Kodi mukudziwa za n-hexane?

Popeza n-hexane ndi chinthu chosungunuka chachilengedwe chomwe chimagwiritsidwa ntchito kwambiri komanso chotsika mtengo, imagwiritsidwa ntchito kwambiri pokonza mafakitale, kupanga zinthu zopepuka, komanso kukonza chakudya poyeretsa, kuchotsa, kumatira ndi njira zina. Komabe, kumvetsetsa kwa anthu za n-hexane kumakhala kochepa komanso kosocheretsa. Anthu ambiri sadziletsa chifukwa chakuti imatchedwa kuti "yopanda poizoni", pomwe kwenikweni ndi chifukwa chobisika cha poizoni kuntchito. Pofuna kuthandiza anthu kupewa zoopsa mwasayansi, nkhaniyi ikuyankha mafunso omwe anthu ambiri amafunsa okhudza n-hexane ndikufotokozera malingaliro olakwika omwe anthu ambiri amakumana nawo.

Q1: Nchifukwa chiyani n-hexane ndi chinthu choopsa kwambiri pa thanzi la ogwira ntchito ngakhale kuti ndi poizoni wochepa?

Mosiyana ndi mankhwala oopsa kwambiri monga formaldehyde ndi benzene, n-hexane siimayambitsa zizindikiro zoonekeratu za poizoni ikagwiritsidwa ntchito pang'ono kapena pang'ono, zomwe zimafotokoza chifukwa chake zoopsa zake nthawi zambiri zimachepetsedwa. Malinga ndi mankhwala, n-hexane ndi madzi owopsa pang'ono, opanda mtundu, owonekera bwino omwe ali ndi fungo lochepa komanso kutentha kwambiri kutentha kwa chipinda. Imalowa m'thupi la munthu makamaka kudzera mu kupuma mpweya komanso kukhudzana ndi khungu.

Choopsa kwambiri ndi chakutipoizoni wochulukaThupi la munthu limagwiritsa ntchito n-hexane pang'onopang'ono; kusowa kwa n-hexane nthawi yayitali kumabweretsa kusonkhanitsa poizoni kosalekeza komanso kuwonongeka pang'onopang'ono kwa mitsempha ya m'thupi. Kuphatikiza apo, n-hexane imatha kuyaka kwambiri. Nthunzi yake imatha kupanga zosakaniza zophulika ndi mpweya ndipo ingayambitse kuyaka kapena kuphulika ikakumana ndi malawi otseguka kapena kutentha kwambiri. Chifukwa cha zoopsa zonse za poizoni komanso zoyaka, imawongoleredwa mosamala pakuyang'anira thanzi la ogwira ntchito.

Q2: Kodi n-hexane imapezeka kuti nthawi zambiri? Kodi anthu wamba ayenera kukhala maso?

N-hexane imagwiritsidwa ntchito kwambiri m'mafakitale ndi m'mafakitale azakudya, ndipo ogwira ntchito kutsogolo akukumana ndi chiopsezo chachikulu cha kuwonongeka. M'mafakitale, imagwiritsidwa ntchito kwambiri popanga zinthu zamagetsi, kuchotsa mafuta m'zida, kukonza chikopa, kupanga nsapato ndi kusindikiza kuti achotse mafuta, kusakaniza guluu ndi kusungunula inki.

Mu makampani opanga chakudya, n-hexane yamtundu wa chakudya imagwira ntchito ngati chochotsera mafuta a masamba monga mafuta a soya ndi mafuta a rapeseed. Zotsalira zimachepetsedwa kudzera mu njira zoyeretsera ndipo zimagwirizana mokwanira ndi miyezo yachitetezo cha dziko, zomwe zimapangitsa kuti anthu azidya tsiku ndi tsiku. Anthu wamba amakhala ndi nthawi yochepa yogwiritsira ntchito tsiku ndi tsiku ndipo amangofunika kupewa zinthu zomatira zosafunikira komanso sopo wosayenerera popanda kuda nkhawa kwambiri.

Q3: Kodi zizindikiro zodziwika bwino za poizoni wa n-hexane ndi ziti ndipo tingazisiyanitse bwanji ndi kutopa wamba?

Poizoni wa N-hexane umagawidwa m'magulu awiri: kusasangalala kwambiri ndi poizoni wochuluka komanso wochuluka, ndipo womalizawu ndi woopsa kwambiri. Kupuma mpweya wa n-hexane wochuluka kwa kanthawi kochepa kungayambitse chizungulire, nseru, kutopa, kugona tulo komanso kulimba pachifuwa. Zizindikirozi zimafanana ndi kutopa ndi kutentha kapena kutopa ndipo zimanyalanyazidwa mosavuta, koma nthawi zambiri zimachepa mutachoka pamalo oipitsidwawo.

Kupha poizoni nthawi zonse chifukwa cha kuwonetsedwa nthawi yayitali osatetezedwa ndi chinyengo chachikulu. Zizindikiro zoyambirira zimaphatikizapo dzanzi la zala, kuchepa kwa mphamvu yogwira komanso miyendo yofooka, zomwe nthawi zambiri zimaganiziridwa kuti ndi kutopa wamba. Pamene poizoni akuwunjikana, odwala amatha kumva kupweteka kwa minofu pang'onopang'ono, kufooka kwa thupi lonse komanso dzanzi lofalikira. Milandu yoopsa imayamba kukhala ndi matenda a mitsempha ya m'mitsempha, zomwe zimapangitsa kuti minofu ifooke komanso kuti thupi lizigwira ntchito molakwika. Kuwonongeka kwa mitsempha kumakhala kovuta kukonza ndipo kumafuna nthawi yayitali yochira. Kukhudzana ndi khungu nthawi yayitali kumawononganso chotchinga cha khungu, zomwe zimapangitsa kuti khungu likhale louma, losweka komanso lolumikizana ndi khungu.

Q4: Kodi ogwira ntchito kutsogolo angapeze bwanji chitetezo cha sayansi? Kodi mfundo zazikulu ndi ziti?

Ngozi za N-hexane zimatha kupewedwa kwathunthu kudzera mu chitetezo chokhazikika, chomwe chimayang'ana kwambiri pa mpweya wabwino, chitetezo cha munthu payekha komanso kusamalira thanzi. Choyamba, malo ogwirira ntchito ayenera kusunga mpweya wabwino ndi zida zotulutsira utsi kuti achepetse nthunzi ya n-hexane yosakhazikika komanso kupewa kusonkhanitsana kwakukulu.

Chachiwiri, ogwira ntchito ayenera kuvala zophimba nkhope za gasi, magolovesi a rabara osasungunuka ndi magalasi oteteza panthawi yogwira ntchito. Kukhudzana mwachindunji ndi khungu ndi kupuma movutikira n’koletsedwa kwambiri. Pakadali pano, malamulo okhwima oteteza moto ayenera kutsatiridwa; malawi otseguka ndi kutentha kwambiri n’zoletsedwa m’malo ogwirira ntchito kuti athetse zoopsa zomwe zingayake komanso kuphulika. Chachitatu, kuyezetsa thanzi la ogwira ntchito nthawi zonse n’kofunika kwambiri kwa ogwira ntchito kwa nthawi yayitali kuti azindikire kuwonongeka kwa mitsempha msanga ndikulola kuti alowererepo mwachangu komanso kuti alandire chithandizo.

Q5: Kodi ndi zinthu ziti zofunika kwambiri posungira n-hexane ndi kutaya zinthu mwadzidzidzi?

Kusunga N-hexane kuyenera kutsatira malamulo oopsa a mankhwala. Iyenera kutsekedwa bwino ndikusungidwa m'nyumba yosungiramo zinthu yozizira, yopuma mpweya kutali ndi magwero a kutentha ndi malawi otseguka, kupewa kutentha kwambiri. Iyenera kusungidwa padera ndipo isasakanizidwe ndi ma oxidants, ma acid kapena alkalis kuti ipewe zotsatira zoopsa za mankhwala. Zidebe za pulasitiki ndi rabara ndizoletsedwa, chifukwa n-hexane ikhoza kuziwononga ndikuyambitsa kutuluka kwa madzi.

Chithandizo chadzidzidzi chofunikira ngati mwangokumana ndi ngozi. Malo okhudzidwa ndi khungu ayenera kutsukidwa bwino ndi sopo ndi madzi othamanga. Kukumana ndi maso kumafuna kutsukidwa madzi nthawi zonse ndi chithandizo chamankhwala pambuyo pake. Anthu omwe akuvutika ndi vuto lopuma ayenera kusunthidwa nthawi yomweyo kupita ku mpweya wabwino ndikupeza chithandizo chamankhwala mwachangu ngati zizindikiro zili zazikulu. Anthu omwe akumwa sayenera kukakamizidwa kusanza kuti apewe chibayo cha aspiration ndipo ayenera kufunafuna chithandizo chamankhwala mwachangu. Mwachidule, zoopsa za n-hexane zimayamba makamaka chifukwa cha opaleshoni yosakhala yachizolowezi. Kudziwa bwino za chitetezo ndikutsatira malamulo oteteza kumatha kupewa zoopsa zobisika ndikuwonetsetsa kuti malo ogwirira ntchito ndi otetezeka.