 g of accurately weighed rectified concentrated must into a 500 ml volumetric flask. Make up to the mark with water and homogenise.
Uporabimo raztopino, ki smo jo pripravili z redčenjem rektificiranega zgoščenega mošta na 40 % (m/v): v bučko odtehtamo 200 g natančno stehtanega rektificiranega zgoščenega mošta, dolijemo vodo do oznake za 500 ml in homogeniziramo.
Preparation of the ion exchange column
Priprava ionske izmenjevalne kolone
Ion exchange
Izmenjava ionov
Pass 100 ml of the rectified concentrated must solution prepared as in paragraph 4.1 through the column at the rate of one drop every second.
100 ml raztopine rektificiranega zgoščenega mošta, ki jo pripravimo v skladu s točko 4.1, prelijemo skozi kolono s hitrostjo ene kapljice na sekundo.
Collect the effluent in a beaker.
Eluat zberemo v čaši.
Rinse the column with 50 ml of distilled water.
Kolono izplaknemo s 50 ml destilirane vode.
Titrate the acidity in the effluent (including the rinse water) with the 0,1 M sodium hydroxide solution until the pH is 7 at 20 °C.
Kislino v eluatu (vključno z vodo za izplakovanje) titriramo z 0,1 M raztopino natrijevega hidroksida, dokler ni pH 7 pri 20 °C.
The alkaline solution should be added slowly and the solution continuously shaken.
Alkalno raztopino moramo dodajati počasi in raztopino nepretrgoma stresati.
Let n ml be the volume of 0,1 M sodium hydroxide solution used.
Z n ml označimo prostornino uporabljene 0,1 M raztopine natrijevega hidroksida.
Expression of the results
Izražanje rezultatov
The total cations are expressed in milliequivalents per kilogram of total sugar to one decimal place.
Skupne katione izrazimo v miliekvivalentih na kilogram skupnega sladkorja na eno decimalno mesto natančno.
Acidity of the effluent expressed in milliequivalents per kilogram of rectified concentrated must:
Kislost eluata, izražena v miliekvivalentih na kilogram rektificiranega zgoščenega mošta:
Total acidity of the rectified concentrated must in milliequivalents per kilogram: a.
Skupne kisline rektificiranega zgoščenega mošta v miliekvivalentih na kilogram: a.
Total cations in milliequivalents per kilogram of total sugars:
Skupni kationi v miliekvivalentih na kilogram skupnih sladkorjev:
P = percentage concentration (m/m) of total sugars.
P = odstotek koncentracije (m/m) skupnih sladkorjev.
Conductivity
Elektroprevodnost
The electrical conductivity of a column of liquid defined by two parallel platinum electrodes at its ends is measured by incorporating it in one arm of a Wheatstone bridge.
Elektroprevodnost tekočine v koloni, opredeljeno z dvema vzporednima platinskima elektrodama na obeh koncih, merimo tako, da jo priklopimo v eno vejo Wheatstonovega merilnega mostiča.
The conductivity varies with temperature and it is therefore expressed at 20 °C.
Elektroprevodnost se spreminja s temperaturo in jo izražamo pri 20 °C.
Conductivity meter enabling measurements of conductivity to be made over a range from 1 to 1000 microsiemens per cm (µS cm–1).
Merilnik elektroprevodnosti, ki omogoča merjenje v razponu od 1 do 1000 mikrosimensov na cm (µScm–1).
Waterbath for bringing the temperature of samples to be analysed to approximately 20 °C (20 ± 2 °C).
Vodna kopel za vzpostavitev temperature vzorcev za analizo pri približno 20 °C (20 ± 2 °C).
Demineralised water with specific conductivity below 2 µS cm–1 at 20 °C.
Demineralizirana voda s specifično elektroprevodnostjo pod 2 µScm–1 pri 20 °C.
Reference solution of potassium chloride
Referenčna raztopina kalijevega klorida.
Preparation of the sample to be analysed
Priprava vzorca za analizo
Use the solution with a total sugar concentration of 25 % (m/m) (25° Brix): weigh a mass equal to 2500/P and make up to 100 g with water (paragraph 3.1), where P = percentage (m/m) concentration of total sugars in the rectified concentrated must.
Uporabimo raztopino s koncentracijo skupnega sladkorja 25 % (m/m) (25° Brix): stehtamo maso 2500/P in dopolnimo z vodo do 100 g (točka 3.1), pri čemer je P odstotek koncentracije (m/m) skupnih sladkorjev v rektificiranem zgoščenem moštu.
Determination of conductivity
Določitev elektroprevodnosti
Bring the sample to be analysed to 20 °C by immersion in a waterbath.
Vzorec za analizo segrejemo na 20 °C, tako da ga potopimo v vodno kopel.
Maintain the temperature to within ± 0,1 °C.
Temperaturo ohranjamo v okviru ± 0,1 °C.
Rinse the conductivity cell twice with the solution to be examined.
Elektroprevodnostno celico izplaknemo dvakrat z raztopino za analizo.
Measure the conductivity and express the result in µS cm–1.
Izmerimo elektroprevodnost in rezultat izrazimo v µScm–1.
The result is expressed in microsiemens per cm (µScm–1) at 20 °C to the nearest whole number for the 25 % (m/m) (25° Brix) solution of rectified concentrated must.
Rezultat izrazimo v mikrosimensih na cm (µScm–1) pri 20 °C, zaokroženo na najbližje celo število, za 25 % (m/m) (25° Brix) raztopino rektificiranega zgoščenega mošta.
Hydroxymethylfurfural (HMF)
Hidroksimetilfurfural (HMF)
Principle of the methods
Princip metod
Colorimetric method
Kolorimetrična metoda
Aldehydes derived from furan, the main one being hydroxymethylfurfural, react with barbituric acid and paratoluidine to give a red compound which is determined by colorimetry at 550 nm.
Aldehidi, pridobljeni iz furana, od katerih je glavni hidroksimetilfurfural, reagirajo z barbiturno kislino in paratoluidinom ter dajo rdečo spojino, ki jo določimo s kolorimetrijo pri 550 nm.
High-performance liquid chromatography (HPLC)
Tekočinska kromatografija visoke ločljivosti (HPLC)
Separation through a column by reversed-phase chromatography and determination at 280 nm.
Ločevanje skozi kolono s kromatografijo z nasprotno fazo in določitev pri 280 nm.
Spectrophotometer for making measurements between 300 and 700 nm.
Spektrofotometer za merjenje med 300 in 700 nm.
Glass cells with optical paths of 1 cm.
Steklene celice z dolžino optične poti 1 cm.
Barbituric acid, 0,5 % solution (m/v).
Barbiturna kislina, 0,5-odstotna raztopina (m/v).
Dissolve 500 mg of barbituric acid, C4O3N2H4, in distilled water and heat slightly over a waterbath at 100 °C.
V destilirani vodi raztopimo 500 mg barbiturne kisline, C4O3N2H4, in počasi segrejemo nad vodno kopeljo pri 100 °C.
Make up to 100 ml with distilled water.
Dopolnimo do 100 ml z destilirano vodo.
The solution keeps for about a week.
Raztopina je stabilna približno en teden.
Paratoluidine solution, 10 % (m/v).
Raztopina paratoluidina, 10 % (m/v).
This solution should be renewed daily.
To raztopino pripravljamo vsak dan sproti.
Ethanal (acetaldehyde), CH3CHO, 1 % (m/v) aqueous solution.
Etanal (acetaldehid), CH3CHO, 1-odstotna (m/v) vodna raztopina
Prepare just before use.
Pripravimo neposredno pred uporabo.
Hydroxymethylfurfural, C6O3H6, 1 g/l aqueous solution.
Hidroksimetilfurfural, C6O3H6, 1 g/l vodna raztopina
Prepare successive dilutions containing 5, 10, 20, 30 and 40 mg/l.
Pripravimo zaporedne razredčitve, ki vsebujejo po 5, 10, 20, 30 in 40 mg/l.
The 1 g/l and the diluted solutions must be freshly prepared.
Raztopina 1 g/l, pa tudi razredčene raztopine morajo biti sveže pripravljene.
Use the solution obtained by diluting the rectified concentrated must to 40 % (m/v): introduce 200 g of accurately weighed rectified concentrated must into a 500 ml volumetric flask. Make up to the mark with water and homogenise.
Uporabimo raztopino, ki jo dobimo z redčenjem rektificiranega zgoščenega mošta na 40 % (m/v): v 500-mililitrsko bučko odtehtamo natanko 200 g rektificiranega zgoščenega mošta, dolijemo vodo do oznake in homogeniziramo.
Carry out the determination on 2 ml of this solution.
Določitev opravimo na 2 ml raztopine.
Colorimetric determination
Kolorimetrična določitev
Into each of two 25 ml flasks a and b fitted with ground glass stoppers place 2 ml of the sample prepared as in paragraph 2.3.1.
V obe 25-mililitrski bučki a in b, ki imata steklen zamašek z obrusom, nalijemo 2 ml vzorca, pripravljenega v skladu s točko 2.3.1.
Place in each flask 5 ml of paratoluidine solution (paragraph 2.2.2); mix.
V vsako bučko nalijemo po 5 ml raztopine paratoluidina (točka 2.2.2); premešamo.
Add 1 ml of distilled water to flask b (control) and 1 ml barbituric acid solution (paragraph 2.2.1) to flask a. Shake to homogenize.
V bučko b (kontrolna) dodamo 1 ml destilirane vode, v bučko a pa 1 ml barbiturne kisline (točka 2.2.1). Stresamo, da se tekočina homogenizira.
Transfer the contents of the flasks into spectrophotometer cells with optical paths of 1 cm.
Vsebino bučk prenesemo v celice spektrofotometra z optično potjo 1 cm.
Zero the absorbence scale using the contents of flask b for a wavelength of 550 nm.
Skalo absorpcije nastavimo na ničlo z uporabo vsebine bučke b pri valovni dolžini 550 nm.
Follow the variation in the absorbence of the contents of flask a; record the maximum value A, which is reached after two to five minutes.
Sledimo spremembi absorpcije vsebine bučke a; zapišemo najvišjo vrednost A, ki je dosežena po dveh do petih minutah.
Samples with hydroxymethylfurfural concentrations above 30 mg/l must be diluted before the analysis.
Vzorce s koncentracijo hidroksimetilfurfurala nad 30 mg/l pred analizo razredčimo.
Preparation of the calibration curve
Umeritvena krivulja
Place 2 ml of each of the hydroxymethylfurfural solutions with 5, 10, 20, 30 and 40 mg/l (paragraph 2.2.4) into two sets of 25 ml flasks a and b and treat them as described in paragraph 2.3.2.
V dva kompleta 25-mililitrskih bučk a in b nalijemo 2 ml vsake raztopine hidroksimetilfurfurala s po 5, 10, 20, 30 in 40 mg/l (točka 2.2.4) in jih obdelamo v skladu s točko 2.3.2.
The graph representing the variation of absorbence with the hydroxymethylfurfural concentration in mg/l is a straight line passing through the origin.
Graf, ki ponazarja spremembo absorpcije s koncentracijo hidroksimetilfurfurala v mg/l, je črta, ki gre linearno skozi koordinatno središče.
Expression of results
Izražanje rezultatov
The hydroxymethylfurfural concentration in rectified concentrated musts is expressed in milligrams per kilogram of total sugars.
Koncentracija hidroksimetilfurfurala v rektificiranih zgoščenih moštih je izražena v miligramih na kilogram skupnih sladkorjev.
Method of calculation
Izračun
The hydroxymethylfurfural concentration C mg/l in the sample to be analysed is that concentration on the calibration curve corresponding to the absorbence A measured on the sample.
Koncentracija hidroksimetilfurfurala C mg/l v vzorcu za analizo je koncentracija na umeritveni krivulji, ki ustreza absorpciji A, merjeni v vzorcu.
The hydroxymethylfurfural concentration in milligrams per kilogram of total sugars is given by:
Koncentracija hidroksimetilfurfurala v miligramih na kilogram skupnih sladkorjev je dana z:
P = percentage (m/m) concentration of total sugars in the rectified concentrated must.
P = odstotek (m/m) koncentracije skupnih sladkorjev v rektificiranem zgoščenem moštu.
High-performance liquid chromatography
Tekočinska kromatografija visoke ločljivosti
High-performance liquid chromatograph equipped with:
Tekočinski kromatograf visoke ločljivosti, ki ima:
a loop injector, 5 or 10 μl,
injektor, 5 ali 10 μl,
spectrophotometer detector for making measurements at 280 nm,
spektrofotometrični detektor za merjenje pri 280 nm,
column of octadecyl-bonded silica (e.g.: Bondapak C18 — Corasil, Waters Ass.),
kolono s silikagelom, na katerega je kemijsko vezan oktadecil (npr. Bondapak C18 – Corasil, Waters Ass.),
a recorder and, if required, an integrator,
rekorder ali po možnosti integrator.
Flow rate of mobile phase: 1,5 ml/minute.
Počasni pretok mobilne faze: 1,5 ml/minuto.
Membrane filtration apparatus, pore diameter 0,45 µm.
Priprava za membransko filtriranje (premer lukenj 0,45 μm).
Doubly distilled water.
Dvakrat destilirana voda.
Methanol, CH3OH, distilled or HPLC quality.
Metanol, CH3OH, destiliran ali kakovostni HPLC.
Acetic acid, CH3COOH, (ρ20 = 1,05 g/ml).
Ocetna kislina, CH3COOH (ρ20 = 1,05 g/ml).
Mobile phase: water-methanol (paragraph 3.2.2)-acetic acid (paragraph 3.2.3) previously filtered through a membrane filter (0,45 µm), (40:9:1 v/v).
Mobilna faza: voda-metanol (točka 3.2.2) ocetna kislina (točka 3.2.3), poprej prefiltrirana prek membranskega filtra (0,45 μm), (40: 9: 1 v/v).
This mobile phase must be prepared daily and outgassed before use.
To mobilno fazo pripravimo vsak dan sproti in jo pred uporabo razplinimo.
Reference solution of hydroxymethylfurfural, 25 mg/l (v/v).
Referenčna raztopina hidroksimetilfurfurala 25 mg/l (m/v).
Into a 100 ml volumetric flask, place 25 mg of hydroxymethylfurfural, C6H3O6, accurately weighed, and make up to the mark with methanol (paragraph 3.2.2).
V 100-mililitrsko merilno bučko damo 25 mg natančno stehtanega hidroksimetilfurfurala, C6H3O6, in dopolnimo do oznake z metanolom (točka 3.2.2).
Dilute this solution 1/10e with methanol (paragraph 3.2.2) and filter through a membrane filter (0,45 µm).
Raztopino razredčimo 1: 10 z metanolom (točka 3.2.2) in prefiltriramo prek membranskega filtra (0,45 μm).
If kept in a hermetically sealed brown glass bottle in a refrigerator, this solution will keep for two to three months.
Če raztopino hranimo v hladilniku v steklenici iz rjavega stekla, se ohrani dva do tri mesece.
Use the solution obtained by diluting the rectified concentrated must to 40 % (m/v) (introduce 200 g of accurately weighed rectified concentrated must into a 500 ml volumetric flask. Make up to the mark with water and homogenise) and filter it through a membrane filter (0,45 µm).
Uporabimo raztopino, ki jo dobimo z razredčitvijo rektificiranega zgoščenega mošta na 40 % (m/v) (v 500-mililitrsko bučko damo 200 g natančno stehtanega rektificiranega zgoščenega mošta, dolijemo vodo do oznake in homogeniziramo), in jo prefiltriramo prek membranskega filtra (0,45 μm).
Chromatographic determination
Kromatografska določitev
Inject 5 (or 10) µl of the sample prepared as described in paragraph 3.3.1. and 5 (or 10) µl of the reference hydroxymethylfurfural solution (paragraph 3.2.5) into the chromatograph.
V kromatograf damo 5 (ali 10) μl vzorca, pripravljenega v skladu z opisom iz točke 3.3.1, in 5 (ali 10) μl referenčne raztopine hidroksimetilfurfurala (točka 3.2.5).
Record the chromatogram.
Zapišemo kromatogram.
The retention time of hydroxymethylfurfural is approximately six to seven minutes.
Retencijski čas hidroksimetilfurfurala je približno šest do sedem minut.
Let the hydroxymethylfurfural concentration in the 40 % (m/v) solution of the rectified concentrated must be C mg/l.
Koncentracijo hidroksimetilfurfurala v 40-odstotni (m/v) raztopini rektificiranega zgoščenega mošta označimo s C mg/l.
I. Rapid method for evaluation of heavy metals
I. Hitra metoda za analizo težkih kovin
Heavy metals are revealed in the suitably diluted rectified concentrated must by the coloration produced by the formation of sulphides.
Težke kovine se v primerno razredčenem rektificiranem zgoščenem moštu pokažejo z obarvanjem, ki ga povzroči tvorba sulfidov.
They are assessed by comparison with a standard lead solution corresponding to the maximum admissible concentration.
Ocenimo jih s primerjavo s standardno raztopino svinca, ki ustreza največji dovoljeni koncentraciji.
Determination of lead content by atomic absorption spectrophotometry
Določitev vsebnosti svinca z atomsko absorpcijsko spektrofotometrijo
The chelate given by lead with ammonium pyrrolidinedithiocarbamate is extracted with methylisobutylketone and the absorbence measured at 283,3 nm.
Helat, ki nastane iz svinca z amonijevim pirolidinditiokarbamatom, ekstrahiramo z metilizobutilketonom in izmerimo absorpcijo pri 283,3 nm.
The lead content is determined by using known additional amounts of lead in a set of reference solutions.
Vsebnost svinca določimo z uporabo znanih dodatnih količin svinca v kompletu referenčnih raztopin.
Rapid method for evaluation of heavy metals
Hitra metoda ocenjevanja težkih kovin
Dilute hydrochloric acid, 70 % (m/v).
Razredčena klorovodikova kislina, 70 % (m/v).
Take 70 g of hydrochloric acid, HCl (ρ20 = 1,16 to 1,19 g/ml), and make up to 100 ml with water.
Vzamemo 70 g klorovodikove kisline, HCl (ρ20 = 1,16 do 1,19 g/ml), in dopolnimo do 100 ml z vodo.
Dilute hydrochloric acid, 20 % (m/v).
Razredčena klorovodikova kislina, 20 % (m/v).
Take 20 g of hydrochloric acid, HCl (ρ20 = 1,16 to 1,19 g/ml), and make up to 100 ml with water.
Vzamemo 20 g klorovodikove kisline, HCl (ρ20 = 1,16 do 1,19 g/ml), in dopolnimo do 100 ml z vodo.
Dilute ammonia.
Razredčeni amonijak
Take 14 g of ammonia, NH3 (ρ20 = 0,931 to 0,934 g/ml) and make up to 100 ml with water.
Vzamemo 14 g amonijaka, NH3 (ρ20 = 0,931 do 0,934 g/ml), in dopolnimo do 100 ml z vodo.
pH 3,5 buffer solution.
Pufrska raztopina s pH 3,5
Dissolve 25 g of ammonium acetate (CH3COONH4), in 25 ml of water and add 38 ml of dilute hydrochloric acid (paragraph 2.1.1).
Raztopimo 25 g amonijevega acetata, CH3COONH4, v 25 ml vode in dodamo 38 ml razredčene klorvodikove kisline (točka 2.1.1).
Adjust the pH if necessary with the dilute hydrochloric acid (paragraph 2.1.2) or the dilute ammonia (paragraph 2.1.3) and make up to 100 ml with water.
Po potrebi pH prilagodimo z uporabo razredčene klorovodikove kisline (točka 2.1.2) ali razredčenega amonijaka (točka 2.1.3) in dopolnimo do 100 ml z vodo.
Thioacetamide solution, (C2H5NS), 4 % (m/v).
Raztopina tioacetamida, C2H5NS, 4 % (m/v)
Glycerol solution, (C3H8O3, 85 % (m/v)
Raztopina glicerola, C3H8O3, 85 % (m/v)
°C = 1,449 to 1,455).
(n D20 °C = 1,449 do 1,455).
Thioacetamide reagent.
Reagent tioacetamida.
To 0,2 ml of thioacetamide solution (paragraph 2.1.5) add 1 ml of a mixture of 5 ml of water, 15 ml of 1 M sodium hydroxide solution and 20 ml of glycerol (paragraph 2.1.6).
V 0,2 ml raztopine tioacetamida (točka 2.1.5) dodamo 1 ml mešanice 5 ml vode, 15 ml 1 M raztopine natrijevega hidroksida in 20 ml glicerola (točka 2.1.6).
Heat over a waterbath at 100 °C for 20 seconds.
Na vodni kopeli grejemo 20 sekund pri 100 °C.
Solution containing 0,002 g/l of lead.
Raztopina z 0,002 g/l svinca
Prepare a 1 g/l lead solution by dissolving 0,400 g of lead nitrate, Pb (NO3)2, in water and making up to 250 ml with water.
1 g/l raztopino svinca pripravimo tako, da v vodi raztopimo 0,400 g svinčevega nitrata, Pb(NO3)2, in dopolnimo do 250 ml z vodo.
At the time of use, dilute this solution with water to two parts in 1000 (v/v) in order to obtain a 0,002 g/l solution.
Kadar raztopino uporabimo, jo razredčimo z dvema deloma vode v 1000 (v/v), tako da dobimo raztopino 0,002 g/l.
Dissolve a test sample of 10 g of the rectified concentrated must in 10 ml of water.
Testni vzorec 10 g rektificiranega zgoščenega mošta raztopimo v 10 ml vode.
Add 2 ml of the pH 3,5 buffer solution (paragraph 2.1.4); mix.
Dodamo 2 ml pufrske raztopine s pH 3,5 (točka 2.1.4); zmešamo.
Add 1,2 ml of the thioacetamide reagent (paragraph 2.1.7).
Dodamo 1,2 ml reagenta tioacetamida (točka 2.1.7).
Mix at once.
Takoj zmešamo.
Prepare the control under the same conditions by using 10 ml of the 0,002 g/l lead solution (paragraph 2.1.8).
Kontrolni vzorec pripravimo v enakih razmerah, tako da uporabimo 10 ml 0,002 g/l raztopine svinca (točka 2.1.8).
After two minutes, any brown coloration of the rectified concentrated must solution should not be more intense than that of the control.
Morebitno rjavo obarvanje raztopine rektificiranega zgoščenega mošta po dveh minutah ne sme biti intenzivnejše kakor obarvanje kontrolnega vzorca.
Under the conditions of the above procedure, the control sample corresponds to a maximum admissible heavy metal concentration expressed as lead of 2 mg/kg of rectified concentrated must.
V enakih razmerah kakor v gornjem postopku kontrolni vzorec ustreza največji dovoljeni koncentraciji težkih kovin, izraženi kot 2 mg svinca na kilogram rektificiranega zgoščenega mošta.
Atomic absorption spectrophotometer equipped with an air-acetylene burner.
Atomski absorpcijski spektrofotometer z gorilnikom na zmes zraka in acetilena.
Lead hollow cathode lamp.
Žarnica s svinčevo votlo katodo.
Dilute acetic acid.
Razredčena ocetna kislina.
Take 12 g of glacial acetic acid (ρ20 = 1,05 g/ml) and make up to 100 ml with water.
Vzamemo 12 g ocetne kisline (ledocet) (ρ20 = 1,05 g/ml) in dopolnimo do 100 ml z vodo.
Solution of ammonium pyrrolidinedithiocarbamate, C5H12N2S2, 1 % (m/v).
Raztopina amonijevega pirolidinditiokarbamata, C5H12N2S2, 1 % (m/v).
Methylisobutylketone, (CH3)2 CHCH2COCH3.
Metilizobutilketon, (CH3)2 CHCH2COCH3.
Solution containing 0,010 g/l of lead.
Raztopina, ki vsebuje 0,010 g/l svinca.
Dilute the 1 g/l lead solution (paragraph 2.1.8) to 1 % (v/v).
Raztopimo 1 g/l raztopine svinca (točka 2.1.8) na 1 % (v/v).
Preparation of solution to be examined
Priprava raztopine za analizo