Ka taea te wehewehe i te hauota-15 mā te whakamahi i te centrifuge hau
Ka taea te wehe i te hauota-15 mā te whakamahi i te pūwero hau?
Kupu Whakataki
Ko te hauota, tētahi o ngā huānga tino nui i te āhuarangi, he mahi nui tāna i roto i ngā tukanga koiora me ngā tukanga matū. I roto i ōna isotopes, kua nui te aro ki te hauota-15 (N-15) nā ōna āhuatanga ahurei me ōna whakamahinga i roto i te rangahau pūtaiao. Kua roa ngā kaipūtaiao e tūhura ana i ngā tikanga maha hei wehe me te whakawhāiti i te N-15 mō ngā kaupapa maha. I roto i tēnei tuhinga, ka rukuhia e mātou te āheinga ki te wehewehe i te N-15 mā te whakamahi i te centrifuge hau, he tikanga e whakamahia whānuitia ana mō te wehenga isotopes. Ka matapakihia hoki e mātou ngā whakamahinga me ngā pānga pea o tēnei whanaketanga i roto i te mara o te rangahau pūtaiao.
1. Te Mārama ki te Hiranga o te Isotope Hauota-15
He rerekē te hauota-15, he isotope o te hauota, i te hauota-14 e kitea whānuitia ana nā te mea he irahiko tāpiri kei roto. Nā tēnei rerekētanga iti o te papatipu ngota, ka waiho te N-15 hei taputapu tino nui i roto i ngā momo kaupapa pūtaiao, tae atu ki te koiora, te matū, me te rangahau taiao. He maha ngā wā ka whakamahia e ngā kairangahau te N-15 hei tohu i te huringa hauota, te mimiti matūkai i roto i ngā tipu, me ngā pūtake parahanga hauota. Heoi, ko te iti o te N-15 he wero nui ina ngana ana ki te tātari isotopic, ki te whakahaere rānei i ngā whakamātautau e hiahia ana ki ngā kukū teitei ake.
2. Te Tūranga o te Pūwhakapūngao Hau i roto i te Wehenga Isotope
Ko te whakapūnga hau e uru ana ki te wehenga o ngā isotope i runga i ō rātou rerekētanga papatipu mā te kaha whakapūnga. Kua whakaatuhia e tēnei tikanga te angitu whakamiharo ki te wehewehe i ngā momo isotope, pērā i te uranium me te waro, mō te whakaputa pūngao karihi me te rangahau hauora. I runga i te angitu o te whakapūnga hau i roto i te wehenga isotope, kua tūhuratia e ngā kaipūtaiao tōna whakamahinga pea mō te wehewehe i te N-15.
3. Ngā Wero i roto i te Wehenga Isotope Hauota-15
Ahakoa kua kitea te whai huatanga o te centrifugation hau ki te wehewehe i ngā isotopes motuhake, he uaua te wehenga o te N-15 nā ōna āhuatanga ngota. Ko te nui ake o te hauota-15 he 0.37% noa iho i te N-14, ā, he uaua ki te whakatutuki i te wehenga nui mā roto i ngā tikanga centrifuge hau tuku iho. Ko te hiahia mō te tere teitei me te tika i roto i te tukanga wehenga ka meinga te hauota…
.