
technicium-99

technicium-99 (99tc) anedi technicium yokka isotope, idhi 211,000 samvatsaraala ardha-jeevitamto ksheeninchi sthiramaina ruthenium-99kii ksheenistundi, beata kanaalanu vidudala chestundi, conny gaama kiranaalu laevu. idhi euranium vichchitti yokka atyanta mukhyamaina deerghakaalika vichchitti utpatti, idhi anhu vyardhaala yokka mottam deerghakaalika vikirana udgaralalo atipedda bhaganni utpatti chestundi. euranium-235 yokka ushna neutron vichchitti kosam technicium-99 vichchitti utpatti digubadi 6.0507% kaligi undhi.
metastable technicium-99 mea (99 emm. tii. sii) anedi molybdinum-99 nundi utpatti cheyabadina anhu vaidyamlo upayoginche swalpakaalika (sagam jeevitam sumaru 6 gantalu) anhu isomer. idhi technicium-99kii isomeric parivartana dwara ksheenistundi, idhi kavalsina lakshanam, endukante technicium-99 yokka chaalaa sudeergha ardha jeevitam mariyu kshayam yokka rakam sareerampai konchem ekkuva radiation bharanni vidhistundi.
radiation.
balaheenamaina beata udgaaram prayogasaala gaaju saamaanu godala dwara aapabadutundi. beata kanaalanu apinappudu mruduvaina ex-kiranaalu vidudalavutaayi, conny sariiraanni 30 centimeters kante ekkuva dhooramlo unchinanta varaku ivi etuvanti samasyanu kaliginchakudadu. techniciumtho pani chesetappudu praadhamika pramaadam dhooli peelchadam; oopiritittulalo ituvanti rediyodhaarmika kalushyam gananeeyamaina cancer pramaadaanni kaligistundi.
anhu vyardhaalalo paatra.
adhika vichchitti digubadi, saapekshamgaa sudeergha ardha-jeevitam mariyu paryaavaranamloo chalanasheelata kaaranamgaa, technicium-99 anhu vyardhaalalo atyanta mukhyamaina bhagalalo okati. kharchu chesina indhanaaniki beckwerellalo kolustaaru, idhi anhu vyardhaalu srushtinchina 104 nundi 106 samvatsaraala kaalamlo radiation yokka pradhana utpattidaaru. tadupari athi takkuva kaalam jeevinche vichchitti utpatti 90 samvatsaraala ardha-jeevitamto kuudina samarium-171, ayithe neutron sangraham dwara utpatti cheyabadina aneka actinidelu madhyantara paridhiloo ardha-jeevitaalanu kaligi untaayi.
vidudalalu.
1994 varaku vaataavarana anhu pareekshala dwara 160 tbq (sumaru 250 kilolu) technicium-99 paryaavaranamloki vidudala cheyabadindi. 1986 varaku paryaavaranamloki vidudala chesina poura anushakti nundi technicium-99 mottam 1000 tbq (sumaru 1600 kilolu) kramamlo untundani anchanaa veyabadindi, pradhanamgaa anhu indhana punahprasesingh yokka paatha paddhatula dwara; indulo ekkuva bhaagam samudramloki vidudala cheyabadindi. iteevali samvatsaraalalo, udgaaraalanu tagginchadaaniki punahprasesingh paddhatulu merugupaddayi, conny paryaavaranamloki technicium-99 yokka praadhamika vidudala sael feeled plant dwara jarigindi, idhi 1995-1999 nundi airish samudramloki 550 tbq (sumaru 900 kilolu) nuu vidudala chesindi. 2000 nundi eee mottaanni regulation dwara samvatsaraaniki 90 tbq (sumaru 140 kilolu) kuu parimitam chesaaru.
paryaavaranamloo.
technicium-99 yokka sudeergha ardha-jeevitam mariyu ionic jaatulanu yerparuchukune daani saamarthyam adhika-sthaayi rediyodhaarmika vyardhaalanu deerghakaalikamgaa paaraveyadaanni parigananaloki teesukunnappudu (129i thoo paatu) dheenini pradhana aandolanagaa chestaayi. punarviniyoga karmagaralalo madhyastha-kriyaaseela prakriya pravaahaala nundi vichchitti utpattulanu tolaginchadaaniki roopondinchina aneka prakriyalu seesiyam (udhaa.zii., 137sii, 134sii) mariyu strontium (udhaa.zii., 90sr). anduvalla perr technite eee chikitsa prakriyala dwara tappinchukuntundi. prastuta paaraveyadam empikalu bhougolikamgaa sthiramaina raatilo khananam cheyadaaniki anukuulamgaa untaayi. atuvanti maargamlo praadhamika pramaadam emitante, vyardhaalu neetitho sambandham kaligi unde avakaasam undhi, idhi rediyodhaarmika kalushyanni paryaavaranamloki karche avakaasam undhi. neelala sahaja katayan-marpidi saamarthyam plutonium, euranium mariyu seesiyam katayan lanu sthireekaristundi. ayithe, ayan-marpidi saamarthyam saadhaaranamgaa chaalaa takkuvagaa untundi, kabatti khanijalu pertenetate mariyu iodide ayaanlanu grahinche avakaasam takkuvagaa untundi, tadwara avi mattiloo kadulutaayi. eee kaaranamgaa, technicium yokka paryaavarana rasayana shaastram parisoedhanaloo churukaina rangam.
2012loe spatikaakaara sammelanam notre dame thorium borate-1 (ndtb-1) nuu notre dame vishwavidhyaalayamloni parisoedhakulu samarpinchaaru. anhu vyardhaala pravaahaala nundi rediyodhaarmika ayaanlanu surakshitamgaa grahinchadaaniki dheenini roopondinchavacchu. okasari swaadheenam chesukunna tarvaata, rediyodhaarmika ayaanlanu adhe parimaanamlo unna adhika-chaarj jaatulaku marpidi chesukovacchu, padaarthaanni tirigi upayoginchadaaniki recycling cheyavachu. ndtb-1 spatikaalanu upayoginchi prayogasaala phalitaalu sumaru 96 saatam technicium-99 nuu tolaginchaayi.
parivartana.
oka pratyaamnaaya paaraveyadam paddhati, parivartana, technicium-99 kosam sern vadda pradarsinchabadindi. eee parivartana prakriya newtraanlatho technicium (loha lakshyamgaa) paie bambu daadi chestundi, swalpakaalika (sagam-jeevitam 16 sekanlu) nuu yerparustundi, idhi beata kshayam dwara sthiramaina ruthenium () gaa ksheenistundi. ruthenium yokka saapekshamgaa adhika market viluva mariyu technicium yokka mukhyamgaa avaanchaneeya lakshanaalanu batti, eee rakamaina anhu parivartana mukhyamgaa asajanakamga kanipistundi.

