Silent Killer: Njodzi Yekuoma Ice muFresh Food Transport

Chinyararire Kutyisidzira Upenyu

Nyaya inotyisa inotanga manheru emusi waChikumi 15 muRuwa rweHenan, uko motokari yefiriji yakatakura chikafu chitsva yakava nzvimbo yenjodzi yakanyarara. Vashandi vasere vechikadzi vakawanikwa vasina chavanoziva mukamuri yakavharirwa, ine kudziya kwakaderera. Vakuru vanofungidzira kudonha kweaizi yakaoma kwakakonzera kushaikwa kweokisijeni, zvichikonzera kufemereka uye, pakupedzisira, kufa kwavo nekukasira. Nepo ongororo dzichiri kuenderera mberi, chiitiko ichi chinosimbisa njodzi isingatarisirwe yeaizi yakaoma munzvimbo dzakavharirwa.

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Chii Chinonzi Dry Ice?

Kune vakawanda, "chando" chinopa mifananidzo yechinwiwa chinozorodza chezhizha. Asi mune zvesainzi, aizi inotora chimiro chinofadza zvikuru. Dry ice, iyo yakasimba fomu yecarbon dioxide (CO₂), yakatanga kuwanikwa muna 1835 neFrench chemist Charles Thilorier. Akacherechedza kuti CO₂ yemvura, pakubuda kwemhunga, yakasiya chisaririra chakasimba-yatinoziva zvino sechando chakaoma.

Kusiyana neaizi yenguva dzose, iyo inonyunguduka mumvura, chando chakaoma chinodonha kubva pakasimba kusvika kune gasi pa -78.5 ° C, ichisiya pasina mvura inosara. Ichi chivakwa chaita sarudzo yakasarudzika yekutakura zvinhu zvinoparara senge ice cream uye zvekurapa.


Ngozi Dry Ice

Pasinei nekushandiswa kwakapararira, aizi yakaoma inopa ngozi yakanyarara. CO₂ igasi risina ruvara, risinganhuhwi rinorema kudarika mweya, zvichiita kuti rigare pasi penzvimbo dzakapoteredzwa. Munzvimbo dzisina kufefeterwa nemhepo, sublimating yakaoma ice inobvisa okisijeni, zvichitungamira ku hypoxia (yakaderera okisijeni mazinga) uye kuwedzera kweCO₂ concentration.

Zviratidzo zveCO₂ Overexposure:

  • Kudikitira
  • Kukurumidza kufema
  • Mwoyo palpitations
  • Kutadza kufema
  • Kufenda

Kana CO₂ mazinga anopfuura2%, zviratidzo zvinova pachena. At5%, gasi rinoita kuti munhu aite narcotic. Pamusoro8–10%, kufenda uye kufa zvinogona kuitika mumaminitsi mashoma.

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Zviitiko Zvoupenyu Chaiye

Nhau dzinosiririsa dzekusabatwa zvakanaka kweaizi dzinoratidza kugona kwayo kunouraya:

  1. 2004 Hurricane Ivan: Mumwe murume akashandisa 45 kg yeaizi yakaoma kuchengetedza chikafu mumotokari yake panguva yekudzima kwemagetsi. Kusafefetera zvakanaka kwemotokari kwakaita kuti CO₂ mazinga akwire, zvichimusiya afenda kusvika anunurwa.
  2. 2022 Lab Tsaona: Mumwe mudzidzi akapedza kudzidza paYunivhesiti yeCalifornia akafenda achibata aizi yakaoma mumudziyo wakadzika. Kunyangwe apora, chiitiko ichi chakamusiya aine PTSD, zvichisimbisa kurwadziswa kwepamoyo uye kwemuviri kwekuratidzwa kweCO₂.

Nei CO₂ Iine Ngozi

Iyo molecular huremu hweCO₂ inoita kuti ive yakaoma kupfuura mhepo, zvichiita kuti iungane munzvimbo dzakaderera. Sezvo CO₂ kusungwa kunowedzera, mazinga eokisijeni anodonha, zvichikonzera mhedzisiro yemuviri senge hyperventilation, kuderedzwa kweropa pH, uye kukanganisa kwemoyo uye tsinga system.

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Kudzivirira Matanho

  1. Kufefetera Kwakakodzera: Nguva dzose bata chando chakaoma munzvimbo dzine mhepo yakanaka kudzivirira CO₂ kuunganidza.
  2. Yambiro Labels: Vatengesi vanofanira kunyora zvakajeka mumidziyo ine yambiro yengozi kuti vazivise vashandisi nezvenjodzi.
  3. Consumer Awareness: Dzivisa kuchengeta kana kushandisa aizi yakaoma munzvimbo dzakapoteredzwa, senge mota kana makamuri madiki.

Mhedziso

Dry ice chishandiso chakakosha chekuchengetedza chikafu uye maindasitiri maitiro, asi njodzi dzayo munzvimbo dzakavharirwa dzinowanzo furatirwa. Iri gasi risingaoneki, risinganhuhwi rinogona kuuraya mukati memaminitsi mashoma kana rikasabatwa zvakanaka. Kusimudza ruzivo uye kusimbisa matanho ekuchengetedza kwakakosha kudzivirira njodzi dzakafanana.


Nguva yekutumira: Nov-25-2024