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1、常用同位素性質(zhì)列表放射性核素半衰期射線類型3H12.4yearsβ-7Be53.3daysECa11C20.5minβ+14C5760yearβ-22Na2.6yearβ+γ24Na14.8hβ-γ28Mg21.4hβ-31Si170minβ-32P14.3daysβ-33P25daysβ-35S87.4daysβ-36Cl310000yearsβ-κ38Cl38.5minβ-γ42K12.4hβ-γ45Ca165daysβ-γ47Ca4.54daysβ-51Cr28daysγκ52Mn5.8da
2、ysβ+γ54Mn310daysγκ55Fe2.94yearsκ57Co270daysγ58Co72daysβ+γ59Fe46.3daysβ-γ60Co5.3yearsβ-γ63Ni100yearsβ-64Cu12.8hβ-β+γκ65Zn250daysβ+κ75Se121daysγκ76As26.8hβ-γ82Br36hβ-γ86Rb18.7daysβ-γ89Sr51daysβ-90Sr28.5yearsβ-99Mo68hβ-γ109Cd462daysECa110Ag249.8daysβ-111
3、Ag7.47daysβ-113Sn115.1daysECa115Cd44.6daysβ-125I60.0daysγECa131I8.04daysβ-γ133Ba10.8yearsECa134Cs2.06yearsβ-135I9.7hβ-137Cs30.17yearsβ-185W75.1daysβ-197Hg64.4hECa198Au2.696daysβ-199Au3.13daysβ-203Hg46.6daysβ- 同位素檢測(cè)方法同位素介質(zhì)檢測(cè)方法3H瓊脂糖凝膠閃爍計(jì)數(shù) 聚丙酰胺凝膠 硝酸纖維素膜
4、,濾紙 14C/35S瓊脂糖凝膠fluorography(formax.sensitivity)or 聚丙酰胺凝膠放射自顯影(可獲較高的分辯率) 硝酸纖維素膜,濾紙放射自顯影32P/125I瓊脂糖凝膠放射自顯影(用增感屏) 聚丙酰胺凝膠(formax.sensitivity)ordirect 硝酸纖維素膜,濾紙放射自顯影(可獲較高的分辯率)同位素在試驗(yàn)中的應(yīng)用應(yīng)用同位素檢測(cè)方法DNA/RNA打點(diǎn)雜交32P放射自顯影(用增感屏)DNA序列測(cè)定32P放射自顯影 35S放射自顯影原位雜交32P放射自顯影
5、 35S放射自顯影 3H放射自顯影體外蛋白質(zhì)合成14C/35S閃爍計(jì)數(shù) 3H閃爍計(jì)數(shù)噬斑和菌落的篩選32P放射自顯影(用增感屏) 35S放射自顯影SouthernandNorthern雜交32P放射自顯影(用增感屏) 35S放射自顯影(用增感屏)Westernblots3H閃爍計(jì)數(shù) 14C/35S放射自顯影 125I放射自顯影(用增感屏)常用同位素理化性質(zhì),檢測(cè)方法單位換算Curies和d.p.m的換算.1Curie(Ci)=2.22×1012d.p.m.1milliCurie(mCi)=2.22
6、×109d.p.m.1microCurie(mCi)=2.22×106d.p.m.1nanoCurie(nCi)=2.22×103d.p.m.1picoCurie(pCi)=2.22d.p.m.Curies和Becquerels的換算1Ci=3.7×1010Bq=37GBq(gigaBq)1mCi=3.7×107Bq=37MBq(megaBq)1mCi=3.7×104Bq=37kBq(kiloBq)1GBq=2.7×10-4Ci=27.027mCi(milliCi)1MBq=2.7×10-7Ci=
7、27.027mCi(nanoCi)1kBq=2.7×10-10Ci=27.027nCi(nanoCi)