常用同位素性质

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1、常用同位素性质列表放射性核素半衰期射线类型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-　同位素检测方法同位素介质检测方法3H琼脂糖凝胶闪烁计数　聚丙酰胺凝胶　　硝酸纤维素膜

4、，滤纸　14C/35S琼脂糖凝胶fluorography(formax.sensitivity)or　聚丙酰胺凝胶放射自显影（可获较高的分辩率）　硝酸纤维素膜，滤纸放射自显影32P/125I琼脂糖凝胶放射自显影（用增感屏）　聚丙酰胺凝胶(formax.sensitivity)ordirect　硝酸纤维素膜，滤纸放射自显影（可获较高的分辩率）同位素在试验中的应用应用同位素检测方法DNA/RNA打点杂交32P放射自显影（用增感屏）DNA序列测定32P放射自显影　35S放射自显影原位杂交32P放射自显影

5、　35S放射自显影　3H放射自显影体外蛋白质合成14C/35S闪烁计数　3H闪烁计数噬斑和菌落的筛选32P放射自显影（用增感屏）　35S放射自显影SouthernandNorthern杂交32P放射自显影（用增感屏）　35S放射自显影（用增感屏）Westernblots3H闪烁计数　14C/35S放射自显影　125I放射自显影（用增感屏）常用同位素理化性质，检测方法单位换算Curies和d.p.m的换算.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的换算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)