137 Cs 137m Ba 137 Cs 137m Ba Study on Effects of Prussian Blue Treatment for 137 Cs Internal Exposure by using a New Biokinetic Model of its Progeny

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(1)Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. Cs :.åōƦ 137mBa +ĵ£±ĖhWm*×$ bmOBpamsğx*:=£Ȣǫ-ǁȥů°ŋ+ŒǴ 137. Study on Effects of Prussian Blue Treatment for 137Cs Internal Exposure by using a New Biokinetic Model of its Progeny 137mBa őƋ àȡ* ôŊ ē}** Kentaro UMEDA * and Teiji KOBAYASI ** Prussian blue (PB) is expected to reduce the internal dose following an intake of caesium(Cs) isotopes. Recently updated biokinetic models for Cs are provided. The models include the Cs circulation to alimentary tract through enterohepatic circulation and transfer from plasma and also the biokinetic models for caesium progeny which are different from one for Cs. In this report we simulate behavior of 137Cs and its progeny 137mBa in human body by using the biokinetic models to confirm the efficacy of PB treatment for acute oral intake. We quantitatively discuss the residual activities in tissues, the activities excreted by feces and urine and the mechanism of reducing internal dose by PB treatment.. 1. ,7* ƻÁī¿>įóĒōƦ 137Cs (QOEf 137) ,Ʉ23 100% ôǕ;ǥū*É¾>Ʉ ȋ +Ʈǉ9Ǌǚz*ŶƍrǤƨ>=137Cs +£ ;+ĦŤ,Ʉ{*ǥūǔǚ@Ȗ=ċƈ&Ɖę >=ö@%ǧ?>=ę* = 137Cs +Ɖƀéƒ¶ůń,Ʒ 90 ĸ&řƬ*£;Ū ŵ=Ʉ+ȫ*,£Ȣǫ-@À=[1] £Ȣǫ-ǁȥ@ů;*,Ʉ£*Ŷƍ= 137 Cs +Þ0+ĦŤ@ț)>-);) bmOBpams (Prussian Blue : PB),Ȩ¹æŭ Å¹æȩ'%ŕȘĂFeIII4[FeII(CN)6]3 @ 8#ƀȆ&Ʉ+ƪŨƂNDX*Ȧ÷¹æDGp Ĥģ>9Ʉ137CsɃ)(+ÉƙĤģ*«Ɗ >=)?!Ʉǥū*É¾> 137Cs Ǖ Ǌċƈ9ǥū&ǎǕư*¤¦ť>='Ʉ137Cs @ǎǕư&ÉƙɄƴ@%Þ0+ĦŤ@ ț=Ɗ =7Ʉ137Cs +£ī¿*:=£ Ȣǫ-+ů°ŋ ='ńĆ>ğx> =PB +ğx&Ʉƴ*:<Þ*ĦŤ>= 137Cs +įóǐȥÚ®=',íű&ƟǺ>%. =[2] ¬ØÊ[3]&,ɄǕǊċƈ@¨7%Ǉė Cs * ò = £ ± Ė h W m [4] @ Ɗ Ʉ ICRP (International Commission on Radiological ProtectionɈÓȲįóǁȭȄäÍ )+£Ȣǫ- 2019 Ā 12 ŀ 2 ĸÀƇ * ¢ȖİǌQpTs İĥ ** ()ĵŹßéµéȢ İĥ. 11. ǁȥǸĜŦ[5,6]*×$Ʉ137Cs @ƻÁī¿ ÙÅ+ PB ğx*:=£Ȣǫ-+ů°ŋ* # %ŒǴ@ǧ"ǕǊċƈ&ôǕ*¤¦ť >= 137Cs PB *Éƙ>Ʉƴ'%ĦŤ> =ȝƥ@OeinsOjpɄ£ī¿ć+ PB +ğxĽńɄğxńȫ :3ǫ-ǁȥů °ŋ0+ąȷ@ǹƹ*ǲŉ8+& = ICRP ;¡Ǫ>% = 137Cs +£Ȣǫ- ǁȥ*ò=ǁȥıɁī¿įóǐ 1 BqɁcKn mɂ <+ȹǵǫ-ǁȥ [Sv/Bq] ɂ[7] ,Ʉ ǰōƦ 137Cs +ÜÝɁ¶ůń 30.17 yɂ&Ɖę >=åōƦ 137mBaɁ\lEf 137 +¯ȈƂĖ¶ ůń 2.552m + IT ÜÝ*:< 0.66165MeV +Ip dǁ@į¥ɂ;+£Ȣǫ-8È7ǫ-ǁ ȥı& =137Cs +£Ȣǫ-ǁȥı*ò = 137mBa +ðx, 60%¬ć&¶¦ u@¸7%. =[8]>4&+ 137Cs +£Ȣǫ-ǁȥǸ,Ʉ åōƦ 137mBa , 137Cs 'įóÿǩɁŠƿÿǩ*ȓ. ƂĖɂ* =7Ʉ137mBa +£Ģ±,ǰōƦ 137 Cs 'Æ'ì>Ʉ137mBa *ò% Cs 'Æ £±ĖhWmƊ ;>%+7Ʉ £&Ɖę> 137mBa , 137Cs 'ÆƤǧƻ ȊrƤǧìı&£@ƤǧrŶƍ='Ǹ> %[9] ĿȓɄǕǊċƈ@Ǉė Cs +£±ĖhW m[4] ;*ĮǞ>Ʉ4Ʉ137Cs +åōƦ& = 137mBa +£Ģ±*# %8 137Cs 'Ə)=.

(2) 東北工業大学紀要第 40 号（2020）. 2.1 Cs ' Ba *Ȭ=ĵ£±ĖhWm ICRP ;ƅÔ¡Ǫ>% =ƭǁȥıɄ í°ǁȥıɁ1Bq ă<+ȹǵƭǁȥɄȹǵ í°ǁȥ [Sv/Bq]ɂ[7] , ICRP Publication 60 [10] *×$ %Ǹ>ɄƊ>% =£±Ėh Wm, Publ. 30[12]+ǎǕưhWm' Cs £±Ė hWm[9]Ɂ vɄƅhWmɂ& = Ò 1 * Cs *Ȭ=ƅhWm@ƠƻÁī¿ &ǎ*" 137Cs ,ôǕ*ƤǧɄôǕ*. % 100%ɁǳƯu, 99%ɂǥū*É¾> ȋ* ƤǧɄ ȋ*tŖ*¦ý=hWm')"%. =Òz+ı,ćȔ=Mp]sXgpXȫƤ ǧȗā& = £;+ĦŤ,Ʉǔǚ&Žȝ>ĺń*ö' %ĦŤ>=ȝƥ'ɄtĹ£ƺǅ*¦ý ć*Ʉörƴ@%ŷțƒ*ĦŤ>=ȝƥ@ ½ļ=7*ɄǎǕưrǗǏrǥū@Ȱ £ƺǅ@Ɖƀéƒ¶ůńƏ)= 2 #+ŶƍMp ]sXgpX Body Tissue A ( ȋ A)ɄBody Tissue B ( ȋ B) @Ɗ %hWm³>% = £;ĦŤ>= Cs +Å,Ʉ80%öɄŝ< 20%ƴ@='ì>% =137Cs +ÜÝ &Ɖę>= 137mBa 8+£±ĖhWm*Ĉ" % = ƅhWm*,Ʉ137Cs ǕǊċƈ+ƻȊ&ôǕ* ¤¦ť>=ȝƥǇė>% ) 7ɄôǕ * = 137Cs + PB *:=É¾ȝƥ@ƅhWm& ,ƖĨŘĬ=',&) . ĵ)£±ĖhWm[8]Īŏ> ņƧ&,Ʉĵ*Īŏ> Cs *Ȭ=£ ±ĖhWmɄ :.ɄǰōƦ'Ə)= 137mBa + £±ĖhWm[8]@ƊɄ137Cs @ƻÁī¿rǥ ūŧÙÅ+ 137Cs ' 137mBa +£Ģ±@Œ Ǵ=OeinsOjpboLkf@ę= %Ʉ137Cs +åōƦ+£Ģ±ǰōƦ'Ə) =ÙÅ+ PB ğx*:=ǫ-ǁȥů°ŋ*#. %OeinsOjp@ǧ Ʉǫ-ǁȥů° ŋ*(+: *ąȷ=@ƟǺ=4ɄPB +ǫ-ǁȥů°ŋ,ɄôǕ* % Cs ǥ ū0¤É¾>=Å*è='Ǉ

(3) ;>= 7Ʉǥū0+É¾Å+ąȷ8ƟǺ=ĵ *Īŏ>:<ƅíƒ) 137Cs ' 137mBa +£ Ģ±hWm@Ɗ ņƧ+ǲŉ*:<ɄPB +ǫ -ǁȥů°ŋ+gHZPf*Ȭ=Ƈǲ Ŭ4='ńĆ>= 2. ǳƯĶŦ ņƧ+ƕƒ,ɄĵĪŏ> Cs ' Ba *ò =£±ĖhWm[8]@Ɗ PB ğx+°ŋ@ ŒǴ='& =+7Ʉĵ£±ĖhW mśƺ5Ȓ7'@,7*ƟǺ= ƺ5Ȓ5+âăĒ,Ʉĵ£±ĖhWm@Īŏ Ǿĳ[8]*Ơ>% =¡Ǧę*ò= 134 Cs ' 137Cs +ǥūŧ*Ȭ=ÄŗƒÎë+ƭ ǁȥ'í°ǁȥ+Ƽŋ@şȏ='&ǧ Cs *Ȭ=£±ĖhWm+ƺ5Ȓ5*#. %, 134Cs +ǁȥı+ƼŋǾĳ+@¤ƅ ='&ɄBa *Ȭ=£±ĖhWm+ƺ5Ȓ5 *# %, 137Cs +ǁȥı :.ǁȥı*¸ 7=åōƦ 137mBa +ðxƄ+ƼŋǾĳ+@¤ ƅ='&ƟǺ=134Cs ,ÜÝ&Ɩ!*êì ōƦ')=7ɄCs *Ȭ=£±ĖhWm+ƺ 5Ȓ5+ƟǺ*Ł°& = 1Bq +134Cs = , 137Cs @ƚĽ*ǥūŧɄ ƻÁī¿ÙÅ+£Ȣǫ-ǁȥ,Ʉ v*Ȕ1 =ĵ£±ĖhWm+Mp]sXgpXhWm[8] @Ɗ ɄICRP ǸĜŦ [5,6] *×$ %ǲŉ= Cs :.Ba+£Ģ±*# %,Ŀĵ+£ ±ĖhWm@Ɗ=ɄhWm+ƺ5Ȓ5+â ăĒ,Ʉĳƃ8 *ĩȐ>% =ƅ£±ĖhW m[9]&Ǹ>% =ǁȥı'şȏ=7 *ɄįóǁǢȤıɄƺǅǢȤıɄ :.Ʉǁ ųÎërŗƒÎëȫ+şí°F[mJsƭ*#. %,ICRP Publication 60(ICRP1990Ā²Ê)[10]*Ĉ "WsT@Ɗ=ICRP+£Ȣǫ-Ǹh Wm+ǹƹ*# %,ĳƃ11'&»ſ%. =ĳƃ*ȃ<Ʉ&,ŔƎ@Ȕ1=) ǲ ŉ,ɄICRPì7=¡Ǧę+ŗŴ@òȅ*ǧ . 経口摂取. 血液注入. 胃内容物 24. 594. 血液. 小腸内容物 0.277. 0.0693. 全身Ｂ. 全身Ａ 0.277. 6.0. 2.49. 大腸上部内容物. 0.00126. 1.8. 0.00504. 膀胱. 大腸下部内容物. 1.0. 尿. 糞. Ò 1 Cs *Ȭ=ƅÔ+£±ĖhWm Ɂĳƃ 9 *×$ęɂ. 22.

(4) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. Cs *Ȭ=ĵ£±ĖhWm[8]Ɂ vɄĵh Wmɂ,Ʉę*ò=ǥũɄǥūŸũɁǥūɅ ƺǅȫƤǧǥũɂ Ʉ£ƺǅ* = Cs +ÿǩż āɄǥū£ƺǅ@Ȗȝ=Ȳ+ Cs +ȰºƄ )(*Ȭ=Ŀĵ+WsT@Ɗ %Īŏ> ǕǊċƈ@ǇėĵhWm+¹ÕhWm[4]@ ;*ĮǞɄ4Ʉ137Cs åōƦ& = 137mBa * # %,ǰōƦ'Ə)=£±ĖhWmȕ® >Ò 2ɄÒ 3 *>> Cs ' Ba *Ȭ= ĵhWm@ƠÒz+ı,ćȔ+Mp]sX gpXȫƤǧȗā& = ĵhWm*,ɄǎǕưƺǅ@Ȱ£ƺǅ' %ɄPlasma(ǥū)ɄRed blood cell(RBC:ȇǥƆ)Ʉ Brain(ǒ)ɄHeart wall (ĎǚÛ)ɄPancreas(Ǚǚ)Ʉ Spleen(Ǔǚ)ɄLiver(Ǌǚ)ɄSkin(Ɠǘ)ɄOther1( +ƺǅ 1)ɄOther2(+ƺǅ 2)ɄLung tissue(Ǎ ƺǅ)ɄAdipose tissue(Ǒǋƺǅ)ɄRed marrow(ȇǟ ȼȽ)ɄTrabecular bone surface(ŐȼǪȶ)ɄCortical bone surface(ƓȆȼǪȶ)ɄCartilage(Ȍȼ)ɄSkeltal muscle(ȼŎƮ)ɄKidneys(ǔǚ)ɄUrinary bladder contents(ǗǏ)+ 19 Mp]sXgpXìǆ> % = ǎǕưƺǅ,Ʉ>4&+ ICRP Publ.30 +ǎǕ ư h W m * ľ ? < ^ X Ū ³ ư h W m (HATM:. Human Alimentary Tract Model) [13] ħƊ>Ʉ Stomach contents( ǎ £ ï ƀ ) Ʉ Small intestine contents(ôǕ£ïƀ)ɄRight colon content(ÂƼǕ£ ï ƀ ) Ʉ Left colon content( û Ƽ Ǖ £ ï ƀ ) Ʉ Rectosigmoid colon content(ƖǕrS çƼǕ£ïƀ)Ʉ Stomach wall(ǎÛ)ɄSmall intestine wall(ôǕÛ)Ʉ Right colon wall(ÂƼǕÛ)ɄLeft colon wall(ûƼǕ Û)ɄRectosigmoid colon wall(ƖǕrS çƼǕÛ)+ 10 Mp]sXgpXìǆ>% = Ba *Ȭ=ĵ£±ĖhWm*,ɄÒ 3 *Ơ : *ɄǚÎ'ȼ)(+ƞƺǅ@Ȱ +Ȍ ƺ ǅ (Soft tissue) + z & ȁ ȗ ā ȗ Rapid turnover(Ȗƣ ST0Ɉ+Ȍƺǅ 0)ȕ®>%. =+Mp]sXgpX,ɄǰōƦ Ba +± ĖhWm[9]+z&ìǆ>% =Ȍƺǅ(Soft tissue)@ 3 #Mp]sXgpX*¦ Rapid turnover(ST0 Ɉ + Ȍ ƺ ǅ 0) Ʉ Intermediate turnover(ST1 Ɉ + Ȍ ƺ ǅ 1) Ʉ Slow turnover(ST2Ɉ+Ȍƺǅ 2)+t#& =Ba +ĵhWm,Ʉ* Ba @ǥūŧ'+ ǥūz+ Ba żā+ĽȫÝ³íűWsT@¤ƅ % =[8]. 血液(Plasma) 1.8. 4.42. 8.83 5.3 1.59. 赤血球(RBC). 1.47. 肺組織. 0.706. 赤色骨髄. 0.424. 脳. 0.212. 梁骨表面. 8.07. 14.1. 心臓壁. 1.68. 5.03. 1.77. 膵臓. 5.30. 脾臓. 0.113. 19.5. 肝臓. 31.9. 0.867. 皮膚. 0.00141. 3.53. 0.219. 9.87. 0.0159. 胃壁. 0.21. 67.1. 腎臓. 5.65 6.86. 6.86. 2.83 6.86. 膀胱 12.0. 小腸壁. 右結腸壁. 0.21. 1.05. 小腸内容物 0.30. 0.21. 2.0. 左結腸内容物 0.0667 2.0. 0.361. 直腸・S字 0.21 直腸・S字結腸壁結腸内容物. 0.361. 0.5. 血液(Plasma) 汗. 尿. 糞. Ò 2 Cs *Ȭ=ĵ£±ĖhWmɁĳƃ 8 *×$ęɂ. 33. 28.215. 右結腸内容物. 0.361. 左結腸壁. 4.52. 胃内容物 40.0. 0.21. 0.519. 5.65. 1.68. 4.42. その他組織２. 1.485. 0.2. 骨格筋. 0.762. 35.3. 0.265. 2.14. 0.0751. その他組織１. 4.16. 0.212. 軟骨. 9.71. 0.00353. 0.0883. 皮質骨表面. 30.0. 0.0848. 1.77. 脂肪組織. 1.06. 3.0. 0.257. 0.02.

(5) 東北工業大学紀要第 40 号（2020）. 血液(Plasma) 赤血球(RBC) 184. 200. 61.4. 200. 200. 200. その他軟組織 0. 肺組織. 19.4. 1000. 200. 梁骨表面. 脳. 200. 膵臓. 軟骨骨格筋皮膚. 200. 200. 200. 胃壁. 小腸壁. 脾臓. 胃内容物. 小腸内容物. 1.5. 6.0. 右結腸壁. 右結腸内容物. 40.3. 肝臓 2.0. 200. 1000. その他組織２. 20.57. 200. 200 200. 200. 心臓壁. 15.6. 皮質骨表面. その他組織１. 200. 左結腸壁. 腎臓. 左結腸内容物 0.0667 2.0. 4.48. 膀胱. 200. 直腸・S字. 直腸・S字. 結腸壁. 結腸内容物. 12.0. 0.5. 血液(Plasma) 尿. 糞. Ò 3 Ba *Ȭ=ĵ£±ĖhWmɁĳƃ 8 *×$ęɂ 200 d -1 (5 m) +Ɯ Ľȫ&¤.ǥū*Ě=hW m')"% <Ʉ£Ģ±, Cs ',Ə)= 137m Ba +£¦ý, 137Cs 'Ə)='|ĕ>Ʉ 4Ʉ137Cs +í°ǁȥı*¸7= 137mBa +ð xƷ 60%& ='ɄPB @ğx'+ ǫ-ǁȥ+ů°ŋ*(+: *ąȷ= @ƟǺ% ďǮ = ĳƃ 8 *,ɄĵhWm&Ǹ>Äǫ-ǁ ȥ*# % Publ.68 [5]&Ǹ>*ò=ş +ĔØĩȐ>% =Publ.68 &, Publ.30 [12] +ǎǕưhWmƊ>% =ǁȥǸ& Ɗ=şí°F[mJs*, SEECAL WsT[14] @ȠƊ=7ɄĵhWm*,ǎǕưhWm' %^XŪ³ưhWm[13] ƺ5Ȓ4>% =Ʉ ŗƒÎë+ǁȥǸ* %,Ʉĳƃ 8 *Ȕ1; >% =: *ɄÂƼǕ£ïƀ'ÂƼǕÛ@> >ßǕuȢ£ïƀ'ßǕuȢÛ*ɄûƼǕ£ï ƀ'ƖǕrS çƼǕ£ïƀ@ßǕvȢ£ïƀ*Ʉ ûƼǕÛ'ƖǕrS çƼǕÛ@ßǕvȢÛ*òĐ $ ĳƃ 8 &ØÊ>ĵhWm*,ɄôǕ;+ Cs +ǥū0+Ƥǧ*Ȭ=ǶȔ,È4>% ). +7ɄôǕ;ǥū0+ Cs +Ƥǧ*#. %,ĵhWm+×*)"% =ĳƃ 4 +hWm +@ħƊ=ɁÒ 2 + Cs ĵ±ĖhWm*ĳƃ 4 * =ôǕ£ïƀǥū 28.215 d -1 +@ƺ5. Īŏ> Cs +ĵhWm*,ɄǊǚ;ôǕ £ïƀ0+ƤǧƻȊ+*Ʉǥū;ƖĨǎ£ï ƀ0Ʉǥū;ǎÛ@Ȗ%ǎ£ïƀ0Ʉǥū ;ôǕ£ïƀ0Ʉǥū;ôǕÛ@Ȗ%ôǕ£ ïƀ0+ƤǧƻȊ8È4>% =;*Ʉǥū ;ÂƼǕ£ïƀ0Ʉǥū;ÂƼǕÛɄûƼǕ ÛɄƖǕrS çƼǕÛ0Ʉ>;+ǕÛ@Ȗ% >>ÂƼǕ£ïƀɄûƼǕ£ïƀɄƖǕrS çƼǕ£ïƀ0+ƤǧƻȊ8È4>% = +: *ɄôǕ;ǥū*É¾> 137Cs +ǎǕư0+ċƈƻȊÈ4>% =7Ʉǥū *É¾> 137Cs ǎǕư*¤¦ť>' * PB &Éƙ>ɄPB ''8*ßǕ*Ƥǧ%ƴ @%Þ*ĦŤ>=ȝƥ@ƖĨŘĬ= '&= ICRP +£Ȣǫ-ǸhWm[5,6]&,Ʉ =ƺ ǅrÎë;+ Cs :. Ba +Ƥǧ,Ʉ+ƺǅr Îë*èÔ=ŝƍįóǐ*ş='%h Wm³>Ʉ+şìı,tǝ* l 'ǪǶ> Ƥǧȗā'Ë->=Ò 1ɉÒ 3 z+ı,Mp ]sXgpXȫ+ Cs = , Ba +Ƥǧȗā& <Ʉ·, 1/ĸɁ vɄd -1ɂ& = 137m Ba +ƀƇƒ¶ůń, 2.55 m 'Ɯ ɄÒ 3 *Ơ: *ɄĪŏ> Ba +£±ĖhWm &,ȼŎƮ = ,Ȍƺǅ*èÔ= Ba ,> >ƤǧȗāɁƉƀéƒ¶ůńɂ1000 d -1(1 m)Ʉ 44.

(6) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. PB @ğx) ÙÅ*,ĵhWm+Ƥǧȗā @ŗŴ'%Ɗ=ĵhWm&,ɄôǕ ;+ƤǧƻȊ,ǥūɄǊǚɄßǕ0+ 3 #+ƻȊ & <ɄôǕ;+Ƥǧȗā, 30.0 d-1 & = + !Ʉǥū0+Ƥǧȗā 28.215 d-1 ɄǊǚ 0+Ƥǧȗā 1.485 d-1ɄßǕ0+Ƥǧȗā 0.3 d-1 & =ßǕ0+ƤǧÅ, 0.01 ')"%. =PB ğx>=ńȫz,Ʉ137Cs +ôǕ; ǥū0+É¾,Ȯî>=8+'Ʉ137Cs +ßǕ 0+ƤǧÅ@ 0.99Ʉŝ<+ 0.01 ǥūɄǊǚ* Ƥǧ='%hWm³=+ÙÅɄPB ğ xńȫz+ 137Cs +ǥū0+Ƥǧȗā, 0.285 d-1Ʉ Ǌǚ0+Ƥǧȗā, 0.015 d-1ɄßǕ0+Ƥǧȗā , 29.7 d-1 ')=PB +ğx@Ś7'*,Ʉ £±ĖhWm+Ƥǧȗā*Ɩ!*Ě='ì Ʉǲŉ@ǧ 4ɄǎǕư* % Cs PB *¿<Ȓ4>= Å,wƟì& ='Ǉ

(7) ;>=7ɄôǕ*ċ ƈ% Cs ôǕ&ǥū£*¤É¾>= Å@Ý³%5='*:"%ɄPB +°ŋ@ ŒǴ=. Ȓ4) 'Ï+ǲŉ&,ĳƃ 8 +@¤ƅ& )") ɄÒ 3 + Ba ĵ±ĖhWm*ôǕ £ïƀǥū 1.5 d -1 +,^XŪ³ưhWm[13] +ŗŴ' Ba +ƻÁī¿*ò=ǎǕưÉ¾ Å( f1 ) +ŗŴ;š7& =ɂ 2.2 ŝƍįóǐ+Ǹ[11] 137 Cs ī¿ć+£+ƺǅrÎëÀ=ǫ- ǁȥ@Ǹ=*,ɄÄƺǅrÎë* =ī¿ ć+ 137Cs ŝƍįóǐ@š7=ďǮ =137Cs ŝƍįóǐ,ɄĵhWm&ìǆ>ƺǅrÎë Ɂ vɄǁųÎëɂ@Mp]sXgpX'ɄM p]sXgpXȫ+ 137Cs +Ƥǧ :.ǛžÜÝ *:=Ūŵ@Ǉė (1)Ă+Č¦ĶƥĂ&Ǹ =137mBa 0+ÜÝ* Ʉ137Cs @ƻÁī¿ ÙÅ*,Ʉ137Cs ' 137mBa +ŝƍįóǐǸ òȅ')= dqS,j ( t , t0 ) = I!S,j ( t ) + å lS¢®S × qS¢,j ( t , t0 ) dt S¢ + å l j¢ × qS,j¢ ( t , t0 ) . (1). j¢. . - å lS®S¢¢ × qS,j ( t , t0 ) - l j × qS,j ( t , t0 ) S¢¢. &Ʉ qS,j ( t , t0 ) ,ɄĀȿ t0 * %įóĒō Ʀ j @ī¿'Ʉī¿ć+Āȿ t * =ǁų Îë S &+ōƦ j +ŝƍįóǐ[Bq]& = (1)Ă+ÂȑƬ 1 ȸ,Āȿ t * =·Ľȫă <+ǁųȸɁƽȸɂ ɄƬ 2 ȸ,ōƦ j ǁųÎ ë S¢ ;ǁųÎë S *Ƥǧ%=ũȸ&Ʉ lS¢®S ,+Ƥǧȗā& =Ƭ 3 ȸ,įóĒōƦ j¢ ÜÝįóĒōƦ j Ɖę>=ƽȸ&Ʉ l j¢ ,ōƦ j¢ +ÜÝìı& =Ƭ 4 ȸ,ǁųÎë S ;ǁųÎë S¢¢ 0ōƦ j Ƥǧ=ũ¥ȸɄƬ 5 ȸ,ōƦ j +ǛžÜÝ*:=Ūŵȸ& <Ʉl j , ōƦ j +ÜÝìı& =Ò 1ɉÒ 3 *Ơ: *Ʉ ōƦ+£Ģ±@ŘĬ=7+Mp]sXg pX,Ǭı&ŕę>Ʉ4Ʉī¿ōƦ+Ü Ý&Ɖę>=åōƦ@È6Ǭı+įóĒōƦ ;į¥>=įóǁ@Ǉė=+7Ʉŝ ƍįóǐ@Ǹ=ĶƥĂ,șƫČ¦ĶƥĂ' )=Č¦ĶƥĂ,ÄǁųȺÖ*¿<Ȓ4>=į óĒōƦ+įóǐ@¨ń'%ǲ>=Ʉņ ǲŉ&,ƚȫƒ) 137Cs +ƻÁī¿ = ,ǥū ŧ@ì=7Ʉ>>Ʉǎ = ,ǥū * = 137Cs +ŝƍįóǐ+¨ń@ 1Bq 'Ʉ ++Mp]sXgpX+ŝƍįóǐ¨ń ,1%Ro'= șƫČ¦ĶƥĂ+Sm\s*,Ʉƞ Ƶ+ı ǲ*Ł°) Gear Ŧ[15]@Ɗ . 55. 2.3 ƭǁȥrí°ǁȥ+Ǹ[11] Cs ī¿ć*£Ȣǫ-=ƺǅrÎëɁ vɄ ŗƒÎëɂ+ƭǁȥɄ :.í°ǁȥ,ɄICRP +£Ȣǫ-ǸhWm*Ĉ ɄÄǁųÎë+ŝ ƍįóǐ@Ɗ %vǶ+(2)Ʉ(3)Ă&Ǹ= įóĒōƦ j @Āȿ t0 &ī¿ć+Āȿ t * =ŗƒÎë T +ƭǁȥ@ H T ( t , t0 ) Ʉ :.Ʉ í°ǁȥ@ E ( t , t0 ) 'ɄǁųÎë S &+ŝƍįó ǐ qS,j ( t , t0 ) @ķƛ''Ʉƭǁȥ H T ( t , t0 ) +ĽȫÝ³,(2)Ă+Č¦ĶƥĂ&Ǫ>=' = 137. dH T ( t , t0 ) dt. = åå qS,j¢ ( t , t0 ) × SEE ( T ¬ S; t ) j¢ (2) j¢. S. &Ʉ SEE ( T ¬ S; t ) j¢ ,şí°F[mJs& <ɄĀȿ t * %ǁųÎë S *èÔ=įó ĒōƦ j¢ 1 ÜÝ'*į¥>=įóǁ+ F[mJsŗƒÎë T *É¾>=ȥ& = ƭǁȥ H T ( t , t0 ) ,Ʉ+Č¦ĶƥĂ@ƨ¦% (3)Ă;ĉ;>= t ï ì dH ( t ¢, t0 ) ïü H T ( t , t0 ) = ò í T ý dt ¢ t0 dt ¢ ïî ïþ. (3). ƭǁȥš7;>>-Ʉí°ǁȥ,(4)Ă*: < E ( t , t0 ) = å wT H T ( t , t0 ) T. (4).

(8) 東北工業大学紀要第 40 号（2020）. &x

(9) ;>=&Ʉ wT ,ŗƒÎëT+ƺǅǢ Ȥı& = ī¿ć+ƨ¦Ľȫ,Ʉę+ÙÅ*,Ǹ+× Ŵ'%ħ;>=50Āȫ'Ʉ+ńȫ*òĐ =ƭǁȥɄí°ǁȥ@>>ɄȹǵƭǁȥɄ ȹǵí°ǁȥ'Ë/ v+3Ʊ ȯ*Ơǫǁȥ+ǳƯƼŋ,Ʉ >81Bq +įóĒōƦ @£ī¿*'+ȹǵǁȥ& =. Ǫ 1 ĵhWm*:=. 3. ǸƼŋ'Ǉñ ĵhWm@ƺ5ȒA £Ȣǫ-ǁȥǸb oLkfśþ*±% =@Ʉ137Cs & )ɄƟā@u=7 134Cs @È7%ęŗŴ *ò=ǥūŧ+£Ȣǫ-ǁȥƼŋ@ĳ ƃ 8 +Ƽŋ'şȏƟǺ= ř*ɄĵhWmƺ5Ȓ5+âăĒƟǺŮ5+ǁ ȥǸboLkf&ǲŉ PB ğx*:=ę ŗŴ@òȅ' 137Cs ƻÁī¿*Ȭ=£Ȣ ǫ-ǁȥ+ů°ŋ@ƠɄPB @ğx). ÙÅ'ğxÙÅ+ 137Cs 'åōƦ 137mBa + £Ģ±+Ŗæ@ŝƍįóǐ :.£;+Ħ Ť+ĽȫÝ³;ƟǺɄǁȥůȈ=gH ZPf*# %ȂǾ= 4ɄPB ğx*:=ôǕ* = Cs +ǥū0 +¤É¾@aoUK=Å@]kgsT' £Ȣǫ-ǁȥ+ů°ŋ+ŒǴƼŋ@Ơ. 134. Cs ǥūŧ 1Bq *ò. =ǫ-ǁȥ [Sv]'ƅhWm+ǳƯ*ò =şɄĳƃ 8 ĩȐ ĵhWm. ş òƅhWmş. ǫ-ǁȥ. ĳƃ 8. ȼǪȶ. 1.55E-08. 0.8. 0.8. ǎÛ. 1.62E-08. 0.9. 0.9. ôǕÛ. 1.67E-08. 0.8. 0.8. ƼǕ. 1.85E-08. 0.9. 0.8. ǔǚ. 1.76E-08. 0.9. 0.9. Ǌǚ. 1.60E-08. 0.8. 0.8. Ʈǉ. 1.95E-08. 1.1. 1.1. Ǚǚ. 2.22E-08. 1.0. 1.0. ȇǟȼȽ. 1.66E-08. 0.9. 0.9. Ǔǚ. 1.68E-08. 0.8. 0.9. Ƴù. 1.18E-08. 0.7. 0.7. ƌƂǖ. 1.30E-08. 0.7. 0.7. í°ǁȥ. 1.54E-08. 0.8. 0.8. Ǫ 2 ĵhWm*:=. 137. Cs ǥūŧ 1Bq *ò. =ǫ-ǁȥ [Sv]'ƅhWm+ǳƯ*ò. 3.1 ĵhWm*:=£Ȣǫ-ǁȥǸ Ǫ 1 :.Ǫ 2 ,>>ĵhWm@ƺ5ȒA boLkf&Ǹ 134Cs :. 137Cs *Ȭ =ɄęŗŴrǥūŧ 1Bq *ò=Äŗƒ Îë+ƭǁȥ[Sv]Ʉí°ǁȥ [Sv]ɄPubl.68 hW m&Ǹ*ò=şɄ :.ɄĵhWm@ ƑǪĳƃ 8 +ĩȐ@Ơ Ǫ 2 *,ɄņƧ&Ǹ 137Cs *Ȭ=ǥū ŧ+ÙÅ+ÄŗƒÎë+ƭǁȥrí°ǁȥ* ¸7=åōƦ 137mBa +ðxƄɄ :.ɄBa +ĵ hWmĩȐǾĳ+ĳƃ 8 +@Ơ Publ.68 hWm*Ĉ"ņƧ+ǳƯ,ɄICRP Publication 60 1990 Ā²Ê[10]*Ĉ"£Ȣǫ ǁ ȥ Ǹ M s Y IDEC Ɂ Internal Dose Easy Calculation codeɂ[16]@Ɗ %ǧ" Ǫ 1 :.Ǫ 2 *Ơ: *ÄŗƒÎë+ƭ ǁȥrí°ǁȥ :. 137mBa +ðxƄ*Ȭ=Ƽ ŋ,Ʉĳƃ 8 *ĩȐ>% =@:¤ƅ% <ɄĵhWm+ƺ5Ȓ5,âă*ǧ?>% = '©Ĵ&= í°ǁȥ*Ȭ%,ɄƅhWm'ÏĪŏ> ĵhWm&ǳƯ>*ß)ü,) ƅ hWm&,Ʉ ȋ*¦ýįóǐȥ£+ƺ. =ş :. 137m Ba +ðxƄɄĳƃ 8 ĩȐ. 66. ĵhWm. òƅ. ş. ǫ-ǁȥ. hW. ĳƃ. mş. 8. Ba ð xƄ. Ba ð xƄ ĳƃ 8. ȼǪȶ. 2.62E-08. 1.9. 1.9. 0.34. 0.32. ǎÛ. 1.05E-08. 0.8. 0.9. 0.66. 0.67. ôǕÛ. 1.32E-08. 0.9. 0.9. 0.72. 0.73. ƼǕ. 2.12E-08. 1.4. 1.4. 0.79. 0.79. ǔǚ. 1.18E-08. 0.8. 0.9. 0.64. 0.65. Ǌǚ. 1.09E-08. 0.8. 0.9. 0.66. 0.68. Ʈǉ. 1.57E-08. 1.2. 1.3. 0.40. 0.42. Ǚǚ. 1.55E-08. 1.0. 1.1. 0.57. 0.59. ȇǟȼȽ. 1.41E-08. 1.1. 1.1. 0.65. 0.64. Ǔǚ. 1.07E-08. 0.8. 0.9. 0.65. 0.67. Ƴù. 6.86E-09. 0.5. 0.5. 0.88. 0.84. ƌƂǖ. 7.26E-09. 0.6. 0.5. 0.88. 0.85. í°ǁȥ. 1.54E-08. 0.8. 0.9. 0.75. 0.74.

(10) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. PB ğx+°ŋ+ƕê'%ǡÓƘ+ġȧ [17]*); ůƄ 40%ɉ50%@ħƊ='Ʉ +ƲÑ+ůƄ@Ȟę=*,ɄPB +ğxȪã Ľń,Ȝ'8ī¿ć 1 qŀ £&)>-); Ʉ4Ʉğxńȫ,Ɯ'8 3 qŀ uďǮ& ='@Ơ% =ğxńȫ 6 qŀ@ȉ

(11) %8ů°ŋ, 7Ʉğx@ 6 qŀ uƾƿ ='+Ł°Ē, '©Ĵ&=PB ğx +°ŋ@u=*,Ʉī¿ć&= ĺğx @ȪãɄ3 qŀ; 6 qŀƥāğx@ƿ=ď Ǯ ='¦=. ǅ+Ȇȥ*Đ%¦ȣ>Ʉí°ǁȥǸ> =>*ò%ɄĵhWm&,ǹƹ*ìǆ> ǁųÎë*# %ŝƍįóǐǸ>ɄÄǁ ųÎëŝƍįóǐȥ*×$ƭǁȥrí°ǁȥ ǳƯ>=+7ɄĵhWm&ª*ìǆ >ǁųÎë+ƭǁȥƅhWm*ş1% Ⱦ7*Ǹ>% =ɄƺǅǢȤı@Ǉė %í°ǁȥ@š7=Şȱ&ıƒ*ƅhWm' +üô)=Ç* ƼŋɄí°ǁȥ, yǈ&23Æƭ+*)"% = 3.2 bmOBpams+ğx*:=í°ǁȥ +ů°ŋ 137 Cs +ƻÁī¿ć* PB @ğxÙÅ+£Ȣ ǫ-í°ǁȥ+ů°ŋ*# %ɄğxȪãĽ ń :.ğxńȫ@Ý

(12) %ǲŉɄğxȪãĽń :.ğxńȫ+ąȷ@ŒǴ ǡÓƘ+ġȧ[17]'şȏ&=: *ɄȪ ãĽń*Ȭ%,ī¿ćƖćɄ1 ĸƕɄ7 ĸɁ1 Țɂ ƕɄ14 ĸƕɄ28 ĸɁ1 ŀɂƕɄ84 ĸɁ3 ŀɂƕɄ 168 ĸɁ6 ŀɂƕ+ 7 Ȗ<Ʉğxńȫ*# %,Ʉ >;+ȪãĽń;șƿ& 28 ĸȫɄ84 ĸȫɄ 168 ĸȫɄ252 ĸȫɄ365 ĸɁ1 ĀɂȫɄ1095 ĸȫ + 6 Ȗ<+ğxńȫ*# %ŒǴǳƯ,. >8 137Cs @ɇBq ƻÁī¿ÙÅ*# % ǧ" Ǫ 3 *ȹǵí°ǁȥ+ůƄ@ƠǪz+ı ç, 1 ǧƕī¿ć+ğxȪãĽń[ĸ]Ʉ1 §ƕ ğxńȫ[ĸ]Ʉ%ɄÄğxȪãĽń'ğxń ȫ*òĐ= PB *:=ǫ-ǁȥ+ůƄ& =ǟ$Qm,ůƄ 35% u')"%. =Qm& = ůƄɁReffɂ,ɄPB @ğx) ÙÅ+ȹǵ í°ǁȥ@ Deff_noPBɄPB @ğxÙÅ+ȹǵí °ǁȥ Deff_PB '%(5)Ă&ìǆ=. Deff_noPB. ´100. [%]. (5). Ǫ 3 ȹǵí°ǁȥůƄ[%] 0 1 7 14 28 84 28 81.4 23.2 19.1 17.8 16.0 10.6 84 81.6 40.6 36.7 34.6 31.2 20.7 168 81.7 48.3 44.5 42.1 37.9 25.1 252 81.7 50.0 46.2 43.7 39.4 26.1 365 81.7 50.4 46.6 44.1 39.7 26.3 1095 81.7 50.4 46.7 44.2 39.8 26.4 rɇǧƕ,ī¿ćğxȪãĽń[ĸ]@Ơ rɇ§ƕ,ğxńȫ[ĸ]@Ơ. 168 5.70 11.1 13.6 14.1 14.2 14.2. 3 10-8 非投与 PB投与. 2.5 10-8. 2 10-8. 1.5 10-8. 1 10-8. 5 10-9. 0 副腎膀胱壁骨表面脳乳房食道胃壁小腸壁大腸上部壁大腸下部壁結腸腎臓肝臓筋肉卵巣膵臓赤色骨髄肺＿胸郭外肺＿胸郭内皮膚脾臓精巣胸腺甲状腺子宮残り実効線量. Deff_noPB - Deff_PB. 1Bq 経口摂取時の預託等価線量・預託実効線量 (Sv). Reff =. 3.3 bmOBpams+ğx*:=ƭǁȥ+ ů°ŋ Ò 4-1 ,ɄPB @ğx) ÙÅ'ƻÁī¿ć 7 ĸƕ* PB +ğx@Ȫã 168 ĸȫğx@ƿ ÙÅ+ɄÄƺǅrÎë+ȹǵƭǁȥ'ȹǵí° ǁȥ@şȏ8+& =Ò 4-2 *,Ʉ>; 2 #+ÙÅ+ǁȥ+ş@Ơ PB @ğx) ÙÅ*,ȼǪȶɄßǕÛɄƼ ǕɄƮǉɄǙǚɄȇǟȼȽɄğxÙÅ*,ß ǕÛɄƼǕɄȼǪȶ+ȹǵƭǁȥß ğ xÙÅ*,ßǕvȢÛɄƼǕ@ȰƺǅrÎ ë+ȹǵƭǁȥ,Ʒ¶¦*ůõ=ɄßǕv ȢÛ+ȹǵƭǁȥƷ 40%Úß% =ƺǅ ǢȤı&Ȥ5>%Ǹ>=ȹǵí° ǁȥ+ůƄ,Ʒ 50%*)"% =. 標的器官、実効線量. Ò 4-1 ī¿ć 7 ĸƕ*bmOBpams+ ğx@Ȫã 6 qŀȫğx@ƾƿ ÙÅ'ğx) ÙÅ+ȹǵƭǁȥɄ ȹǵí°ǁȥ+şȏ. 77.

(13) 東北工業大学紀要第 40 号（2020）. Ò 5-2 *Ʉǥū :.Ǌǚ* =ƻÁī¿ć +ŝƍįóǐĽȫÝ³@ƠPB +ğx*:< ŝƍįóǐ,ůõ% =ôǕ;ǥū0+ 137 Cs +¤É¾ȮŚ>%ǥū :.ǥū; Ǌǚ0+ 137Cs +ƽȮŚ>=7& =' Ǉ

(14) ;>=137mBa +ǥū£+ŝƍįóǐ, 137Cs *ş1% 10ɉ100 uß Ba +ĵ£±Ė hWm&,ɄƮǉ'ÆŖ*Ʉ1%+Ȍƺǅ; Ba , 200 d-1 (Ɖƀéƒ¶ůń 5 m) &ǥū*Ƥǧ =hWm')"% =;& ='Ǉ

(15) ;> =+7Ʉ137mBa +Ǌǚ+ŝƍįóǐ, 137Cs *ş1%ô . 1.2. 1. 0.8. 0.6. 0.4. 0.2. 0. 副腎膀胱壁骨表面脳乳房食道胃壁小腸壁大腸上部壁大腸下部壁結腸腎臓肝臓筋肉卵巣膵臓赤色骨髄肺＿胸郭外肺＿胸郭内皮膚脾臓精巣胸腺甲状腺子宮残り実効線量. PB投与の預託線量／非投与の預託線量. 1.4. 非投与 Cs137 全身 PB投与 Cs137 全身非投与 Cs137 筋肉 PB投与 Cs137 筋肉非投与 Ba137m 全身 PB投与 Ba137m 全身非投与 Ba137m 筋肉 PB投与 Ba137m 筋肉. 1. Ò 4-2 ī¿ć 7 ĸƕ*bmOBpams+ ğx@Ȫã 6 qŀȫğx@ƾƿ ÙÅ'ğx) ÙÅ+ȹǵƭǁȥɄ ȹǵí°ǁȥ+şƄ 3.4. bmOBpams+ğx*:=ŝƍįó ǐ0+ąȷ PB +ğx*:<ƭǁȥrí°ǁȥů >=ȝƥ@ɄĵhWm&|ű>={)ǁųÎë * = 137Cs ' 137mBa +ŝƍįóǐ+ĽȫÝ³ ;ŒǴ=''8*ɄyōƦ+ŝƍįóǐ+Ľ ȫÝ³@şȏ='*:<ɄǰōƦ'åōƦ+ £±ĖhWm+ȟ +ąȷ@Ǽ1= v*ƠÒz+ŝƍįóǐĽȫÝ³,Ʉ >8ęŗŴ 137Cs @ 1 Bq ƻÁī¿' *ɄPB @ğx) ÙÅ'ɄƻÁī¿ć 7 ĸƕ * PB +ğx@Ȫã 168 ĸȫğx@ƿÙÅ +ɄÄǁųÎë* = 137Cs ' 137mBa +> >+ŝƍįóǐ+ĽȫÝ³& =%ɄPB @ğx% =ńȫz,ɄǊǚrǥū;ôǕ* ċƈ% 137Cs + 99%,ßǕuȢ*ƤǧɄ ŝ< 1%ǥū*¤É¾>='ì% = Ò 5-1 *Ʉ ȋ :.Ʈǉ* =ƻÁī¿ć +ŝƍįóǐĽȫÝ³@Ơ PB +ğx*:<Ʉ ǁųÎëz+ŝƍįóǐ,ğx) ÙÅ*ş 1%ůõɄǫ-ǁȥ,ů='@Ơ%. =PB @ğx) ',Ʉī¿ć 50 ĸ u ƻȝ=' 137Cs ' 137mBa + ȋ* =ŝƍį óǐ,23ÆĽȫÝ³@ƠɄ ȋz&,įó ÿǩ*)"% =Ʈǉz+ŝƍįóǐ,ī¿ć Ʒ 10 ĸ&Ʉ137Cs , 0.65BqɄ137mBa , 0.19Bq &Ŀ ß')<ɄǰōƦ'åōƦ+£±ĖhWm+ȟ. ƅ>% =Ba +ĵ£±ĖhWm&,ɄƮ ǉz+ Ba , 1000 d-1 (Ɖƀéƒ¶ůń 1 m) &ǥū *Ƥǧ=hWm*)"% =;& ='Ǉ

(16) ;>=. 1Bq 経口摂取時の残留放射能 (Bq). 標的器官、実効線量. 0.8. 0.6. 0.4. 0.2. 0 0.01. 0.1. 1. 10. 100. 1000. 摂取後経過時間 (日). Ò 5-1 ī¿ć 7 ĸƕ*bmOBpams+ ğx@ȪãÙÅ'ğx) ÙÅ + ȋɄƮǉ* = 137Cs ' 137mBa + ŝƍįóǐĽȫÝ³. 1Bq 経口摂取時の残留放射能 (Bq). 1. 0.1. 0.01. 0.001. 0.0001. 10-5 0.01. 非投与 PB投与非投与 PB投与非投与 PB投与非投与 PB投与. 0.1. Cs137 血液 Cs137 血液 Cs137 肝臓 Cs137 肝臓 Ba137m 血液 Ba137m 血液 Ba137m 肝臓 Ba137m 肝臓. 1. 10. 100. 1000. 摂取後経過時間 (日). Ò 5-2 ī¿ć 7 ĸƕ*bmOBpams+ ğx@ȪãÙÅ'ğx) ÙÅ +ǥūɄǊǚ* = 137Cs ' 137mBa + ŝƍįóǐĽȫÝ³ Ò 5-3 *ɄôǕ :.ßǕuȢ* =ƻÁī ¿ć+ŝƍįóǐĽȫÝ³@Ơ137Cs ' 137mBa 88.

(17) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. Ò 5-4 *Ʉǔǚ :.ǗǏ* =ƻÁī¿ć +ŝƍįóǐĽȫÝ³@Ơ137Cs ' 137mBa + ǔǚ* =ŝƍįóǐ+ĽȫÝ³+Ç,Æ & =Ʉ137Cs +ŝƍįóǐ, 137mBa +Ʒ 1.6 ß Ba +ĵ£±ĖhWm&,ɄBa ǔ ǚ; 200 d-1 (Ɖƀéƒ¶ůń 5 m) &ǥū*Ƥ ǧ=hWm')"% ='*:<Ʉ+ȟ. ƅ>% ='Ǉ

(18) ;>=ǗǏ* =ŝƍį óǐ,ī¿ćƷ 0.15 ĸ*_sK*)=4&, 137 Cs ' 137mBa &23ÆÇ@Ơ% =Ʉ ƻȝĽȫ''8*ȟ ƅ>=ÆÇ@Ơ ĺń+Ɓč,ɄƻÁī¿ć*ǥū*É¾> 137 Cs ǔǚ@ƻ%ǗǏ*Ƥǧ 137Cs +ÜÝ&Ɖ ę>= 137mBa *:='Ǉ

(19) ;>=_sK@ȝ ć+ǔǚ* =yǈ+ȟ ,Ʉ137Cs ,ǥū ;ǔǚ@ƻ%ǗǏ*Ƥǧ=ɄBa +ĵ£± ĖhWm&,ɄÄȌƺǅ;ǥū*Ƥǧ 137m Ba ƖĨǗǏ*Ƥǧ=hWm')"% = ;'Ǉ

(20) ;>=PB +ğx*:< 137Cs 8 137m Ba 8ŝƍįóǐ,ůõ% =. +ôǕ* =ŝƍįóǐ+ĽȫÝ³,23Ȥ )"% <ɄPB +ğx*:<ŝƍįóǐůõ % =PB @ğx) '+ 137mBa +ßǕ uȢ* =ŝƍįóǐ,Ʉī¿ć 1 ĸƻȝ= ' 137Cs :< 10ɉ100 uß +ü,Ʉ Ba +ĵ£±ĖhWm*Ʉǥū; Ba ßǕu Ȣ*Ƥǧ=ƻȊÈ4>% =;'Ǉ

(21) ; >=PB +ğx@Ȫã=' 137Cs +ßǕuȢ* =ŝƍįóǐ,ôǕ* =ǥū0+ 137Cs +¤É¾ȮŚ>=7ɄđŻ* 10 uÚ ß% =Ʉ137mBa +ßǕuȢ* =ŝƍį óǐ, PB +ğx''8*ůõ=+Ç,Ʉ Ò 5-2 *Ơ: *Ʉğx*:<ǥū0+ 137Cs +ƽđůɄ137Cs +ÜÝ&Ɖę>=ǥū£ + 137mBa 8ůõ=;'Ǉ

(22) ;>= 非投与 PB投与非投与 PB投与非投与 PB投与非投与 PB投与. 1Bq 経口摂取時の残留放射能 (Bq). 1. 0.1. Cs137 小腸 Cs137 小腸 Cs137 大腸上部 Cs137 大腸上部 Ba137m 小腸 Ba137m 小腸 Ba137m 大腸上部 Ba137m 大腸上部. 0.01. 0.1. 1Bq 経口摂取時の残留放射能 (Bq). 0.001. 0.0001. 10-5 0.01. 0.1. 1. 10. 100. 1000. 摂取後経過時間 (日). Ò 5-3 ī¿ć 7 ĸƕ*bmOBpams+ ğx@ȪãÙÅ'ğx) ÙÅ +ôǕɄ ßǕuȢ* = 137Cs ' 137mBa +ŝƍįóǐĽȫÝ³. 0.01. 0.001 非投与 PB投与非投与 PB投与非投与 PB投与非投与 PB投与. 0.0001. 10-5 0.01. 0.1. 1. Cs137 骨表面 Cs137 骨表面 Cs137 赤色骨髄 Cs137 赤色骨髄 Ba137m 骨表面 Ba137m 骨表面 Ba137m 赤色骨髄 Ba137m 赤色骨髄. 10. 100. 1000. 摂取後経過時間 (日). Ò 5-5 ī¿ć 7 ĸƕ*bmOBpams+ ğx@ȪãÙÅ'ğx) ÙÅ +ȼǪȶɄȇǟȼȽ* = 137Cs ' 137m Ba +ŝƍįóǐĽȫÝ³. 1Bq 経口摂取時の残留放射能 (Bq). 1 非投与 PB投与非投与 PB投与非投与 PB投与非投与 PB投与. 0.1. Cs137 腎臓 Cs137 腎臓 Cs137 膀胱 Cs137 膀胱 Ba137m 腎臓 Ba137m 腎臓 Ba137m 膀胱 Ba137m 膀胱. 0.01. Ò 5-5 *ɄȼǪȶ :.ȇǟȼȽ* =ƻÁ ī¿ć+ŝƍįóǐĽȫÝ³@Ơ 137Cs ' 137m Ba +ȼǪȶ* =ŝƍįóǐ+ĽȫÝ³,Ʉ Ò 5-4 +ǔǚ'ÆŖ*Ç,23Æ& =Ʉ ǔǚ'Ə)< 137mBa +ŝƍįóǐ 137Cs *ş1 %ß +ȟ ,Ʉĵ£±ĖhWm&,Ʉ Cs *Ȭ%,ǥū;ȼǪȶ*ƤǧrŶƍ Cs ¤.ǥū*Ƥǧ=hWm')"% =Ʉ Ba ,ȼǪȶ*+44ƍ4=hWmɁÒ 3ɂ') "% =;'Ǉ

(23) ;>=yƺǅryōƦ'8Ʉ PB +ğx*:<ŝƍįóǐ,ůõ% =. 0.001. 0.0001. 10-5 0.01. 0.1. 1. 10. 100. 1000. 摂取後経過時間 (日). Ò 5-4 ī¿ć 7 ĸƕ*bmOBpams+ ğx@ȪãÙÅ'ğx) ÙÅ +ǔǚɄǗǏ* = 137Cs ' 137mBa + ŝƍįóǐĽȫÝ³ 99.

(24) 東北工業大学紀要第 40 号（2020）. PB +ğx*:< 137Cs ôǕ&ǥū*¤É¾ >) ÙÅɄßǕ@Ȱ£ƺǅ+ 137Cs ŝƍį óǐ,ğx) '*ş1%ůõɄ+ƼŋɄ >;+ƺǅ@ǁų'=£Ȣǫ-,ů ='*)=tĶɄßǕ+ŝƍįóǐ,ğx* :<Ú®=7ɄßǕ :.ȳĨ=ƺǅ+ǫ -ǁȥ,ğx) '*ş1%Ú®= '*)=+|ĕ,Ò 4-1 :.Ò 4-2 *Ơ Ƽŋ@ǻĻ=. 1Bq 経口摂取時の尿・糞による積算排泄量 (Bq). *ĦŤ>=įóǐȥ,ɄPB @ğx) ' +ö*:=ĦŤƷ 7BqɄ ƴ*:=ĦŤƷ 0.1BqɄ PB @ğx'+ö*:=ĦŤƷ 3BqɄƴ* :=ĦŤƷ 0.6Bq & ='ɄǲŉƼŋ; Ơ>= örƴ@% 137mBa Þ0ĦŤ>=ȥ,Ʉ 137 Cs +ÜÝ&£*Ɖę>= 137mBa +įóǐ ȥ+Ʒ 0.02%& <Ʉ£&Ɖę>= 137mBa + 2'A(,£&Ūŵ% ="%ɄPB ğx*:=ǫ-ǁȥ+ů°ŋ*¼3 Ba + 3.5 bmOBpams+ğx*:=įóǐĦŤ ĵ£±ĖhWm*:=ĦŤȝƥ+ąȷ,2' A() 'Ǉ

(25) ;>Ʉǫ-ǁȥ+ů°ŋ, ȥ0+ąȷ 137 Cs +Þ0+ĦŤ&Ţ4='ǲŉƼŋ;© PB +ğx*:<£Ȣǫ-ǁȥůõ= Ĵ>= ',Ʉğx*:<įóǁ@į¥=ǁųōƦğ x) '*ş1%£*èÔ))" Ƽŋ& =&,ɄPB +ğxɄ£; 1 +ǁųōƦ+ĦŤȥ*(+: *ąȷ@x

(26) = 非投与 Cs137 尿排泄量 PB投与 Cs137 尿排泄量非投与 Cs137 糞排泄量 Ǽ1= 0.8 PB投与 Cs137 糞排泄量非投与 Cs137 尿糞合計量 Ò 6-1 :.Ò 6-2 ,Ʉ>>ęŗŴ PB投与 Cs137 尿糞合計量 137 Cs @ 1 Bq ƻÁī¿'*ɄPB @ğx 0.6 ) ÙÅ'ɄƻÁī¿ć 7 ĸƕ* PB +ğx@Ȫ ã 168 ĸȫğx@ƿÙÅ+Ʉ137Cs ' 137mBa 0.4 *Ȭ=örƴ@%Þ*ĦŤ>=ƻÁī ¿ć+ƨƯȥ+ĽȫÝ³& =&8ɄPB 0.2 @ğx% =ńȫz,ɄǊǚrǥū;ôǕ* 137 ċƈ% Cs + 99%,ßǕuȢ*ƤǧɄ ŝ< 1%ǥū*¤É¾>='ì% = 0 0.01 0.1 1 10 100 1000 10 Ò 6-1 *Ơ: *ɄƻÁī¿> 1Bq + 摂取後経過時間 (日) 137 Cs +ßȢ¦,Ʉö'ƴ*:<Þ*ĦŤ>= Ò 6-1 ī¿ć 7 ĸƕ*bmOBpams+ PB @ğx) ',Ʒ 80%ö@%ĦŤ ğx@ȪãÙÅ'ğx) ÙÅ >Ʉŝ<+ 20%ƴ@%ĦŤ>=PB +ƴrö*:= 137Cs +ƨƯĦŤȥĽȫ @ğxÙÅ,Ʉö*:=ĦŤƷ 60%*ůõ Ý³ Ʉƴ*:=ĦŤƷ 40%*Úß% =£ ; 50ɀĦŤ>=ī¿ć+ƻȝĽȫ,ȵğx 10 +ÙÅ,Ʒ 90 ĸ& =ɄğxÙÅ,Ʒ 40 ĸ')<£;¶ů=ńȫƷ 50 ĸƜǄ 非投与 Ba137m 尿排泄量 PB投与 Ba137m 尿排泄量 137 非投与 Ba137m 糞排泄量 >% =PB +ğx*:<Ʉ Cs +£;+ 8 PB投与 Ba137m 糞排泄量非投与 Ba137m 尿糞合計量 ĦŤț>='@Ơ% =+ƼŋɄ PB投与 Ba137m 尿糞合計量 ǫ-ǁȥƷ¶¦*ů>='|ĕ&= 6 Ò 6-2 *Ʉ ö'ƴ*:<Þ*ĦŤ>= 137mBa +ĽȫÝ³@Ơ Ʉǃȍ+ghl,ɄÒ 4 6-1 'Ə)< 0~10 Bq +ƲÑ& =137mBa + Þ0+ĦŤ,ö*:=ĦŤĭȣƒ& =' 2 ?= 1 Bq *Ɨă= 137Cs @ƻÁī¿'Ʉȹ 0 0.01 0.1 1 10 100 1000 10 ǵǁȥ@Ǹ= 50 Ā+ńȫ*£*ŝƍ= 137 137m 摂取後経過時間 (日) Cs ÜÝ£&Ɖę>= Ba +įóǐ +ƨƯ,Ʉ PB @ğx) 'Ʒ 46000 BqɄ Ò 6-2 ī¿ć 7 ĸƕ*bmOBpams+ ī¿ć 7 ĸƕ*ğx@Ȫã 6 qŀȫĠƿ' ğx@ȪãÙÅ'ğx) ÙÅ Ʒ 22000 Bq 'ĵhWm+ǲŉƼŋ;ǯƨ +ƴrö*:= 137mBa +ƨƯĦŤȥĽ ȫÝ³ 8;>=+ !Ʉö'ƴ*:< 137mBa Þ 1Bq 経口摂取時の尿・糞による積算排泄量 (Bq). 4. 4. 1010.

(27) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. 3.6 bmOBpams+ğx*:=ôǕ* =ǥūÉ¾Å+ąȷ 137 Cs @£ī¿'+ PB ğx*:=£Ȣ ǫ-ǁȥ+ů,Ʉ£+ 137Cs Ǌǚrǥū ;ôǕ*¤ċƈ'ɄPB 137Cs @¿<Ȓ 5ɄôǕ&ǥū*¤É¾>=+@ȮŚɄßǕ @%ƴ'Þ*Ȱº>='&ǧ?> =+7Ʉǁȥů°ŋ,ôǕ* = 137Cs +ǥū0+É¾Å*è=ǁȥů°ŋɄ PB @ğx'+ôǕ* =ǥū0+É¾ Å*(+: *ąȷ@À=Ǽ1 Ǫ 4 ,ɄęŗŴ 137Cs @ 1 Bq ƻÁī¿ '*ɄƻÁī¿ć 7 ĸƕ* PB +ğx@Ȫã 168 ĸȫğx@ƿ'+í°ǁȥ+ůƄ 'ǥū0+É¾Å+Ȭ@Ơ8+& = Ǫ 4 ǥūÉ¾Å'í°ǁȥůƄ[%] É¾Å ůƄ. 0.01 44.5. 0.2 40.3. 0.3 37.6. 0.4 34.5. 0.5 30.9. PB ğx*Ȭ=ǡÓƘ+ġȧ&,Ʉğx Ȫãī¿ć 7 ĸ £Ʉğxńȫ@Ʒ 3 qŀ; 6 qŀŃ4>Ʉ+'+ǫ-ǁȥ+ů° ŋ,ğx) ÙÅ+ 40ɉ50%& ='Ȕ1; >% =Ǫ 4 +Ƽŋ&,ɄPB @ğx' +ôǕ* = 137Cs +ǥū0+É¾Å 20% :<ô ÙÅ*,ɄǡÓƘ+ġȧ@Ų '&=Ʉ>:<ß ÙÅ,ƕê' % =ğx°ŋ,ńĆ&) ğx+°ŋ@ì ȥƒ*©Ĵ=7*ɄǥūÉ¾Å,ȤǮ)Ð æ& =. 137. Cs ' 137mBa +£±ĖhWmƏ)=' *:=ŝƍįóǐ0+{)ąȷ'ǲŉƼŋ,ř +Ȗ<& = Cs ' 137mBa Æt+£±ĖhWm*Ĉ ',Ʉtǝ* 137Cs ' 137mBa ,įóÿǩ*) =7ɄÄƺǅ+ŝƍįóǐ,23Æ*)= ĵhWm&,ȼŎƮ :.Ȍƺǅ*èÔ= 137m Ba ,Ƹĺǥū£*Ě=7ɄȼŎƮ : .Ȍƺǅ+ 137mBa +ŝƍįóǐ, 137Cs *ş1 %ô)<Ʉǥū£+ 137mBa +ŝƍįóǐ , 137Cs ß)='|ĕ>=ǲŉ*: <+ȟ @ìȥƒ*ĻƟ*Ơ'& 2) ĵhWm&,ȼǪȶ*Ƥǧ% 137Cs , ǥū*¤.Ě<Ʉ137mBa ,ȼǪȶ*ƍ4= +7ɄȼǪȶ&+ 137Cs +ŝƍįóǐ,Ʉ 137m Ba *ş1%ô)='|ĕ>=ǲŉ *:<+ȟ @ìȥƒ*ĻƟ*Ơ' & 3) ĵhWm* %ǥū£+ 137mBa +ŝƍįó ǐ, 137Cs *ş1%ßɄ4Ʉǥū;ß ǕuȢ0+Ƥǧȗā8 137Cs *ş1%ß +7ɄßǕuȢ* = 137mBa +ŝƍį óǐ, 137Cs :<ß)='|ĕ>=ǲ ŉ*:<+ȟ @ìȥƒ*ĻƟ*Ơ' &. 1). 137. ƅhWm&,Ʉ ȋ*¦ýįóǐȥ£ +ƺǅ+Ȇȥ*Đ%¦ȣ>í°ǁȥǸ >=ɄĵhWm&,ǹƹ*ìǆ>ǁųÎ ë'*ŝƍįóǐ@š7Ʉ+ŝƍįóǐȥ* ×$ƭǁȥrí°ǁȥ@ǳƯ=+7Ʉ ĵhWm&ª*ìǆ>ǁųÎë+ƭǁ ȥƅhWm*ş1%Ⱦ7*Ǹ>% = ɄĵhWm&š7;>í°ǁȥ'ƅhWm &+Ǹ*,ß)ü,)"ƺǅǢȤ ı@Ǉė%í°ǁȥ@š7=Şȱ&ƅhWm '+üĝ!Ū>Ʉí°ǁȥ,yǈ&23Æ *)"% = PB ğx*:=ɄęŗŴ@òȅ' 137Cs ƻÁī¿*Ȭ=£Ȣǫ-ǁȥ+ů°ŋ+ OeinsOjp,Ʉğx) ÙÅ*,ôǕ* Ƥǧ% 137Cs ôǕ* % 100%ɁǳƯu , 99%ɂǥū*É¾>Ʉǥū@% ȋ*Ƥ ǧ='ɄğxÙÅ*,ɄǕǊċƈ9ǥū &ôǕ*¤¦ť> 137Cs + 1%ǥū*¤É¾ >ɁǪ 4 Ƭ 1 Qmɂ Ʉŝ< 99%,ßǕuȢ*Ƥ ǧ='ì%ǧ ɄPB ğx+°ŋ@ǲŉ v*ǲŉ&ĉ;>Ƽŋ@ĲƇ=. 4. 4'7 ņƧ&,Ʉĵ*Īŏ>ǕǊċƈȝƥ@È 6 Cs +£±ĖhWmɄ4Ʉ137Cs +åōƦ& = 137mBa +£Ģ± 137Cs 'Ə)='@ Ǉėĵ)£±ĖhWm@ƊɄPB + ğx*:=£Ȣǫ-ǁȥ+ů°ŋ@ǲŉ ;*ɄPB +ǫ-ǁȥů°ŋ,ɄCs ôǕ* %ǥū*¤É¾>=Å*è ='Ǉ

(28) ;>=7Ʉǁȥů°ŋ*¼3ǥū 0+É¾Å+ąȷ8ŒǴ ęǁȥǸboLkf*ĵhWmâ ă*ƺ5Ȓ4>% =,ɄĵhWm@ƑǪ ĳƃ 8 *ĩȐ>% = 134Cs ' 137Cs *Ȭ=Ʉ ęŗŴ@òȅ* 1Bq ǥūŧ'+Äŗ ƒÎë+ƭǁȥɄí°ǁȥɄ137m Ba +ðxƄ+ ǳƯƼŋ'şȏƟǺĳƃ 8 *ĩȐ>%. =,ņǲŉ&:¤ƅ>ɄĵhWm+ƺ5 Ȓ5,âă*ǧ?>% ='©Ĵ& 1111.

(29) 東北工業大学紀要第 40 号（2020）. 1). PB ğx+°ŋ+ƕê'%ǡÓƘ+ġ ȧ[17]*Ĉ ɄůƄ 40%ɉ50%@ħƊ='Ʉ +ƲÑ+ůƄ@Ȟę=*,ɄPB +ğx ȪãĽń,Ȝ'8ī¿ć 1 qŀ £&)> -);Ʉ4Ʉğxńȫ,Ɯ'8 3 qŀ uďǮ& ='Ơ>ğxńȫ 6 q ŀ@ȉ

(30) %8ů°ŋ,ô 7Ʉğx@ 6 qŀ uƾƿ='+Ł°Ē,ô PB ğx+ţƐ°ŋ@u=*,Ʉī¿ć&= ĺğx@ȪãɄ3 qŀ; 6 qŀƥāğ x@ƿ=ďǮ ='ǲŉƼŋ;© Ĵ>= 2) PB @ğx) ÙÅ*,ɄȼǪȶɄßǕÛɄ ƼǕɄƮǉɄǙǚɄȇǟȼȽɄğxÙÅ *,ßǕÛɄƼǕɄȼǪȶ+ƭǁȥß )=ğxÙÅ*,ßǕvȢÛɄƼǕ@Ȱ ƺǅrÎë+ȹǵƭǁȥƷ¶¦*ůõ =ɄßǕvȢÛ+ƭǁȥ,Ʒ 40%Úß= ƺǅǢȤı&Ȥ5>%Ǹ>=ȹ ǵí°ǁȥ+ůƄ,Ʒ 50%*)= PB +ğx*:< 137Cs ôǕ&ǥū*¤É¾ >) ÙÅɄßǕ@Ȱ£ƺǅ+ 137Cs ŝƍ įóǐ,ğx) '*ş1%ůõɄ+ ƼŋɄ>;+ƺǅ@ǁų'=£Ȣǫ-, ů='*)=tĶɄßǕ+ŝƍįóǐ ,ğx*:<Ú®=7ɄßǕ :.ȳĨ =ƺǅ+ǫ-ǁȥ,ğx) '*ş1% Ú®='*)= 3) PB @ğx) 'ɄƻÁī¿> 137Cs +Ʒ 80%ö@%ĦŤ>Ʉŝ<+ 20% ƴ@%ĦŤ>=ɄğxÙÅ*,Ʉ ö*:=ĦŤƷ 60%*ůõɄƴ*:=ĦŤ Ʒ 40%*Úß=Þ* 50ɀĦŤ>=ī ¿ć+ƻȝĽȫ,Ʉğx) ',Ʒ 90 ĸ & =ɄğxÙÅ,Ʒ 40 ĸ*)<Ʉŝ ƍįóǐ¶ů=ńȫ,Ʒ 50 ĸƜ)= PB +ğx*:<Ʉ 137Cs +£;+ĦŤ ț>Ʉ+ƼŋɄǫ-ǁȥƷ¶¦*ů >='@Ơ% = 4) örƴ@% 137mBa Þ0ĦŤ>=ȥ ,Ʉ137Cs +ÜÝ&£&Ɖę>= 137mBa + įóǐȥ+Ʒ 0.02%& <Ʉ£&Ɖę> 137m Ba +ßȢ¦£&Ūŵ% = "%ɄPB ğx*:=ǫ-ǁȥ+ů°ŋ* ¼3 Ba +ĵ£±ĖhWm*:=ĦŤ°ŋ +ąȷ,2'A() 'Ǉ

(31) ;>Ʉǫ-ǁȥ +ů°ŋ, 137Cs +Þ0+ĦŤ&Ɖ%. = 5) PB @ğx'+ôǕ* = 137Cs +ǥ ū0+É¾Å 20%:<ô ÙÅ*,Ʉǡ ÓƘ+ġȧ@Ų'&=PB ğx 1212. +°ŋ@ìȥƒ*©Ĵ=7*ɄǥūÉ¾ Å,ŒǴ1Ðæ& = ĵ*Īŏ>£±ĖhWm[8]&ŒǴ 137Cs +ƻÁī¿*ò= PB +ğx*:=ǫǁȥů°ŋ,ɄĪŏ>hWm+×*)" hWm[4]&ǸƼŋ[3]'23Æ& = 'Ơ>ɄǡÓƘ+ġȧ£ï[17]*Åǜ =Ƽŋ& ='ƟǺ>ĵ£±Ėh Wm&Ǹ> 137Cs :. 137mBa + ȋrÄ ƺǅ* =ŝƍįóǐ :.örƴ*:=Þ 0+ĦŤȥ+ĽȫÝ³; PB +ğx*:=ǫǁȥů+gHZPfƇǲ& PB @ğx'+ôǕ* = 137Cs +ǥū 0+É¾Å,ɄPB ğx*:=ǁȥů°ŋ* ąȷ=7ɄôǕ* = 137Cs +ǥūÉ¾ Å+íű9 137Cs :. 137mBa +£Ģ±+Ǳ ű@£±ĖhWm'şȏrŒǷ='*: <ɄPB +ğx*:=ǫ-ǁȥů°ŋ,:< Ȼ&=Ɵā@8"%ìȥƒ*©Ĵ&=: *)='ńĆ>=. ». Ǉ. ĳ. ƃ. [1] ôźĄɄêǭÌƶɄňņǿtȡǣɄįó ǁ+Ƣé Ɖąȷ :.ȭĊ'ȰºŇ ~³éÆɄ2012Ɇ [2] įóǁµéǀÅƝƩěƔɄȴŅǠłɄŰ« táǂįóǐ+ȰºĞǨ Ģ±'Ȱ Ō+gHZPfɄȀǽơNDFpVC`C KɄ1996Ɇ [3] őƋàȡɄôŊē}ǕǊċƈ@È6±Ė hWm*:=bmOBpamsğx+ 137Cs £Ȣǫ-ǁȥȎů°ŋ+ŒǴɄŇ´úœ ßéƶǮɈƇúéǂrĳơéǂɄƬ 36 ÃɄpp.1-11Ʉ2016 Ā 3 ŀɆ [4] R.W.Leggett, L.R.Williams,D.R.Melo and J.L.Lipsztein,”A physiologically based biokinetic model for cesium in the human body”, The Science of the Total Environment 317,pp. 235-255,2003. [5] ICRP, ICRP PUBLICATION 68,”Dose Coefficients for Intakes of Radionuclides by Workers, Replacement of ICRP Publication 61 ”, Pergamon Press,1994, [6] ICRP, ICRP PUBLICATION 71,”Age-dependent Doses to Members of the Public from Intake of Radionuclides : Part 4 Inhalation Dose Coefficients”, Pergamon Press,1995, ICRP, ICRP PUBLICATION 72,”Age-dependent.

(32) Cs および娘核種 137mBa の新体内動態モデルに基づくプルシアンブルー投与による内部被ばく線量低減効果の検討（梅田・小林）. 137. Doses to Members of the Public from Intake of Radionuclides : Part 5 Compilation of Ingestion and Inhalation Dose Coefficients”,Pergamon Press,1995. [7] ICRP, ICRP PUBLICATION 119, “Compendium of Dose Coefficients based on ICRP Publication 60”, ELSEVIER ,2012. [8] R.W.Leggett, ”Biokinetic models for radiocaesium and its progeny”, Journal of Radiological Protection 33,pp.123-140,2013. [9] ICRP, ICRP PUBLICATION 67,”Age-dependent Doses to Members of Public from Intake of Radionuclides : Part 2 Ingestion Dose Coefficients”,Pergamon Press,1993. [10] ICRP, ICRP PUBLICATION 60,” 1990 Recommendations of the International Commission on Radiological Protection”, Pergamon Press,1991. [11] őƋàȡɄôŊē}įóĒōƦ+£ Ȱº*:=£Ȣǫ-ǁȥ+ů°ŋ*#. %ɄŇ´úœßéƶǮɈƇúéǂɄƬ 34 ÃɄpp.1-17Ʉ2014 Ā 3 ŀɆ [12] ICRP, ICRP PUBLICATION 30,”Limits for Intakes of Radionuclides by Workers”,Part 1,Pergamon Press,1979. [13] ICRP, ICRP PUBLICATION 100, “Human Alimentary Tract Model for Radiological Protection”, ELSEVIER ,2006. [14] RSIC COMPUTER CODE COLLECTION,” SEECAL 2.0 Program to Calculate Age-Dependent Specific Effective Energies”, RADIATION SHIELDING INFORMATION CENTER CCC-620,1995. [15] A.C.Hindmarsh, “GEAR : Ordinary Differential Equation System Solver”, Lawrence Livermore Laboratory UCID-30002 Rev.3, December 1974. [16] øÁŜĘǫ-ǁȥ+űìrǸdZi Bm £Ȣǫ-*# %ɄƀƇɄ 36(1),pp.11-17，2001． [17] Health Protection Agency, ”Use of Prussian Blue (Ferric Hexacyanoferrate) for Decorporation of Radiocaesium Advice from the Health Protection Agency”, Documents of the Health Protection Agency,2010.. 1313.

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