Aromatawai i te pānga o te 4,4′-methylene-bis-(2-chloroaniline) “MOCA” ki ngā mahi mā te whakamahi i tētahi tikanga hou mō te aro turuki koiora.

Kua angitu te whakawhanake i tētahi tikanga tātari hou, e tohuhia ana e te tino motuhake me te kaha o te aro, hei whakatau i te 4,4′-methylene-bis-(2-chloroaniline), e mōhiotia whānuitia ana ko "MOCA," i roto i te mimi tangata. He mea nui kia mōhio ko te MOCA he matū whakaputa mate pukupuku kua tuhia pai, me ngā taunakitanga paitini kua whakapumautia e whakaū ana i tōna kaha whakaputa mate pukupuku i roto i ngā kararehe taiwhanga pērā i te kiore, te kiore, me ngā kurī.

I mua i te whakamahinga o tēnei tikanga hou i roto i ngā mahi o te ao tūturu, i whakahaerehia tuatahitia e te tīma rangahau tētahi rangahau wā poto mā te whakamahi i ngā kiore. Ko te whāinga matua o tēnei rangahau haumanu-mua ko te tautuhi me te whakamārama i ētahi āhuatanga matua e pā ana ki te tukunga o te MOCA i roto i te mimi i roto i te tauira kararehe—tae atu ki ngā āhuatanga pēnei i te tere tukunga, ngā ara pākia, me te wā mō ngā taumata ka kitea—e whakatakoto ana i tētahi turanga pūtaiao pakari mō te whakamahinga o te tikanga i roto i ngā tauira tangata.

Whai muri i te otinga me te whakamanatanga o te rangahau haumanu-mua, i whakamahia mana tēnei tikanga kimi mimi hei aromatawai i te nui o te pānga o te MOCA ki ngā kaimahi i ngā umanga ahumahi Wīwī. I hipokina e te whānuitanga o te rangahau ngā momo mahi matua e rua e pā tata ana ki te MOCA: ko tētahi ko te tukanga whakaputa ahumahi o te MOCA tonu, ā, ko tētahi ko te whakamahinga o te MOCA hei rongoā i roto i te hanga elastomers polyurethane, he whakamahinga noa i roto i ngā ahumahi matū me ngā rauemi.

I roto i te whakamātautau nui o ngā tauira mimi i kohia mai i ngā kaimahi i roto i ēnei āhuatanga, i kitea e te tīma rangahau he whānuitanga o ngā rerekētanga o ngā taumata whakaputanga mimi o te MOCA. Ina koa, ko ngā kukū whakaputanga i ahu mai i ngā taumata kāore e kitea—i tautuhia he iti iho i te 0.5 maikirokaramu ia rita—ki te mōrahi o te 1,600 maikirokaramu ia rita. Hei tāpiri, i te wā i kitea ai ngā matū N-acetyl o te MOCA i roto i ngā tauira mimi, he iti iho tonu, he iti iho hoki ō rātou kukū i ngā kukū o te matū matua (MOCA) i roto i ngā tauira kotahi, e tohu ana ko te MOCA tonu te āhua tuatahi i whakaputahia i roto i te mimi, ā, he tohu pono ake mō te pānga.

I te nuinga o te wā, ko ngā hua i puta mai i tēnei aromatawai pānga mahi nui i te āhua nei he whakaata tika, he whakaata tika hoki i ngā taumata pānga MOCA whānui o ngā kaimahi i rangahautia, nā te mea he hononga tata ngā taumata paru i kitea ki te āhua o tā rātou mahi, te roa o te pānga, me ngā āhuatanga o te taiao mahi. I tua atu, ko tētahi kitenga nui mai i te rangahau ko te otinga o ngā whakataunga tātari me te whakatinanatanga o ngā mahi ārai i ngā wāhi mahi—pērā i te whakapai ake i ngā pūnaha hauhautanga, te whakarei ake i te whakamahinga o ngā taputapu tiaki whaiaro (PPE), te arotau rānei i ngā mahi tukanga—he maha ngā wā i kitea he hekenga mārama me te nui o ngā taumata paru mimi o te MOCA i roto i ngā kaimahi e pāngia ana, e whakaatu ana i te whai huatanga o ēnei wawaotanga ārai ki te whakaiti i te pānga mahi ki te MOCA.