Iyini Isixazululo se-Hypertonic?
Emakilasini ekhemistri kanye nebhayoloji, igama elithi isixazululo se-hypertonic livame ukuvela lapho kuxoxwa ngokuhamba kwamanzi ngokusebenzisa ulwelwesi lwamaseli, ibhalansi yoketshezi lomzimba, kanye nokusetshenziswa kwalo kwezokwelapha. Nakuba kungase kuzwakale njengobuchwepheshe, umqondo wesisombululo se-hypertonic empeleni kulula kakhulu ukuwuqonda uma siqonda isihluthulelo: umehluko ekugxilweni kwe-solute nokuthi lowo mehluko "udonsa" kanjani amanzi ukuze ahambe. Lesi sihloko sizoxoxa ngencazelo yesisombululo se-hypertonic, ukuthi sisebenza kanjani, izibonelo, imiphumela yaso emaseli, kanye nezinzuzo nezingozi zaso ekusebenzeni.
Ukuqonda Izixazululo Ze-Hypertonic
Isixazululo se-hypertonic yisisombululo esinezinga eliphezulu le-solute (njengosawoti noma ushukela) kunesixazululo saso sokubhekisela, ikakhulukazi uma siqhathaniswa noketshezi olungaphakathi kweseli noma esinye isisombululo esihlukaniswe yi-membrane engangeni. Ngenxa yokugcwala kwayo okuphezulu kwe-solute, isixazululo se-hypertonic sinengcindezi enkulu ye-osmotic.
Igama elithi “hyper-” lisho “okuphakeme” noma “okuningi,” kanti elithi “tonic” lisho i-tonicity, ikhono lesisombululo lokuthonya ukunyakaza kwamanzi phezu kwe-membrane engangeni ngenxa yokwehluka kokuhlushwa kwe-solutes engakwazi ukudlula kwi-membrane. Ngakho-ke, uma isixazululo sibizwa ngokuthi i-hypertonic esiseleni, kusho ukuthi isixazululo esingaphandle kweseli sigxile kakhulu kunoketshezi olungaphakathi kweseli.
Ukuqonda i-Osmosis ne-Tonicity
Ukuze umqondo wezixazululo ze-hypertonic ucace kakhudlwana, kubalulekile ukuqonda amagama amabili ayisisekelo: i-osmosis kanye ne-tonicity.
1. I-Osmosis ukuhamba kwama-molecule amanzi esuka endaweni enezinga eliphansi (elincibilikisiwe kakhulu) elincibilikisiwe aye endaweni enezinga eliphezulu (eligxilile kakhulu) elincibilikisiwe nge-membrane engangenisi amanzi. I-membrane engangenisi amanzi ivumela amanzi ukuthi adlule, kodwa ikhawulela noma ivimbele ezinye izinto ezincibilikisiwe ukuthi zidlule.
2. I-Tonicity iwumphumela wesisombululo kuvolumu yeseli ngenxa ye-osmosis. I-Tonicity icabangela i-solutes engakwazi ukuwela i-membrane (engangeni). Ngakho-ke, izixazululo ezimbili zingaba nokuhlushwa okufanayo okuphelele, kodwa umphumela we-tonicity ungahluka uma ikhono le-solute lokuwela i-membrane lihlukile.
Izixazululo ze-hypertonic, ngoba zigxile kakhulu, "zizokhipha" amanzi emaseli. Ngenxa yalokho, amaseli alahlekelwa amanzi futhi anciphe.
Kwenzekani Kumaseli Esisombululo Se-Hypertonic?
Uma iseli (njengeseli elibomvu legazi, iseli lesitshalo, noma iseli lesilwane) lifakwa esixazululweni se-hypertonic, amanzi azophuma esiseleni aye esixazululweni esigxile kakhulu. Lokhu kwenzeka ngoba amanzi azama ukulinganisela umehluko ekugxileni.
Umthelela emaselini ungahluka kuye ngohlobo lweseli:
– Kumaseli ezilwane (kufaka phakathi amaseli abomvu egazi): Amaseli ayancipha ngenxa yokulahlekelwa amanzi. Kumaseli abomvu egazi, lokhu kuncipha kanye nokubukeka okushwabene kubizwa ngokuthi i-crenation. Uma lokhu kwenzeka ngokweqile, ukusebenza kwamaseli kungaphazamiseka.
– Kumaseli ezitshalo: Amanzi nawo ayaphuma, kodwa amaseli ezitshalo anezindonga zamaseli eziqinile. Ngenxa yalokho, ulwelwesi lweseli lungasuka odongeni lweseli, okubangela ukuba iseli libune. Lesi simo sibizwa ngokuthi i-plasmolysis. Izitshalo ezibhekana ne-plasmolysis enzima zizobonakala zibunile futhi zibe nobunzima bokugcina ingcindezi ye-turgor, ingcindezi yangaphakathi egcina isitshalo simile.
Ngakho-ke, izixazululo ze-hypertonic zivame ukubangela ukuthi amangqamuzana anciphe futhi alahlekelwe yivolumu.
Umehluko phakathi kwe-Hypertonic, Isotonic, kanye ne-Hypotonic Solutions
Ukuze ungadideki, nansi ukuqhathanisa:
1. I-Hypertonic: Ukuhlushwa kwezinto ezincibilikisiwe kuphakeme kunasesiseleni → amanzi ashiya iseli → iseli liyancipha.
2. I-Isotonic: Ukuhlushwa kwezinto ezincibilikisiwe kufana nokusesiseleni → akukho ukunyakaza kwamanzi okunetha → iseli lihlala lizinzile.
3. I-Hypotonic: Ukuhlushwa kwezinto ezincibilikisiwe kuphansi kunangaphakathi kweseli → amanzi angena esitokisini → iseli liyavuvukala, futhi lingaqhuma ngisho (kumaseli ezilwane) uma kukhulu kakhulu.
Uma kubhekwa uketshezi lomzimba womuntu, izixazululo ze-isotonic zivame ukubhekwa “njengeziphephile” ekuphathweni koketshezi ngoba zigcina ukuqina kwamangqamuzana. Kodwa-ke, izixazululo ze-hypertonic zisenezinzuzo ezithile uma zisetshenziswa ngaphansi kwezimo ezifanele kanye nomthamo ofanele.
Izibonelo Zezixazululo Ze-Hypertonic Empilweni Yansuku Zonke
Umqondo wezixazululo ze-hypertonic ungatholakala ezimweni eziningi, isibonelo:
– Amanzi anosawoti agxilile: Uma isisombululo sikasawoti sigxile kakhulu kunoketshezi olusesiseleni, khona-ke sinamandla kakhulu.
– Isixazululo sikashukela esijiyile: Isibonelo, isiraphu enokuqukethwe ushukela okuphezulu ingaba yi-hypertonic kumaseli e-microorganism.
– Inqubo yokulondoloza ukudla: Usawoti noshukela kusetshenziswa ukuvimbela ukukhula kwamagciwane. Lokhu kwenziwa ngokudala indawo ekhipha amanzi emangqamuzaneni ezinto eziphilayo ezincane, iwaqede amanzi futhi yenze kube nzima ukuthi aphile. Izibonelo zifaka phakathi inhlanzi enosawoti, izithelo ezifakwe amaswidi, noma ijamu.
Ukulondolozwa ngosawoti noshukela akusebenzi nje kuphela “ekubulaleni” amagciwane, kodwa futhi kunciphisa kakhulu amanzi akhululekile (umsebenzi wamanzi) futhi kubangele ukuphelelwa amanzi emzimbeni kwamangqamuzana amagciwane.
Izixazululo ze-Hypertonic Emhlabeni Wezokwelapha
Ekunakekelweni kwezempilo, izixazululo ze-hypertonic zisetshenziselwa izinjongo ezithile, ikakhulukazi ukudonsa uketshezi nge-osmosis. Kodwa-ke, kumele zisetshenziswe ngokuqapha, njengoba zingashintsha ibhalansi ye-electrolyte kanye nevolumu yoketshezi.
Ezinye izibonelo zokusetshenziswa:
1. I-Hypertonic saline (isib. 3% NaCl)
Isixazululo se-saline esine-hypertonic singasetshenziswa ezimweni ezithile, njengokusiza ekwelapheni i-hyponatremia enzima nenezimpawu (amazinga aphansi e-sodium egazini). Ngenxa yokugcwala kwayo okuphezulu kwe-sodium, ukusetshenziswa kwayo kungandisa amazinga e-sodium, kodwa kumele kuqashwe ngokucophelela ukuze kuvinjelwe izinkinga ezivela ekwandeni okusheshayo kwe-sodium.
2. Ukwelashwa kokuphefumula nge-hypertonic saline
Kwezinye izifo zokuphefumula, izixazululo ze-hypertonic ezifakwe i-nebulized zingasiza ekunciphiseni nasekukhipheni i-phlegm. Isimiso siwukuthi izixazululo ze-hypertonic zidonsa amanzi ebusweni bendlela yokuphefumula, okwenza kube lula ukukhipha i-mucus. Kodwa-ke, kwabanye abantu, zingabangela ukucasuka noma i-bronchospasm, ngakho-ke kudingeka ukubhekwa kwezokwelapha.
3. Sebenzisa ukunciphisa ukuvuvukala kwezicubu ezithile
Kwezinye izimo zezokwelapha, uketshezi olunamandla kakhulu lungasiza ekuhambiseni uketshezi oluvela ezikhaleni zezicubu luye emithanjeni yegazi. Kodwa-ke, lo mkhuba uncike enkombeni kanye nenqubo yezokwelapha.
Izinzuzo Nezingozi Zezixazululo Ze-Hypertonic
Izinzuzo eziyinhloko:
– Idonsa amanzi emaseli noma ezicutshini (okuwusizo ngezinhloso ezithile).
– Kuvimbela ukukhula kwamagciwane amancane (okuwusizo ekulondolozweni).
- Kungasiza ekukhululeni ulwelwesi kwezinye izindlela zokuphefumula.
Izingozi nemiphumela emibi:
– Uma ishaya amangqamuzana omzimba ngaphandle kokulawula, ingabangela ukuthi amangqamuzana anciphe futhi angasebenzi kahle.
– Ekusetshenzisweni kwezokwelapha, kungaphazamisa ibhalansi ye-electrolyte (isb. i-sodium) futhi kuthinte umfutho wegazi noma izimo zoketshezi lomzimba.
– Kungabangela ukucasuka uma kusetshenziswa ezicutshini ezibucayi, njengomgudu wokuphefumula kwezinye iziguli.
Ngakho-ke, izixazululo ze-hypertonic akufanele zisetshenziswe ngokunganaki. Ngokwezokwelapha, umthamo, isivinini sokusetshenziswa, kanye nesimo sesiguli yizinto ezibalulekile ekunqumeni ukuphepha.
Isiphetho
Isixazululo se-hypertonic siyisisombululo esinokuqukethwe okuphezulu kwe-solute kunesixazululo sokubhekisela, ikakhulukazi uma kuqhathaniswa noketshezi olungaphakathi kweseli. Ngenxa yomehluko ekugxilweni, isixazululo se-hypertonic sinengcindezi enkulu ye-osmotic futhi sivame ukukhipha amanzi esitokisini nge-osmosis. Ngenxa yalokho, amangqamuzana ezilwane angancipha (ancipha), kuyilapho amangqamuzana ezitshalo engathola i-plasmolysis (i-membrane iyahlukana nodonga lweseli futhi isitshalo siyabuna). Nakuba ingaba nemiphumela ebonakala "inzima" kumaseli, izixazululo ze-hypertonic zinezicelo ezibalulekile ekulondolozweni kokudla nakwezokwelapha, uma nje zisetshenziswa ngendlela efanele nangendlela elawulwayo.
Uma uthanda, ngingangeza nomfanekiso olula (umdwebo) mayelana nendlela amanzi ahamba ngayo esixazululweni se-hypertonic, noma ngenze inguqulo yesayensi kakhulu yesihloko semisebenzi yesikole/yasekolishi egcwele izinkomba.
