Kuyang'anira Ma syringe Otayika Pakugawa Mankhwala
1. Njira yowunikirayi imagwira ntchito pa ma syringe omwe amatha kutaya.
Kukonzekera yankho la mayeso
a.Tengani zoperekera 3 mwachisawawa kuchokera pagulu lomwelo lazinthu (chiwerengero chachitsanzocho chidzatsimikiziridwa molingana ndi kuchuluka kwamadzimadzi ofunikira ndi mafotokozedwe a dispenser), onjezani madzi pachitsanzocho pamlingo womwewo ndikutulutsa mung'oma ya nthunzi.Kukhetsa madzi mu galasi chidebe pa 37 ℃± 1 ℃ kwa 8h (kapena 1h) ndi kuziziziritsa ndi kutentha firiji monga madzi m'zigawo.
b.Sungani gawo la madzi a voliyumu yofanana mu chidebe chagalasi ngati njira yowongolera yopanda kanthu.
1.1 Zinthu zachitsulo zotulutsidwa
Ikani 25ml ya yankho la m'zigawo mu 25ml Nessler colorimetric chubu, tengani 25ml Nessler colorimetric chubu, onjezani 25ml wa lead standard solution, onjezerani 5ml wa sodium hydroxide test solution pa machubu awiriwa a colorimetric, onjezani madontho 5 a sodium sulfide test solution motsatana, ndi gwedezani.Sichidzakhala chozama kuposa maziko oyera.
1.2 pH
Tengani yankho a ndi yankho b lomwe lakonzedwa pamwambapa ndikuyesa ma pH awo ndi acidimeter.Kusiyanitsa pakati pa ziwirizi kudzatengedwa ngati zotsatira zoyesa, ndipo kusiyana sikuyenera kupitirira 1.0.
1.3 Zotsalira za ethylene oxide
1.3.1 Kukonzekera yankho: onani Zowonjezera I
1.3.2 Kukonzekera yankho la mayeso
Njira yothetsera mayesero iyenera kukonzedwa mwamsanga mutatha kuyesa, mwinamwake chitsanzocho chidzasindikizidwa mu chidebe kuti chisungidwe.
Dulani chitsanzocho mu zidutswa ndi kutalika kwa 5mm, kulemera kwa 2.0g ndikuyika mu chidebe, onjezerani 10ml ya 0.1mol / L hydrochloric acid, ndikuyikeni kutentha kwa 1h.
1.3.3 Njira zoyesera
① Tengani machubu 5 a Nessler colorimetric ndikuwonjezera molondola 2ml ya 0.1mol/L hydrochloric acid motsatana, ndiyeno yonjezerani molondola 0.5ml, 1.0ml, 1.5ml, 2.0ml, 2.5ml ethylene glycol solution.Tengani chubu china cha Nessler colorimetric ndikuwonjezera molondola 2ml ya 0.1mol/L hydrochloric acid ngati chowongolera chopanda kanthu.
② Onjezani 0.4ml ya 0.5% ya 0.5% periodic acid mu chubu chilichonse chomwe chili pamwambapa ndikuchiyika kwa 1h.Kenako tsitsani njira ya sodium thiosulfate mpaka mtundu wachikasu ungozimiririka.Kenaka yikani 0.2ml ya fuchsin sulfurous acid test solution motsatana, tsitsani mpaka 10ml ndi madzi osungunuka, ikani kutentha kwa 1h, ndikuyesa kuyamwa kwa 560nm wavelength ndi yankho lopanda kanthu.Jambulani mphamvu yopindika yokhazikika.
③ Samutsirani molondola 2.0ml ya njira yoyesera mu chubu cha Nessler's colorimetric chubu, ndikugwira ntchito molingana ndi sitepe ②, kuti muwone kuchuluka kofananirako kwa mayeso kuchokera pamapindikira okhazikika ndi kuyamwa kwake.Kuwerengera mtheradi wa ethylene oxide zotsalira motsatira njira iyi:
WEO=1.775V1 · c1
Kumene: WEO -- zomwe zili mu ethylene oxide mu unit product, mg/kg;
V1 - voliyumu yofananira ya yankho loyesa lomwe limapezeka pamapindikira okhazikika, ml;
C1 - ndende ya ethylene glycol solution, g/L;
Kuchuluka kotsalira kwa ethylene oxide sikuyenera kupitirira 10ug/g.
1.4 Ma oxides osavuta
1.4.1 Kukonzekera yankho: onani Zowonjezera I
1.4.2 Kukonzekera yankho la mayeso
Tengani 20ml ya mayeso njira analandira ola limodzi pambuyo yokonza m'zigawo njira a, ndi kutenga b monga akusoweka ulamuliro njira.
1.4.3 Njira zoyesera
Tengani 10ml ya yankho la m'zigawo, onjezerani mu botolo la 250ml la ayodini, onjezerani 1ml ya sulfuric acid (20%), onjezerani 10ml ya 0.002mol potassium permanganate solution, kutentha ndi kuwiritsa kwa mphindi zitatu, kuziziritsa mofulumira, kuwonjezera 0.1 g wa potaziyamu iodide, ikani mwamphamvu ndikugwedezani bwino.Nthawi yomweyo titrate ndi sodium thiosulfate muyezo wa thiosulfate wokhazikika womwewo kukhala wachikasu chopepuka, onjezani madontho 5 a wowuma wosonyeza yankho, ndipo pitilizani kutsitsa ndi sodium thiosulfate njira yokhazikika yopanda mtundu.
Tchulani njira yowongolera yopanda kanthu ndi njira yomweyo.
1.4.4 Kuwerengera zotsatira:
Zomwe zili muzinthu zochepetsera (ma oxides osavuta) zimawonetsedwa ndi kuchuluka kwa yankho la potaziyamu permanganate:
V=
Kumene: V - kuchuluka kwa njira yothetsera potassium permanganate, ml;
Vs - voliyumu ya sodium thiosulfate yankho lomwe limamwedwa ndi yankho loyesa, ml;
V0 - voliyumu ya sodium thiosulfate yankho lomwe limamwedwa ndi yankho lopanda kanthu, ml;
Cs - kuchuluka kwenikweni kwa titrated sodium thiosulfate solution, mol/L;
C0 - kuchuluka kwa njira yothetsera potassium permanganate yotchulidwa muyeso, mol/L.
Kusiyana kwa kumwa njira ya potassium permanganate pakati pa kulowetsedwa kwa dispenser ndi njira yopanda kanthu ya mtanda womwewo wa voliyumu womwewo ukhale ≤ 0.5ml.
Nthawi yotumiza: Sep-26-2022
