Strontium 90: Hawhe-ora. Strontium - radionuclide

I roto i te 1787, e kore e matara atu i te Strontsian whakataunga Kotimana i roto i te taku mō te tangohanga o te mata i kitea ki runga ki taua wa kohuke unknown. I roto i te honore o te kainga i huaina ai strontianite. Na ka hoatu e te ingoa o te pūtaiao strontium huānga matū i roto i te kororia o tenei kohuke. He aha e ona āhuatanga atu kia whai hua kino ranei te rawa?

Ko te rangahau tuatahi o te strontium

I muri te whakatuwhera kaipūtaiao strontianite pēnei tenei kohuke ki ngā kāwai rerekē. whakaaro etahi e no ia ki te fluorite, etahi - ki witherite. Heoi, he iti i muri atu i te mārama e pā ana ki tenei mea kua kawea mai e te hop kēmihi T. Kotimana. Na kihai i mohiotia ai e kia whai i te hawhe-ora te taonga whakamātautau. Kua hoki i Strontium te ahanoa o ako o te kēmihi Lavoisier, ko Gemfri Devi. He wāhi nui ki te kitea o tenei rauemi i tuku ano hoki e te pūtaiao Russian Toviem Lovitsem. Ia ahakoa o ritenga Western, whakakitea te aroaro o tenei whakarewa i roto i te tira rākau taimaha.

He moka o te ariā. He aha te mea te hawhe-te ora?

Te tangata e matau e te radionuclide huaina radioisotopes tenei ra. He aha te mea te hawhe-te ora? E kitea Radionuclides i ētahi atu matū i roto i taua he ratou karihi iu. Neke atu i te wā whatiia e ratou iho - te tukanga o te mehanga iratuki. I roto i tenei tukanga, kua tahuri te karihi ki ētahi atu kanoirite, a ko te kupu i te tukunga o hihi iraruke. Ētahi atu radionuclides whai taumata rerekē o te pähekeheke. He kanoirite poto-ora, me te roa-ora. pirau Poto-ora rawa hohoro: tenei e hēkona, ra ranei nga marama. Hoki rau te roa-e hiahiatia ana, mano, ranei ara miria o tau. Ka rite ki ki te nui i tangohia kanoirite ranei ki wahia hawhe o tona taonga, kua hiahiatia tonu reira he tetahi wā o te wā - e kiia ana ko te hawhe-ora.

He aha te mea te hawhe-ora o strontium-90?

Ka rite ki mohiotia te, e tino kino ki te hauora o matū nga radionuclides me kanoirite. Ka rite ki hoki strontium, he whakaritea ona kanoirite pūmau kahore ati ki te tangata. Ko kanoirite iraruke ahei o whakangaro ora katoa. Ko te take e tetahi o nga momo tino kino o te strontium - Kaumātua-90 - he mōrearea - ko reira ona hawhe-ora. pirau Strontium-90 i runga i 29 tau, me te haere tahi tonu tenei tukanga i te tuku o nui o radiation. Tenei huānga He te kaha ki te whakauru hohoro ki te pūnaha o kaiao ora me metabolized.

āhuatanga o strontium

Strontium i roto i te rangi rawa hohoro tauhohe ki te wai, hipoki ki kōwhai kiriata waikura. I roto i te puka free, e kore e kitea i tenei huānga i roto i te natura. Kei ona putunga nui i roto i Russia, Arizona, California (USA). Strontium Ko te whakarewa ngohengohe - te reira ngāwari ki te tapahia te kuware maripi. Ko tona pāmahana rewa ko 768 ° C. Alloys ngā strontium nei hanganga, whakamahia i roto i pyrotechnics. I tua atu i tenei huānga whakamahia te ki ora konukarihi.

Ko te kătahi o strontium i roto i ngā kaiao ora

E ai ki o ratou āhuatanga matū ko te tino rite ki te konupūmā noa Strontium - ko ona tata he tairitenga tenei huānga. Kei te tino tere takoto Strontium-90 i roto i te wheua, niho, me te i roto i te wai. I roto i te pirau o te huānga e hanga e hoki kanoirite tamahine yttrium-90 e he poto rawa hawhe-ora. e kore e taea te whakarite Strontium i roto i tenei tawhā ki yttrium-90, e horo i roto i tika 64 haora.

Yttrium-90 e taea emit matūriki peta. Ko reira ano rawa hohoro pānga te wheua, me te he rawa tairongo ki tona wheua wheua. I raro i te mana o te radiation kaha i roto i tetahi rauropi ora pangia huringa whaiaroaro nui. Te huri i hanganga pūtau, ano tino ohorere hanganga pūtau, e hua i roto i te huringa i roto i te pākia e. Na reira, ko te pātai o pehea te roa te hawhe-ora o strontium-90 e kore he mangere,. I te pae hopea, arata'i tenei ki te mate pukupuku pūtau toto (kanisā), me wheua. A hoki ko reira e taea ki te faaitoito i te mana kaha i runga i te hanganga o te DNA me iranga.

Ko te tere o te whakatö i roto i te natura

Belgium ki strontium-90 puta i roto i te wa poto, rite te mea he poto rawa te hawhe-ora. Strontium i hanga i muri rave rahi technogenic tuku i runga i mekameka kai koiora no pangia reira te whenua, me te wai. Kanoirite hoki ngāwari te ô i ki te wahi romahā o te kararehe, me te tangata. strontium-90 i te whenua hohoro tomo te tinana o te kararehe, otaota, a ka i roto i te tinana o te iwi e tango nei kai poke. I tua atu i tenei kanoirite ko e taea e kore noa ki te whakangaro i te tetahi rauropi, engari ano hira tuku ona uri. Kei te tuku hoki Strontium-90 i te waiu ki te tamaiti o whaea.

Kua Kua whai wāhi tēnei kanoirite i te pākia o ngā tipu. whiwhi te mea i ratou i te oneone i roto i to ratou pakiaka. He nui rawa nui o strontium whakaemi enei momo o ngā tipu pērā i ngā rekiumu, pakiaka me ngā kōpura. I roto i te tangata, piki strontium te nuinga i roto i te kōhiwi. Ki te tau, tuku iho te maha o tārewa strontium. I roto i nga tangata, i te kanoirite kohikohi neke atu i te wahine.

Ko te kanoirite tino mōrearea

Āpiti atu ki caesium-137 Strontium-90 ko tetahi o te täoke iratuki tino mōrearea, me te tino kaha he nohopuku hawhe-ora. Kei te maha Strontium-90 tukua ki te taiao rite ki te hua o aituā i tipu te mana karihi me whakamātautau karihi. faingataa te āhuatanga e te meka e he tino uaua ki te whakatau i te aroaro o tenei kanoirite, ara i roto i nga tauira oneone. Haunga te caesium, kitea kama radiation te i te tino ngāwari ki te whakatau hiahiatia te Kaumātua-90 ihirangi o te oneone i te iti rawa i te wiki.

I roto i tenei tauira ako o te oneone aivanaa ahuwhenua ranei tahuna i roto i te ara motuhake, me muri anake e taea tatou te kōrero e pā ana ki mehemea reira kei roto i tenei tauira strontium. Ko te kore e tino tenei tikanga e tika ana, ina e hiahia ana koe ki te tautuhi i te nui o kanoirite riro e te tinana tangata. Hoki te tātaritanga o nga kaiputaiao Belarusian kua whakaaro te potae motuhake, rēhita he radiation peta.

Pā strontium-90 huānga

Ko te tata i roto i ona āhuatanga faatura tenei i roto i he konganuku caesium-137 me strontium-90. Ko te hawhe-ora o 30 tau he caesium-137. A, no te fakatamaki radiation, enei āhuatanga e rua ki te hanga i te maha rawa o ngā raruraru. Kei te whakapono te reira e te mau faahopearaa ino o te Chernobyl caesium kama-kaha aituā he hara nui atu i strontium. Homai te hawhe-ora o enei matū, e taea te mea te reira e reira kia kia e te iti rawa e ono rau nga tau i mua i roto i te rohe Chernobyl kia mahue o enei kanoirite.

Ko te hawhe-ora kanoirite Āhuatanga

Hoki ia taonga tino tautuhi kanoirite hawhe-ora. Strontium-90 he wā o te 28 tau. Heoi, e kore e tenei tikanga e ka ngaro katoa o ona ngota i muri i 56 nga tau. nui hoki te tūranga o te nui tuatahi o te kanoirite. I roto i te parariraa o etahi o te strontium e taea te huri, tahuri ki huānga mama. Ki te te hawhe-ora o strontium iraruke ko 28 nga tau, i tenei tikanga te whai.

Na roto i tenei wā o te wā i te nui tuatahi o te kanoirite ka kia hawhe. Ahakoa i muri i 28 tau - he hauwhā, a na i runga i. Huri i te reira i roto i e taea strontium paru i te taiao mō te tekau tau. Kua häunga ētahi aivanaa tenei tau ki te tohu e te hawhe-ora o strontium - 29 tau. Na roto i tenei wā o te wā ko te hawhe i runga i te taonga, engari he reira nui ki te strontium horapa tawhiti tua atu i te ati.