I-Invisible Guardian: Indlela Abakhiqizi Bekhabhinethi Yokuphepha Kwamakhemikhali Angokwezifiso Abavikela Ngayo Izindawo Zokusebenza

I-Invisible Guardian: Indlela Abakhiqizi Bekhabhinethi Yokuphepha Kwamakhemikhali Angokwezifiso Abavikela Ngayo Izindawo Zokusebenza
Amakhabethe okuphepha amakhemikhali ajwayelekile—uhlobo olukhipha ngqo eshalofini lempahla yezimboni—avame ukubhekwa “njengamahle ngokwanele.” Abukeka eqinile, anezilebula zesexwayiso, futhi ahlola ibhokisi ohlwini lokuthobela imithetho. Kodwa ezindaweni zokusebenza zangempela, avame ukwehluleka lapho kubaluleke kakhulu khona: ukuphepha kwangempela.
Kwenye ilabhorethri yamakhemikhali yaseyunivesithi, ikhabhinethi ekhiqizwe ngobuningi yayigcina i-sulfuric acid eqoqekile. Lapho isitsha sivuza, ikhabhinethi yayingenawo umkhawulo wokuchitheka. I-asidi yangena, yalimaza ezinye izitsha, yaqopha phansi kwekhonkrithi, futhi yaphoqa ukuthi ilabhorethri ivalwe amahora amabili. Ngenhlanhla, akekho owalimala—kodwa umyalezo wawucacile. Lelo khabhinethi kwakungeyona ikhambi lokuphepha. Kwakuyisitoreji nje esinesitika sesixwayiso. Yayingenayo imininingwane evimbela izehlakalo ukuthi zingabi yizinhlekelele: ukulawula kahle ukuchitheka, umoya wokungenisa umoya ukuze kungene umusi oqothulayo, kanye nokuhlukaniswa kwamakhemikhali angahambisani.
Amakhabhinethi okuphepha kwamakhemikhali abalulekile ezindaweni ezahlukahlukene, okuhlanganisa amafektri agcina izinyibilikisi zezimboni, amalabhu ocwaningo aseyunivesithi aphatha ama-reagent, amakamelo esayensi yesikole aqukethe i-ethanol, kanye namalabhu ezibhedlela aphatha izinto eziyingozi. Indawo ngayinye inezinqubo zayo zansuku zonke, inhlanganisela yamakhemikhali, kanye nemikhawulo yokwakheka. Lezi ziqiniso azikwazi ukuvunyelwa yikhabhinethi eyodwa efanela bonke, evame ukuphoqa abasebenzi ukuba bagweme ikhabhinethi kunokuba bazuze kuyo.

Abakhiqizi bamakhabethe okuphepha amakhemikhali enziwe ngokwezifiso benza okungaphezu nje kokwenza izivalo zensimbi. Ngemva kokucwaninga ngokuziphatha kwabantu, imikhawulo yesikhala, namakhemikhali, bakha amakhabethe ahlanganiswa kalula nemisebenzi yansuku zonke. Laba bakhiqizi bangaphezu nje kokuba abaphakeli babaphathi bezokuphepha nabaqondisi bezikhungo; bangabambisene ekunciphiseni izingozi, basiza ekuguqulweni kwemithetho ephoqelekile ibe ukuvikelwa okusebenzayo uma kwenzeka isimo esiphuthumayo.

Izingozi Zokuphepha Ezifihliwe Zamakhabethe Alingana Wonke Ngosayizi Owodwa
Amakhabhinethi ajwayelekile avame ukwehluleka ngezindlela ezimbalwa ezifanayo—futhi lokho kwehluleka kubonakala kahle kwakuyizinto ezibaluleke kakhulu kwezokuphepha.
Inkinga yokuqala isikhala. Ikhabethe lokuphepha elijwayelekile elingamamitha amane ububanzi lingase libukeke lihle ephepheni, kodwa esitshalweni sokukhiqiza sangempela ngokuvamile alikwazi ukulingana eduze komugqa wokukhiqiza. Uma lokho kwenzeka, izisebenzi ziphoqeleka ukuhamba amabanga amade—ngezinye izikhathi angaphezu kwamamitha angu-50—ngenkathi ziphethe izitsha ezisindayo ze-solvent. Ngokuhamba kwesikhathi, lokho kuholela ekukhathaleni, ezinqamulelayo, kanye nesilingo sangempela sokushiya amakhemikhali ngaphandle ubusuku bonke “kanye nje.” Ukunethezeka kuqala ukwedlula ukuphepha.
Inkinga yesibili ukuthi lawa makhabhinethi aphatha kanjani amakhemikhali ahlukene. Amamodeli amaningi ajwayelekile asebenzisa indawo eyodwa evulekile, okusho ukuthi izinto ezivuthayo, izinto ezibolayo, izinto ezikhipha ukungcola, kanye nezinyibilikisi konke kugcina kwabelana ngesikhala esifanayo. Kulebula, lokho kungase kubonakale njengokugcina okuhambisanayo, kodwa empeleni kuyingozi. Ukuvuza okuncane obekufanele ngabe akunangozi kungaba ingozi yomlilo noma kubangele ukusabela kwamakhemikhali okuyingozi.
Ukwehluleka kwesithathu ukwakheka okungabanaki abantu abasebenzisa ikhabethe ngempela. Emalabhorethri esikole samabanga aphezulu, amakhabethe amade avame ukuphoqa abafundi ukuba bakhwele ezihlalweni ukuze nje bafinyelele amakhemikhali ayisisekelo. Engeza izingidi ezingatholakali noma eziklanywe kabi ezingavikeleki ezinganeni, futhi ingozi iyanda kakhulu—ikakhulukazi lapho abafundi abasebasha noma izivakashi zikhona.
Lezi akuzona iziphambeko ezincane zomklamo. Ziyizikhala eziphazamisa ukuphepha nsuku zonke, ziguqula isitoreji esivamile sibe ingozi eqhubekayo.

Yini Eyenza Ikhabhinethi Yokuphepha Kwamakhemikhali Eyenziwe Ngokwezifiso “Ilungele Indawo Yokusebenza”?
Isisekelo samakhabethe okuphepha amakhemikhali enziwe ngokwezifiso ngumqondo oqondile wokuthi ukuphepha akufanele kukuphoqe ukuthi ushintshe izindlela zakho zokusebenza. Abakhiqizi abaphezulu baqala ngokulalela imikhuba yethimba lakho, indawo yakho, kanye namakhemikhali akho ngaphambi kokuklama amakhabethe ahlinzeka ngokuvikela ngaphandle kokuphazamisa. Izici ezingaxoxiswana ngazo eziwahlukanisa yilezi ezilandelayo:
1. Izinto Ezihambisana Namakhemikhali Akho:
Nakuba insimbi ibonakala iqinile, amakhemikhali amaningi awacabangi okufanayo. Izinto ezibolayo ezinamandla njenge-hydrochloric noma i-sulfuric acid zingayigugula kancane kancane insimbi evamile, ngezinye izikhathi ezinyangeni ezimbalwa. Okuqala njengokuwohloka kobuso okuncane kukhula kube ukuvuza, izindawo ezibuthakathaka, kanye namakhabethe angaphephile.
Abakhiqizi bamakhabethe okuphepha bangasiza ngempela kulesi simo. Bakhetha izinto zokwakha ngokwezinto ezithile ezibanjiwe kunokusebenzisa insimbi efanayo kukho konke. Amakhemikhali okuhlanza axutshwe kanye nezinto ezibolayo ezincane zilungele insimbi ehlanganisiwe. Insimbi engagqwali yebanga elingu-316 inikeza ukumelana okukhulu kakhulu nama-asidi aqinile njenge-nitric acid ezindaweni zelebhu. Ngaphezu kwalokho, amakhabethe e-polypropylene ayindlela ephephile kakhulu yamakhemikhali afana ne-hydrofluoric acid alimaza insimbi ngokuphelele.
Ngokufanisa izinto zekhabhinethi nekhemikhali engaphakathi, ukugqwala kuyasuswa kakhulu. Emalabhorethri amaningi, amakhabhinethi ensimbi engagqwali enziwe ngokwezifiso ahlala engenagqwala iminyaka emihlanu noma ngaphezulu, kuyilapho amakhabhinethi ensimbi ajwayelekile evame ukudinga ukushintshwa ngemva konyaka owodwa noma emibili. Akukhona nje ukuqina—kumayelana nokuvimbela ukwehluleka ngaphambi kokuba kwenzeke.
2. Imiklamo Yekhabhinethi Ehlakaniphile Ethuthukisa Ukuphepha Ezindaweni Ezilinganiselwe:
Amaphaseji elabhorethri amancane, amakhabethe ezitshalo anophahla oluphansi, izingono ezingakhululekile eziseduze nezindawo zokusebenza, namakamelo esikole anesikhala esincane sodonga kumane nje kuyizibonelo ezimbalwa zezimo ezahlukahlukene ezingase zithathwe yizindawo zokusebenza. Abenzi bezinto ezenziwe ngokwezifiso bakha izilinganiso ezinembile: amakhabethe asekhoneni asebenzisa izindawo ezifile amayunithi ajwayelekile angenakuzifinyelela; amakhabethe amancane angamasentimitha angu-24 ububanzi afanela izikhala ezincane zelebhu, kanye namayunithi angafakwa endaweni yokugcina izinto kane ngaphandle kokwandisa isikhala saphansi. Amakhabethe enziwe ngokwezifiso afanela indawo njengoba ayenzelwe yona (ngoba enzelwe yona), ngakho-ke ilabhorethri enesikhala esingamamitha amathathu phakathi kwama-fume hood ayidingi ukubeka kabusha imishini yayo. Amakhemikhali agcinwa eduze nokusetshenziswa kwawo okuhlosiwe ngenxa yalo mklamo wokonga isikhala, okunciphisa ukuthwala kanye nengozi.

3. Ukuhlukanisa Amakhemikhali Ukuze Kuvumelane Nezinto Eziphilayo;
Kungaba yinhlekelele ukugcina amakhemikhali angahambisani ndawonye njengoba ama-oxidizer kanye nezinyibilikisi zingase zibambe umlilo, futhi izinto ezivuthayo kanye nezinto ezibolayo zingasabela. Amaqembu aphoqeleka ukwephula imithetho yokuphepha ukuze afake wonke amakhemikhali awo ngoba amakhabethe ajwayelekile anegumbi elilodwa elikhulu kuphela. Amakamelo amabili noma amathathu aneminyango ehlukene kanye namathileyi okuchitheka yindlela abakhiqizi abazenzela ngayo lokhu. I-OSHA idinga izinto zokuvimba ilangabi zezindawo ezivuthayo, ama-lining amelana namakhemikhali ezingxenyeni ezibolayo, kanye neminyango evaliwe yama-oxidizer ukuze kugwenywe ukuxubana komhwamuko. Ukuthobela imithetho akuseyona umsebenzi ngoba abasebenzi bangafinyelela ngokuphephile uhlobo ngalunye ngaphandle kokuhlanganisa izinto ezingafanele.

4. Ukuthobela Imithetho Okusekelwe Kuyo:
Imithethonqubo yokuphepha kwamakhemikhali (i-OSHA e-United States, i-WHMIS eCanada) iqinile, futhi amakhabhinethi ajwayelekile avame ukuthatha izikhawu ezimfushane ukuze onge imali. Izibonelo zifaka phakathi izinto zokuvimba ilangabi ezingekho zezinto ezivuthayo, amathreyi okuchitheka agcwalisa ngaphansi kuka-10% wekhabhinethi, noma ukulebula okungacacile. Ukuthobela imithetho kufakwa kuzo zonke izici ngabakhiqizi abazenzela ngokwezifiso: iminyango ezivala ngokwayo kanye nezithiyo zokuvimba ilangabi ezigunyazwe yi-OSHA, amathreyi okuchitheka asayizi wekhabhinethi, kanye namalebula afanayo “Okubolayo” noma “Okuvuthayo”. Ngokunikeza amadokhumenti esitifiketi sokuhlolwa, aguqula ukuhlolwa komthetho kusuka ezinqubweni ezinzima kube ukusayina okusheshayo. Ukuhlolwa kwe-OSHA kwelebhu eyayisebenzisa amakhabhinethi azenzela ngokwezifiso kwake kwathatha imizuzu eyishumi; abahloli babona izindawo ezinelebula, baqinisekisa isitifiketi, base beqhubeka.

Izinzuzo Zokusebenza Nomkhiqizi Wekhabhinethi Yokuphepha Kwamakhemikhali Okwenziwe Ngokwezifiso
Ukudala indawo ephephile nehlakaniphe kakhulu kuwumgomo wokusebenza nomenzi wamakhabethe okuphepha amakhemikhali enziwe ngokwezifiso, hhayi nje ukuthola indawo yokugcina amakhemikhali. Nakuba amakhabethe ajwayelekile “engabamba” amakhemikhali akho ngokombono, avame ukungasebenzi kahle ezindleleni ezisebenzayo. Ngokuphambene nalokho, amakhabethe enziwe ngokwezifiso enzelwe ukulingana nendawo yakho ngokunembile, abambe amakhemikhali aqondile owadingayo, futhi enze kube lula imisebenzi yansuku zonke ephephile futhi elula.
Zinezici ezicatshangelwe kahle njengezitsha zokuchitheka ezakhelwe ngaphakathi, izinhlelo zokungenisa umoya ezihlangana kalula nokusethwa kwelebhu yakho, kanye nezingxenye ezihlukene zamakhemikhali angahambisani.
Ngenxa yokuthi amakhabethe akhiwe ngezinto ezingaphatha amakhemikhali akho ngempela, kunezinkinga ezimbalwa, ukuhlanza okusheshayo, kanye namakhabethe ahlala isikhathi eside. Ukuphepha kuba ngokoqobo, kuthembeke, futhi kuqondene neqembu ngesisombululo esiyingqayizivele.

Isiphetho: Ukuphepha Okukhulu Kufanelwe Amakhabethe Amahle
Izingcezu zekhabhinethi ezindala ezijwayelekile, njengeshalofu eligqwalile nelimele, zigcinwa amaqembu amaningi okuphepha njengezinsiza zokufundisa. Zibonisa abaqashi abasha ukuthi kulula kangakanani ukuhlukana kwemiklamo ejwayelekile: izingxenye ezilodwa ezikhuthaza izinhlekelele, insimbi egqwalile, kanye namapani okuchitheka angekho. Ngokuphambene nalokho, amakhabhinethi enziwe ngokwezifiso aba yinto ebalulekile yokusebenza kwansuku zonke: izingxenye ezinelebula zenza kube lula ukuhlola okusheshayo kwempahla; amayunithi okugoqa ahamba ngemigqa yokukhiqiza, futhi amayunithi amancane alingana nama-lab aqinile. Avame ukusetshenziswa ngoba ahambisana nendlela ibhizinisi elisebenza ngayo, ngakho awahlali nje emakhoneni.
Ngaphezu kwalokho, yonke ikhabhinethi eyenziwe ngokwezifiso enhle kakhulu inomenzi okhathalela njengawe ukuphepha kweqembu lakho. Bakha ukwethembana hhayi amabhokisi ensimbi kuphela. Yiba nokholo lokuthi ikhabhinethi ngeke ichitheke, ukuthi izolandela imithetho, nokuthi ithimba lakho lizoyisebenzisa ngoba ifanela izidingo zabo. Indawo yokusebenza ephephile yakhelwe kulokho kwethemba.