Ntawm cov neeg tsim tsa thiab cov neeg zoo ib yam muaj lub ntsiab lus tsis tu ncua txog lub ntuj ntawm cov roj zeb ci, qhov tsis txaus ntseeg ntawm nws txoj kev siv hauv kev tsim kho vaj tse thiab kev teeb tsa, tshwj xeeb tshaj yog thaj chaw. Lub xaib txog ntuj pob zeb https://kamnemir.ru txheeb xyuas qhov teeb meem no kom paub meej. Qhov xaus yog qhov tseem ceeb: kev ntshai txog lub radioactivity ntawm granite yog exaggerated zoo heev.
Vim li cas granite radioactive?
Granite yog tsim thaum lub sijhawm txias thiab crystallization ntawm magma. Lub ntsiab tseem ceeb ntawm cov khoom siv hluav taws xob ntawm lub pob zeb yog quartz (silicon oxide), uas suav nrog cov oxides thiab ntsev ntawm cov pa hluav taws xob, nrog rau cov xov tooj cua ntawm cov isotopes ntawm cov ntsiab lus ruaj khov ntawm lub rooj nthuav dav. Tsis tas li ntawd nyob rau hauv cov qauv ntawm granite yog molecules ntawm cov pa roj carbon monoxide radon.
Qhov phom sij ntau tshaj plaws rau tib neeg thiab txhua yam muaj sia yog uranium. Granite yog khawb ntawm qhov tsis zoo "uranium mines". Cov ntsiab lus uranium hauv lub pob zeb yog qhov tsis txaus ntseeg. Yuav kom tau txais cov ntaub ntawv nyoos rau lub chaw tsim hluav taws xob nuclear lossis foob pob tawg, yuav tsum muaj cov khoom siv kim thiab kim.
Radon yog qhov thib ob txaus ntshai tshaj plaws. Nws yog qhov tsawg dua hauv pob zeb dua li uranium, tab sis nws yog roj, thiab thawj sijhawm nws pom seeps rau saum huab cua. Raws li cov kws kho mob, nws yog lub ntuj lossis nce radon keeb kwm yav dhau los uas yog qhov thib ob ua rau muaj tus kabmob tsis zoo ntawm cov pa ua pa tom qab haus luam yeeb.
Lwm lub chaw tsim hluav taws xob (cerium, lanthanum, lwm lub ntiaj teb alkaline thiab lub ntiaj teb tsis tshua muaj hlau) yog tam sim no hauv granite hauv qhov tsis txaus ntseeg thiab muaj yuav luag tsis muaj qhov cuam tshuam rau qhov hluav taws xob tom qab ntawm lub pob zeb.
Hluav taws xob txaus ntshai kev faib tawm ntawm granites
Cov ntsiab lus quartz hauv granite sib txawv ntawm 35-40%. Yog tias nws tsawg dua, lub pob zeb tau xyaum xoom radioactivity, yog tias nws ntau dua, lub pob zeb yuav dhau mus ua qhov txaus ntshai. Kev cia siab ntawm qhov kev tso nyiaj tau txheeb xyuas zoo meej, los ntawm kev txheeb xyuas lub cev thiab lub zog ntawm lub pob zeb, nws tsim nyog rau kev tsim thiab kev tsim txoj hauv kev, qhov feem pua ntawm uranium thiab kev muaj peev xwm ntxiv. Raws li cov txiaj ntsig ntawm txoj kev kawm, qhov tso nyiaj tau txais phau ntawv hla tebchaws.
Raws li qib kev nyab xeeb, ntuj granites mined hauv cov chaw txua txiag zeb tau muab faib ua peb chav kawm:
- Chav Kawm A. Ib qhov kev pom zoo rau kev siv rau kev tsim cov tsev nyob thiab pej xeem cov tsev.
- Chav Kawm B. Lub pob zeb uas tuaj yeem siv rau kev pua kev thiab txhim kho txoj hauv kev tsheb hauv thaj tsam ntawm thaj tsam kev cog lus.
- Chav Kawm C. Hom tsiaj pub rau kev siv hauv kev tsim kho sab nraud ntawm kev sib hais haum.
Txawm hais tias Qib III granite tseem pheej yig dua Qib A thiab B, vim muaj kev pheej hmoo rau tib neeg thiab ib puag ncig, nws tau siv ntau yam tsawg, thiab kev tso nyiaj yog suav tias tsis muaj kev cuam tshuam.
Radioactivity ntawm granite nyob rau hauv cov lej
Xws li ntawm Qib A granite, nws cov kev tawm dag zog tsis dhau 0.05 microsievert hauv ib teev. Yog nws heev lossis me ntsis? Qhov ntsuas pa hluav taws xob ib txwm nyob ntawm hiav txwv rau ib tus neeg yog 0.2-0.25 μSv / h.
Qhov no suav nrog lub hnub ci thiab lub hnub ci tawg (0.035 μSv / h) thiab sib xyaw hluav taws xob (0.16 μSv / h), uas yog, raug rau cov pa hluav taws xob uas tau nkag mus rau hauv lub cev nrog dej, zaub mov thiab cua. Cov seem tsis tseem ceeb 0.01 - 0.06% tsuas yog lees paub los ntawm "kev huam yuaj" koob tshuaj uas noj ntau dhau rau yav dhau los thaum kuaj X-ray lossis tiv tauj nrog lub pob zeb ntuj.
Nws yog ib qho tseem ceeb kom tsis txhob yuav khoom siv raw khoom rau kev tsim kho thiab kho dua tshiab los ntawm cov neeg xa khoom uas tsis tau lees paub. Ib tus neeg muag khoom lub luag haujlwm ntawm granite vuas, cov rooj tog pob zeb ntuj yeej yuav qhia txog daim ntawv pov thawj kev nyab xeeb, uas qhia qhov tshuaj lom neeg ntawm cov khoom lossis cov khoom, nws keeb kwm hluav taws xob. Yog tias koj muaj qhov tsis txaus ntseeg tshwj xeeb, npaj cia rau ntawm Geiger txee thiab tshawb xyuas cov radioactivity ntawm granite lossis lwm lub tsev lossis cov pob zeb kho kom zoo nkauj thaum yuav khoom.
