⑔ጟ⋵଻ஜⅣႺ⎇ⓥᚲᐕႎ╙ภ㧘㧙㧘ේ⪺⺰ᢥណ᳓↪ེ᧚ߦ↱᧪ߔࠆ㋦ᳪᨴ੐଀⍹ᯅⲢሶ㧖㧘᧻የብ㧖㧘ਛ᧛෶ༀ㧖㧘╣የᢕሶ㧖㧘਄↰ୃ㧖ᶏ᳓⹜ᢱ䈎䉌ⅣႺၮḰ୯䋨㪇㪅㪇㪈㫄㪾㪆㫃䋩䉕⿥䈋䉎㋦䈏ᬌ಴䈘䉏䈢䋮㋦䈏ၮḰ୯䉕⿥ㆊ䈚䈢ේ࿃䉕ᬌ⸛䈚䈢⚿ᨐ䋬ណ᳓䉕ⴕ䈦䈢ᆔ⸤ᬺ⠪䈏૶↪䈚䈩䈇䈢䊊䉟䊨䊷䊃ណ᳓ེ䈏ᳪᨴḮ䈪䈅䉎䈖䈫䈏䉒䈎䈦䈢䋮䈖䈱䊊䉟䊨䊷䊃ណ᳓ེ䈱บᐳ䈱ਛ䈱䈍䉅䉍䈮䈲㋦䈏૶↪䈘䉏䈩䈇䈢䋮䉁䈢䋬บᐳធวㇱ䈮䈲㓗㑆䈏䈅䉍䋬ᶏ᳓䈏ኈᤃ䈮ଚ౉䈪䈐䉎᭴ㅧ䈫䈭䈦䈩䈇䈢䋮䉋䈦䈩䋬䈍䉅䉍䈱㋦⴫㕙䈮㋦䈱ൻว‛䋨 Laurionite ෸߮ Cerussite㧕ࠍਥᚑಽߣߔࠆ⊕⦡☳૕߇↢ᚑߒ㧘ߘࠇ߇㧘⹜ᢱኈེߦᶏ᳓ࠍ౉ࠇࠆ㓙㧘บᐳㇱߦଚ౉ߒߚᶏ᳓ߣߣ߽ߦ⹜ᢱኈེߦᷙ౉ߒߚ
ߎߣߦࠃࠅ㧘㋦ᳪᨴࠍᒁ߈⿠ߎߒߚ߽ߩߣ⠨߃ࠄࠇߚ㧚㨇ࠠ࡯ࡢ࡯࠼ :㋦㧘቟ቯห૏૕㧘Laurionite㧘Cerussite㧘ࡂࠗࡠ࡯࠻ណ᳓ེ㨉㧝⛯ߌߚ㧚ណ᳓ߪ㧘ᐕ᦬෸߮ᐕ᦬ -ᐕ᦬ߪߓ߼ߦ
ᐕ᦬ߦᶏ᳓⹜ᢱ߆ࠄೋ߼ߡⅣႺၮḰ୯㧔ߪ A ␠߇ⴕ޿㧘ᐕ-᦬ߪ B ␠߇ⴕߞߚ㧚ኻ⽎ᶏၞmg/l㧕ࠍ⿥߃ࠆ㋦߇ห৻ᶏၞߩᢙ࿾ὐߢᬌ಴ߐࠇߚ㧚⹜ߦᵹ౉ߔࠆᴡᎹߦߟ޿ߡߪ㧘ᐕ᦬෸߮ᐕ᦬ߦᢱណขߪ㧘ᆔ⸤ᬺ⠪߇ࡃࡦ࠼࡯ࡦណ᳓ེ෸߮ࡂࠗࡠ࡯࠻ⅣႺၮḰὐ࿾ὐߢᏒᓎᚲ෸߮ᧄ⎇ⓥᚲ߇ណ᳓ࠍⴕߞߚ㧚ណ᳓ེࠍ↪޿ߡⴕ޿㧘⋥ߜߦᧄ⎇ⓥᚲߦ៝౉ߐࠇ㧘ಽᨆ㧞࡮㧞ᬌ⸛ᣇᴺᰴߩࠃ߁ߥේ࿃߇⠨߃ࠄࠇߚߩߢ㧘㗅ᰴᬌ⸛ࠍⴕߞߚ㧚߇ⴕࠊࠇߚ㧚ㆊ෰ߦ㧘ኻ⽎ᶏၞߢߪ㧘ᐕߦ-mg/l ᬌ಴ߐࠇߚ੐଀ߪ޽ࠆ߇㧘ߘࠇએ㒠㧘㋦ߪᬌ಴ਅ㒢୯㧔ᐕᐲ㧦 mg/l㧘ᐕᐲએ㒠㧦 mg/l㧕એਅߢ޽ߞߚ㧚߹ߚ㧘ߎߩᶏၞߦᵹ౉ߔࠆᴡᎹߢߪ㧘ᐕ๟ㄝ⺞ᩏ ኻ⽎ᶏၞߦᵹ౉ߔࠆᴡᎹ᳓ߩ⺞ᩏ ㋦ࠍ૶↪ߒߡ޿ࠆ੐ᬺ႐⺞ᩏ㧔Ꮢᓎᚲ㧕⹜ᢱណข෸߮ಽᨆߦ⥋ࠆᎿ⒟ᐲએ㒠㧘㋦߇࿁ᬌ಴ߐࠇߡ޿ࠆ߇㧘޿ߕࠇ߽ⅣႺၮḰ ᐓᷤ‛⾰ߦࠃࠆಽᨆ਄ߩ໧㗴୯એਅߢ㧘㒽ၞ߆ࠄߩ㋦ᳪᨴߩళ୥ߪߺࠄࠇߥ߆ߞߚ㧚 ⺞ᩏ⦁૕߆ࠄߩᳪᨴ‛⾰ߩṁ಴ⅣႺ⺞ᩏߢߪ㧘ࠦࠬ࠻࡮ല₸ᕈߩ㕙߆ࠄኾ㐷ᬺ⠪߳ߩ ࿕ቯ⹜⮎෸߮⹜ᢱኈེߩᳪᨴ

ᆔ⸤߇ㅴߺ㧘⹜ᢱណข㧘៝ㅍ㧘ಽᨆߥߤߩᎿ⒟߇⚦ಽൻ ណ᳓ེߩᳪᨴߐࠇࠆ௑ะߦ޽ࠆ㧚ߎߩ᭽ߥ⁁ᴫߩਛߢ㧘ಽᨆߩ♖ᐲࠍౕ૕⊛ߥᣇᴺ╬ߦߟ޿ߡ㧘એਅߦㅀߴࠆ㧚⏕଻ߔࠆߚ߼ߦߪ㧘ో૞ᬺᎿ⒟ߩ▤ℂ߇㊀ⷐߣߥࠆ㧚㧞࡮㧞࡮㧝ᶏ᳓෸߮ᴡᎹ᳓ߩಽᨆᣇᴺ੹࿁㧘㋦߇ၮḰ୯ࠍ⿥ㆊߒߚේ࿃ࠍⓥ᣿ߔࠆߚ߼㧘๟ណ᳓ᤨߦ⎣㉄ࠍ⹜ᢱߩ%ട߃ߚ㧚⎣㉄ࠍട߃ߚ⹜ᢱ

ㄝ⺞ᩏࠍⴕ߁ߣߣ߽ߦ㧘⹜ᢱណข෸߮ಽᨆߦ⥋ࠆฦᎿ⒟ml ߦႮ㉄mL ෸߮⎣㉄mL ࠍട߃㧘ࡎ࠶࠻ࡊ࡟࡯࠻

ߦ߅ߌࠆᳪᨴⷐ࿃ࠍᬌ⸛ߒߚߩߢႎ๔ߔࠆ㧚਄ߢടᾲಽ⸃ߒ㧘 ml ߦቯኈߒߚ㧚᷹ቯߪ㧘 ICP ⾰㊂

㧞㧔⋥ធಽᨆᴺ㧕 㧚ౝᮡߪ㧘ࡆࠬࡑࠬ㧔Bi㧕ࠍ૶↪ߒߚ㧚ಽᨆ⸘㧔ICP-MS㧕㧔 Perkin Elmer㧦 ELAN㧕ߢⴕߞߚᣇᴺ㧞࡮㧝⺞ᩏ࿾ὐ෸߮⺞ᩏᦼ㑆ߐࠄߦ㧘ᓧࠄࠇߚ୯ࠍ⏕⹺ߔࠆߚ߼㧘࿑ߩࡈࡠ࡯࠴ࡖኻ⽎ᶏၞߩ⺞ᩏ࿾ὐߪ㧘 St -ߩ࿾ὐߢ޽ࠆ㧚ቯ࡯࠻ߦᓥߞߡ㧘⹜ᢱߩ೨ಣℂࠍⴕ޿㧘 ICP-MS ෸߮ ICPὐ᷹ⷰߪᐕ࿁ߢ㧘ᐕᐲߪ᦬ߢ޽ߞߚ㧚ߒ߆ߒ㧘ߎ⊒శಽᨆ⸘㧔ICP-AES㧕㧔Perkin Elmer㧦 OPTIMA㧕ߩߣ߈㧘㋦߇ၮḰ୯ࠍ⿥ㆊߒߚߎߣ߆ࠄ㧘ᐕ᦬ࠃߢ᷹ቯࠍⴕߞߚ㧔ṁᇦ᛽಴ᴺ㧕  㧚 ICP-AES ߩ ౝᮡߪ㧘ࠅᲤ᦬࿁ណ᳓ࠍⴕ޿㧘ᳪᨴḮ߇್᣿ߒߚᐕ᦬߹ߢࠗ࠶࠻࡝࠙ࡓ㧔Y㧕ࠍ૶↪ߒߚ㧚㧖 ⑔ጟ⋵଻ஜⅣႺ⎇ⓥᚲ

㧔‫ޥ‬⑔ጟ⋵ᄥቿᐭᏒᄢሼะ૒㊁㧕㧖 ర⑔ጟ⋵଻ஜⅣႺ⎇ⓥᚲ

㧔‫ޥ‬⑔ጟ⋵ᄥቿᐭᏒᄢሼะ૒㊁㧕㧖 ╳⚡଻ஜ⑔␩ⅣႺ੐ോᚲ㧔‫ޥ‬-⑔ጟ⋵ᄢ㊁ၔᏒ⊕ᧁේৼ⋡- ╳⚡✚วᐡ⥢㧕⹜ᢱ mL

ୃℂߒߚ〔߇޽ࠅ㧘ࡐ࡝ࡆࡦࠍ࿕ቯߔࠆߚ߼㧘ࠧࡓࡃࡦ⎣㉄mL 㧗Ⴎ㉄mL࠼߇↪޿ࠄࠇߡ޿ߚ㧚㩘㨹㩎㩖㩩㩤㨺㩎਄ߢടᾲᶐẃ⹜㛎ࡂࠗࡠ࡯࠻ណ᳓ེ෸߮ࡃࡦ࠼࡯ࡦណ᳓ེࠍ⫳⇐᳓Lߦᤨ㑆ᶐẃߒߚᓟ㧘ߘߩᶐẃ᳓ਛߩ㋦ࠍ᷹ቯߒߚ㧚߹mL ಽᶧ㩥㨺㩎%㩂㨾㩧㉄᳓⚛ੑ㨻㩧㩝㩐㨽㩛mLߚ㧘ࡂࠗࡠ࡯࠻ណ᳓ེߩบᐳㇱ෸߮ࠧࡓࡃࡦ࠼ࠍ⫳⇐᳓㩜㩊㩂㩤㩉㩨㨺㩣㩔㩩㨺㩖㩩㩣ߦᶐẃߒߚᶐẃ᳓㧘ࡂࠗࡠ࡯࠻ណ᳓ེߩኈེౝ஥෸߮ࠧ+ 㨻㩧㩝㩐㨻᳓-Ṣ⚡⦡ߦߥࠆ߹ߢࡓࡃࡦ࠼㓗㑆ߦઃ⌕ߒߚ⊕⦡‛⾰ߩᵞᵺ᳓ߦߟ޿ߡ߽ห

%㩆㩨㨾㩋㩣㩆㩨㩋㨿㩀㩣㩔㩨㩚㩎㩨㉄㩏㩎㩢㨽㩛mL᭽ߦ᷹ቯߒߚ㧚㈶㉄㩖㩨㩋㩣mL㋦฽᦭㊂⹜㛎ࡂࠗࡠ࡯࠻ណ᳓ེߩบᐳㇱᝄߣ߁㧔ಽ㧕ࠍ⸃૕ߒ㧘ਛߩ㊄ዻㇱಽࠍ೥㈶㉄㩖㩨㩋㩣ጀmL 㩕㩨㨺㩀㨺ߦ౉ࠇ㧘㩘㨹㩎㩖㩩㩤㨺㩎਄ߢ⫳⊒ੇ࿕⎣㉄mL 㧗ㆊႮ⚛㉄mLࠅขߞߚ߽ߩ෸߮㊄ዻㇱಽ⴫㕙ߦઃ⌕ߒߚ⊕⦡☳૕ࠍ೸㔌%⎣㉄ߢṁ⸃ߒ㧘mL ߦቯኈᾲಽ⸃ߒ㧘 ICP-MS ߢ ᷹ቯߒߚ㧚࿑ߦ㧘⸃૕ߒߚࡂࠗࡠ

ICP-MS ߹ߚߪ ICP-AES࡯࠻ណ᳓ེบᐳㇱߩ߅߽ࠅ࿑⊕䈇☳ᧃߒߚ߽ߩࠍߘࠇߙࠇ⎣㉄ߢട㩘㨹㩎㩖㩩㩤㨺㩎਄ߢ⫳⊒ੇ࿕࿑ࡂࠗࡠ࡯࠻ណ᳓ེบᐳㇱߩ߅߽ࠅࠍ␜ߔ㧚

ṁᇦ᛽಴ᴺߩࡈࡠ࡯࠴ࡖ࡯࠻

㋦቟ቯห૏૕ߩಽᨆ
㋦߇ᬌ಴ߐࠇߚᶏ᳓ᬌ૕㧔ᐕ᦬ណข㧘 St෸⎣㉄ࠍട߃ߡ޿ߥ޿ᶏ᳓⹜ᢱᬌ૕ߦߟ޿ߡ㧘෸߮㧕ࠍṁᇦ᛽಴ߒߚ㧚บᐳㇱߩਛߩ㊄ዻㇱಽࠍ೥ࠅข߮Ǵ m ߩࡔࡦࡉ࡜ࡦࡈࠖ࡞࠲࡯ߢࠈㆊߒߚᓟ㧘⋥ߞߚ߽ߩࠍᏗ⎣㉄ߢṁ⸃ߒ㧘ห᭽ߦṁᇦ᛽಴ߒߚ㧚߹ߚ㧘ធಽᨆᴺߢಽᨆߒߚ㧚ኻ⽎ᶏၞߢណขߒߚᐩ⾰ᬌ૕㧔 St෸߮㧕ߦߟ޿ߡ㧘㧞࡮㧞࡮㧞Ⴎ㉄෸߮⎣㉄ࠍട߃㧘ࡎ࠶࠻ࡊ࡟࡯࠻਄ߢടᾲಽ⸃ߒ㧘⺞ᩏ⦁⦎ߩṪ⦁ a ෸߮ b ⦁㧔a ⦁ :St-෸߮b ⦁ :Stห᭽ߦṁᇦ᛽಴ߒߚ㧚ߎࠇࠄߩ⹜ᢱߦߟ޿ߡ㧘 ICP-MS -෸߮㧕ߢ⹜ᢱࠍណขߒߚ㧚ᐕ᦬ߩណ᳓ߩ㓙㧘

㧔Perkin Elmer㧦 ELAN DRC㧕 ࠍ૶↪ߒ㧘ᮡḰ‛⾰ NIST⦁ࠍ੤឵ߒߡታᣉߒߚ㧚ࠍ↪޿ߡ㋦቟ቯห૏૕ࠍ᷹ቯߒߚ㧚᷹ቯߒߚ㋦ߩ⾰㧞࡮㧞࡮㧟㊂ᢙߪ㧘㧘෸߮ߢ㧘᷹ቯ୯ߩᄌേଥᢙߪ㧑࿕ቯ⹜⮎෸߮⹜ᢱኈེᐕ᦬ߩណ᳓ᤨߪ㧘ᆔ⸤ᬺ⠪߇࿕ቯ⹜⮎෸߮⹜ᢱኈེࠍ↪ᗧߒߚ߇㧘ᐕ᦬એ㒠ߪ㧘㋦ᳪᨴߩߥ޿࿕

એਅߢ޽ߞߚ㧚บᐳㇱߩਛߩ㊄ዻㇱಽ⴫㕙ߦઃ⌕ߒߚ⊕⦡☳ᧃࠍ೸㔌ቯ⹜⮎෸߮⹜ᢱኈེࠍᧄ⎇ⓥᚲߢ↪ᗧߒߚ㧚㧞࡮㧞࡮㧠X ✢࿁᛬ߦࠃࠆಽᨆ

ߒ㧘X ✢࿁᛬ᴺ㧔ࡑ࠶ࠢ࡮ࠨࠗࠛࡦࠬ㧦MXPA㧕ߦࠃណ᳓ེࠅ㧘᭴ᚑᚑಽࠍಽᨆߒߚ㧚ᴡᎹ᳓ߪࡃࠤ࠷㧘ᶏ᳓ߪ㧘ᆔ⸤ᬺ⠪ߩណ᳓ེࠍ↪޿ߡណ᳓ߒߚ㧚ᆔ⸤ᬺ⠪ A ␠ߪࡃࡦ㧟࠼࡯ࡦណ᳓ེ෸߮ࡂࠗࡠ࡯࠻㧟࡮㧝ណ᳓ེࠍ૶↪ߒ㧘 B ␠ߪࡃࡦ䉯䊛䊋䊮䊄࠼࡯ࡦណ᳓ེߩߺࠍ૶↪ߒߚ㧚⚿ᨐ෸߮⠨ኤ
ಽᨆᴺߩᬌ⸛

ᐕ᦬ߦណ᳓ߒߚᶏ᳓⹜ᢱߦߟ޿ߡ㧘⋥ធಽᨆᴺߦࠃࠅ᷹ቯࠍⴕߞߚ⚿ᨐࠍ⴫ߦ␜ߔ㧚 St-෸߮ ߢ㋦߇ᬌ಴ߐࠇߚᬌ૕ߪ㧘ోߡ A㋦߇ᬌ಴ߐࠇߚ㧚ߎߩ᷹ቯ୯ߩ⏕⹺ࠍⴕ߁ߚ߼㧘೎ߩᣇ␠߇ណ᳓ߒߚᶏ᳓ߢ޽ߞߚߩ

ᴺ㧔ṁᇦ᛽಴ -ICP-MS ᴺ ෸߮ṁᇦ᛽಴ -ICP-AES ᴺ 㧕ߢߢ㧘 A ␠ߩណ᳓ེߩߺᬌ⸛ࠍಽᨆࠍⴕ޿㧘Ყセߒߚ㧔⴫㧕㧚ߘߩ⚿ᨐ㧘 ICP-MS ߦࠃⴕߞߚ㧚บᐳߞߚߎߣ߆ࠄ㧘㋦ߩᬌ಴ߪ⹜ᢱߩࡑ࠻࡝࠶ࠢࠬߦࠃࠆᐓ

A ␠ߪ㧘a ⦁ߢࡂࠗࡠ࡯࠻ណ
᳓ེ㧘 b ⦁ߢࡃࡦ࠼࡯ࡦណ᳓

ࠆ⋥ធಽᨆᴺߣṁᇦ᛽಴ߦࠃࠆಽᨆᴺߩ᷹ቯ୯߇ㄭ߆࿑ࡂࠗࡠ࡯࠻ណ᳓ེེࠍ૶↪ߒߡ޿ߚ㧚ࡂࠗࡠ࡯࠻ណ᳓ེࠍ࿑ߦ␜ߔ㧚૶↪ߐࠇߚࡂࠗࡠ࡯࠻ណ᳓ེߪ㧘ฎ޿߽ߩߢ㧘บᐳㇱ╬ߦᷤ╬ߩಽᨆ਄ߩ⇣Ᏹ୯ߢߪߥߊ㧘ታ㓙ߦ⹜ᢱਛߦ㋦߇ሽ࿷ߒߡ޿ࠆߎߣ߇⏕⹺ߐࠇߚ㧚߹ߚ㧘৻⥸⊛ߦ㋦ߩ᳓߳ߩṁ⸃ᐲߪૐ޿ߎߣ߇⍮ࠄࠇߡ޿ࠆ  㧚ᳪᨴߩ޽ߞߚᶏ᳓ࠍ෸߮Ǵ m ߩࡔࡦߺࠍ੤឵ߒߡណ᳓ߒߚ㧚ߒ߆ߒ㧘 b ⦁ߢណ᳓ߒߚ Stࡉ࡜ࡦࡈࠖ࡞࠲࡯ߢࠈㆊߒߡ᷹ቯߒߚߣߎࠈ㧘㋦ߪ

ߢౣ߮ᬌ಴ߐࠇ㧘 a ⦁ߢߪᬌ಴ߐࠇߥ߆ߞߚߎߣ߆ࠄ㧘

mg/l ᧂḩߢ޽ߞߚ㧚ࠃߞߡ㧘⹜ᢱਛߩ㋦ߩᒻᘒߪ㧘 ⦁૕ߦ↱᧪ߔࠆᳪᨴߢߪߥ޿ߣផቯߐࠇߚ㧚Ộᕈߢ޽ࠆߎߣ߇ࠊ߆ߞߚ㧚㧟࡮㧠ᶏ᳓෸߮ᴡᎹ᳓ߩಽᨆᐕ᦬෸߮ᐕ᦬ߦ㧘ኻ⽎ᶏၞߦᵹ౉ߔࠆᴡᎹ⴫

⇣ߥࠆಽᨆᴺߦࠃࠆ㋦ߩಽᨆ⚿ᨐ᳓㧔ⅣႺၮḰὐ࿾ὐ㧕ߦߟ޿ߡ㧘㋦ߩಽᨆࠍⴕߞߚ߇㧘⋥ធಽᨆᴺోߡ mg/l ᧂḩߢ޽ߞߚ㧚߹ߚ㧘ᐕ᦬એ㒠㧘

ṁᇦ᛽಴ᴺ

⺞ᩏ࿾ὐ

ICP-MS

ICP-MS

ICP-AESណ᳓ߩᆔ⸤ᬺ⠪߇ A ␠߆ࠄ B ␠ߦ߆ࠊߞߚ㧚 B ␠߇ណSt᳓ߒߚ⹜ᢱߪ㧘ోߡߩ࿾ὐߢmg/l ᧂḩߢ޽ߞߚ㧚Stߎࠇࠄߩߎߣ߆ࠄ㧘㋦ߪ㧘ᴡᎹ߆ࠄኻ⽎ᶏၞߦᵹ౉ߒStߚ߽ߩߢߪߥߊ㧘A ␠ߩណ᳓↪ౕߦ㋦ߩᳪᨴḮ߇޽ߞߚSt߽ߩߣផኤߐࠇߚ㧚StSt㧟࡮㧡St㧟࡮㧡࡮㧝Stࡂࠗࡠ࡯࠻ណ᳓ེ෸߮ࡃࡦ࠼ࡦណ᳓ེࠍ⫳⇐᳓ߦᶐStẃߒߡ㋦ࠍ᷹ቯߒߚ⚿ᨐ 㧘 ࡃࡦ࠼ࡦណ᳓ེᶐẃ᳓ߪ 㧘St

mg/l ᧂḩߢ޽ߞߚ߇㧘ࡂࠗࡠ࡯࠻ណ᳓ེᶐẃ᳓ߪ㧘

St㧙

mg/l ᬌ಴ߐࠇߚ㧚ߘߎߢ㧘ࡂࠗࡠ࡯࠻ណ᳓ེ߇㋦㧔න૏㧦mg/l㧕ߩᳪᨴḮߢ޽ࠆߣ⠨߃㧘ࡂࠗࡠ࡯࠻ណ᳓ེߩኈེౝ஥ࠍ࿕ቯ⹜⮎෸߮⹜ᢱኈེ߆ࠄߩᳪᨴߦ㑐ߔࠆᬌ⸛ࠗࡠ࡯࠻ណ᳓ེߪ㧘ࡐ࡝ࡆࡦࠍ࿕ቯߔࠆߚ߼㧘ࠧࡓࡃࡦណ᳓ེ߆ࠄߩᳪᨴߦ㑐ߔࠆᬌ⸛ᶐẃ⹜㛎⚿ᨐ

ᵞᵺߒ㧘㋦ࠍ᷹ቯߒߚ߇㧘mg/l ᧂḩߢ޽ߞߚ㧚ࡂ㧟࡮㧞ᐕ᦬એ㒠㧘ᧄ⎇ⓥᚲߢ࿕ቯ⹜⮎෸߮⹜ᢱኈེ࠼߇૶↪ߐࠇߡ޿ߚ㧔࿑㧕߇㧘ߎߩࠧࡓࡃࡦ࠼ߩ㓗㑆ࠍ↪ᗧߒ㧘ᆔ⸤ᬺ⠪߇ណ᳓ࠍⴕߞߚ߇㧘⴫ߦ␜ߔࠃ߁

ߦ⊕⦡‛⾰߇ઃ⌕ߒߡ޿ߚ㧚ࠃߞߡ㧘ࠧࡓࡃࡦ࠼ߩᶐẃߦ㧘ଐὼ㧘㋦߇ᬌ಴ߐࠇߚߎߣ߆ࠄ㧘ᬌ಴ߐࠇߚ㋦ߪ㧘᳓෸߮⊕⦡‛⾰ᵞᵺ᳓ߦߟ޿ߡ᷹ቯࠍⴕߞߚ㧚߹ߚ㧘ࡂ࿕ቯ⹜⮎෸߮⹜ᢱኈེ↱᧪ߢߪߥ޿ߣផቯߐࠇߚ㧚ࠗࡠ࡯࠻ណ᳓ེߩบᐳㇱࠍ⫳⇐᳓ߦᶐẃߒߚᶐẃ᳓ߦߟ޿ߡ߽᷹ቯߒߚ㧚⚿ᨐࠍ⴫ߦ␜ߔ㧚ࡂࠗࡠ࡯࠻ណ᳓ེ⴫࿾ὐߩบᐳㇱᶐẃ᳓߆ࠄ mg/l ᬌ಴ߐࠇߚߎߣ߆ࠄ㧘บᶏ᳓ߩ㋦᷹ቯ⚿ᨐᐕᐳㇱ߇㋦ߩᳪᨴḮߢ޽ࠆߣ⠨߃ࠄࠇߚ㧚ᐕ᦬᦬᦬᦬St

St

⹜ᢱ㋦㧔mg/l㧕Stࠧࡓࡃࡦ࠼ᶐẃ᳓mg/lSt



ࠧࡓࡃࡦ࠼㓗㑆ߩ⊕⦡‛⾰ᵞᵺ᳓mg/lSt





บᐳㇱᶐẃ᳓mg/lSt







St









St







A ␠ߩੌᛚࠍᓧߡ㧘ࡂࠗࡠ࡯࠻ណ᳓ེߩบᐳㇱࠍ⸃૕

⴫

㧟࡮㧡࡮㧞

ࡂࠗࡠ࡯࠻ណ᳓ེㇱ૏೎ߩ㋦ಽᨆ⚿ᨐ㋦฽᦭㊂⹜㛎⚿ᨐ

St







ߒߚߣߎࠈ㧘߅߽ࠅߣߒߡ౞ᩇ⁁ߩ㊄ዻ߇౉ߞߡ޿ߚ㧚St





߹ߚ㧘߅߽ࠅ⴫㕙ߦߪ⊕⦡ߩ☳૕߇ઃ⌕ߒߡ޿ߚ㧔࿑㧕㧚

St

߅߽ࠅ෸߮⊕⦡☳૕ߩ㋦฽᦭㊂ࠍ᷹ቯߒߚߣߎࠈ㧘ߘࠇ㧔න૏㧦mg/l㧕ߙࠇ෸߮㧑ࠍ␜ߒ㧘㋦ߩ⚐ᐲ߇㕖Ᏹߦ㜞޿ߎߣᵈ㧕✂ដߌㇱಽߪ㧘a ⦁ߢណ᳓ߒߚ࿾ὐ
㧟࡮㧟⺞ᩏ⦁૕߆ࠄߩᳪᨴߦ㑐ߔࠆᬌ⸛߇ࠊ߆ߞߚ㧚ࡂࠗࡠ࡯࠻ណ᳓ེߢ⹜ᢱࠍណ᳓ߔࠆ㓙ߦ㧘ណ᳓ེࠍ௑

⴫ߦ㧘 a ⦁ߢណ᳓ߒߚ࿾ὐࠍ✂ដߌߢ␜ߔ㧚ᐕߌߡᵈ౉ߔࠆᠲ૞߇ⴕࠊࠇࠆ㧚ߎߩᤨ㧘⊕⦡☳૕߇⹜ᢱ᦬෸߮ᐕ᦬ߦ㋦߇ᬌ಴ߐࠇߚ࿾ὐߪ㧘ోߡ a ⦁ߦᷙ౉ߒߚ႐วߦ㧘㋦ᳪᨴࠍᒁ߈⿠ߎߔ߽ߩߣផኤߐࠇߢណ᳓ߒߚ࿾ὐߢ޽ߞߚߚ߼㧘᦬ߩណ᳓ᤨߦߪ㧘⦁ߩߚ㧚㧟࡮㧡࡮㧟㋦቟ቯห૏૕ಽᨆ⚿ᨐ⿥߃ࠆ㋦߇ᬌ಴ߐࠇߚ㧚⹜ᢱណขߪ㧘ᆔ⸤ᬺ⠪߇ⴕߞߡ㋦ߩ⿠Ḯߣߒߡ㧘ណ᳓ེߩઁߦ㧘ᐩ⾰ߦࠃࠆᏎ߈਄ߍ޿ࠆߩߢ㧘ᳪᨴේ࿃ࠍⓥ᣿ߔࠆߚ߼㧘⹜ᢱណข߆ࠄಽᨆ߽⠨߃ࠄࠇࠆ㧚㋦቟ቯห૏૕Ყߪ㧘㋦ߩ⿠Ḯߦࠃߞߡ⇣ߦ⥋ࠆฦ૞ᬺᎿ⒟ߦߟ޿ߡ㧘એਅߩᚻ㗅ߢᬌ⸛ߒߚ㧚ߥࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ  ߎߣ߆ࠄ㧘ᶏ᳓㧘ᐩ⾰෸߮߅

 ಽᨆ୯ߩ⏕⹺߽ࠅߩ቟ቯห૏૕Ყ㧔 Pb/ Pb ෸߮ Pb/ Pb㧕ࠍ᳞߼ࠆ

ICP-MS㧔 ⋥ធಽᨆᴺ㧕෸߮ṁᇦ᛽಴㧙 ICP-MS ߹ ߚߎߣߦࠃࠅ㧘㋦ߩ⿠Ḯߦߟ޿ߡᬌ⸛ߒߚ㧚ߪ ICP-AES ߢ ಽᨆࠍⴕߞߚ㧚ߘߩ⚿ᨐ㧘㋦ߪ⹜ᢱਛߦ





Pb/ Pb ୯ߪ㧘⋧㆑߇⷗ࠄࠇߥ߆ߞߚ㧚࿑ߦᶏ᳓ߩ

㋦ỚᐲߣPb/Pb ߩ㑐ଥࠍ␜ߔ㧚St෸߮ߩᐩ⾰ߩPb/Pb ୯ߪ㧘෸߮ߢ㧘ᐔဋ୯ߢ޽ߞߚ㧚ሽ࿷ߒߡ޿ࠆߎߣ߇⏕⹺ߐࠇߚ㧚߹ߚ㧘ᶏ᳓⹜ᢱਛߩ㋦ߪ㧘ࠈㆊߒߚ႐ว㧘 mg/lᧂḩߣߥߞߚߎߣ߆ࠄ㧘 Ộᕈߢ޽ࠆߣ⠨߃ࠄࠇߚ㧚ࡂࠗࡠ࡯࠻ណ᳓ེบᐳㇱߩ߅߽ࠅߪ㧘ߢ޽ߞߚ㧚 ㋦ᳪᨴߩ⛮⛯ᕈᐩ⾰෸߮߅߽ࠅߩ቟ቯห૏૕Ყࠍ㧘࿑ౝߦᄥ✢ߢ␜ߔ㧚ᐕ᦬߆ࠄᲤ᦬ណ᳓ߒ㧘ಽᨆߒߚ߇㧘㋦ߪᬌ಴ߐᶏ᳓⹜ᢱߩ Pb/ Pb ୯ߪ㧘-ߩ▸࿐ߦ޽ࠅ㧘߅ࠇߚ㧚߽ࠅߣㄭ޿୯ߢ޽ߞߚ㧚߹ߚ㧘㋦Ớᐲߩ਄᣹㧔St:mg/l㧘 ๟ㄝ⺞ᩏ

St:mg/l St :mg/l㧕ߣߣ߽ߦ㧘 Pb/ Pb ୯ኻ⽎ᶏၞ߳ᵹ౉ߔࠆᴡᎹߩⅣႺၮḰὐߢ㋦ߩಽᨆࠍⴕ

ߪ㧘߅߽ࠅߩ୯ㄭߊߦᄌൻߒߚ㧚ࠃߞߡ㧘㋦ᳪᨴߩ⿠Ḯߞߚ߇㧘ోߡmg/l ᧂḩߢ޽ߞߚ㧚߹ߚ㧘㋦ࠍᄢ㊂ߪ㧘ᐩ⾰ߦࠃࠆᏎ߈਄ߍߢߥߊ㧘߅߽ࠅߢ޽ࠆߣ⠨߃ࠄߦឃ಴ߒߡ޿ࠆ੐ᬺ႐߽ሽ࿷ߒߥ߆ߞߚ㧚ࠇߚ㧚 ࿕ቯ⹜⮎෸߮⹜ᢱኈེ࿕ቯ⹜⮎෸߮⹜ᢱኈེࠍᧄ⎇ⓥᚲߢ↪ᗧߒߚ߇㧘ଐὼ

㪉㪇㪏

㪉㪇㪍

㪧㪹㪆 㪧㪹㪉㪅㪈㪉ߣߒߡ㋦ߪᬌ಴ߐࠇߚߎߣ߆ࠄ㧘࿕ቯ⹜⮎෸߮⹜ᢱኈེ

ᐩ⾰㪉㪅㪈㽲㪉㪅㪇㪏ߦࠃࠆᳪᨴ߇ේ࿃ߢߪߥ޿ߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚㽳㪉㪅㪇㪍䈍䉅䉍

㪉㪅㪇㪋

 ⺞ᩏ⦁

㽴ណ᳓ࠍⴕߞߚ⦎ߩṪ⦁ߩ߁ߜ㧘㋦ߩᬌ಴ߐࠇߚᬌ૕

㪉㪅㪇㪉㪉㪇㪇㪅㪇㪈㪇㪅㪇㪉㪇㪅㪇㪊㪇㪅㪇㪋㪇㪅㪇㪌㪇㪅㪇㪍㪇㪅㪇㪎㪇㪅㪇㪏Ớᐲ䋨㫄㪾㪆㫃䋩࿑ᶏ᳓ߩ㋦Ớᐲߣ቟ቯห૏૕Ყߩ㑐ଥਗ߮ߦᐩ⾰෸߮ࡂࠗࡠ࡯࠻ណ᳓ེߩ߅߽ࠅߩ቟ቯห૏૕Ყߪ㧘ోߡ৻ᣇߩ⦁ߢណ᳓ߐࠇߚ߽ߩߢ޽ߞߚ㧚ࠃߞߡ㧘Ṫ⦁ߩߺࠍ੤឵ߒ㧘ណ᳓ߒߚ߇㧘㋦߇ᬌ಴ߐࠇߚߎߣߩߥ޿Ṫ⦁ߩᣇߢᬌ಴ߐࠇ㧘ߘࠇ߹ߢ㋦ࠍᬌ಴ߒߚ⹜ᢱࠍណขߒߡ޿ߚṪ⦁ߩណขߒߚ⹜ᢱ߆ࠄߪᬌ಴ߐࠇߥ߆ߞߚ㧚ࠃߞߡ㧘⺞ᩏ⦁ߦ↱᧪ߔࠆᳪᨴߢߪߥ޿ߣផቯߐࠇߚ㧚 ណ᳓ེᆔ⸤ᬺ⠪߇૶↪ߒߡ޿ߚࡂࠗࡠ࡯࠻ណ᳓ེࠍ⫳⇐᳓ߦ㧟࡮㧡࡮㧠ᶐẃߒߚߣߎࠈ㧘ߘߩᶐẃ᳓߆ࠄ㋦߇ᬌ಴ߐࠇߚ㧚ࠃߞ㋦ߩᒻᘒ߅߽ࠅ⴫㕙ߦઃ⌕ߒߚ⊕⦡☳૕ࠍ೸㔌ߒ㧘X ✢࿁᛬ᴺߡ㧘ࡂࠗࡠ࡯࠻ណ᳓ེ߇ᳪᨴḮߢ޽ࠆߣ⠨߃ࠄࠇߚ㧚․ߦࠃࠅ㧘᭴ᚑᚑಽࠍಽᨆߒߚ㧚⚿ᨐࠍ࿑ߦ␜ߔ㧚ਥᚑߦࡂࠗࡠ࡯࠻ណ᳓ེߩบᐳㇱߩᶐẃ᳓ߢ㜞Ớᐲߩ㋦߇ᬌಽߪ㧘 Laurionite PbClOH ෸߮ Cerussite PbCO ߢ޽ߞ಴ߐࠇߚ㧚บᐳࠍ⸃૕ߒ㧘ਛߩ߅߽ࠅߩ㋦฽᦭㊂ࠍ᳞߼ߚ㧚ጊፒࠄߩႎ๔ߢߪ㧘㊄ዻ㋦ߪ㔎᳓ߣᄢ᳇ߦᤴߐࠇࠆߚߣߎࠈ㧘߅߽ࠅߪ㋦ߢߢ߈ߡ޿ࠆߎߣ߇ࠊ߆ߞߚ㧚߹ߣኈᤃߦ㘑ൻߒ㧘 Hydrocerussite Pb= Pb OH CO ?  ෸߮ߚ㧘߅߽ࠅ⴫㕙ߦߪ㧘⊕⦡‛⾰߇ઃ⌕ߒߡ߅ࠅ㧘㋦฽᦭

Cerussite ߆ࠄߥࠆ⊕⦡⊹⤑㊂ߪ㜞߆ߞߚ㧚߇↢ߓࠆߎߣ߇ႎ๔ߐࠇߡ޿ࠆ 㧚੹࿁ߪ㧘ห᭽ߦ㧘ᶏ᳓㧘ᐩ⾰෸߮߅߽ࠅߩ㋦቟ቯห૏૕Ყ  Pb/  Pb ࠍCerussite ߇ ᬌ಴ߐࠇߚ㧚ߒ߆ߒ㧘 Hydrocerussite ߪ ᬌ಴᳞߼ߚߣߎࠈ㧘ᶏ᳓⹜ᢱߪ㧘ᐩ⾰ࠃࠅࡂࠗࡠ࡯࠻บᐳߩ

ߐࠇߕ㧘 Laurionite ߇ ↢ᚑߒߡ޿ߚ߇㧘ߘߩ↢ᚑᯏ᭴╬߅߽ࠅߣㄭ޿୯ࠍ␜ߒߚߎߣ߆ࠄ㧘ᐩ⾰ߩᏎ߈਄ߍߢߪߦߟ޿ߡߪ㧘੹ᓟߩ⺖㗴ߢ޽ࠆ㧚ߥߊ㧘߅߽ࠅ߇ᳪᨴḮߢ޽ࠆߣ⠨߃ࠄࠇߚ㧚㧠ߚߣߎࠈ㧘ਥᚑಽߪ㧘Laurionite ෸߮ Crussite ߢ޽ߞߚ㧚߅߽ࠅ⴫㕙ߦઃ⌕ߒߚ⊕⦡☳૕ࠍ X ✢࿁᛬ᴺߢಽᨆߒ߹ߣ߼ᶏ᳓⹜ᢱߢ㧘ᐕ᦬ߦⅣႺၮḰ୯㧔 mg/l㧕ࠍ࿑:✢࿁᛬ࡄ࠲࡯ࡦએ਄ߩߎߣ߆ࠄ㧘ࡂࠗࡠ࡯࠻ណ᳓ེࠍᶏਛߦ౉ࠇߚ㓙㧘บᐳߩ㓗㑆߆ࠄᶏ᳓߇บᐳౝㇱߦ౉ߞߚߣ⠨߃ࠄࠇࠆ㧚ߘ ߎ ߢ 㧘 ߅ ߽ ࠅ ߩ ㋦ ⴫ 㕙 ߦ ↢ ᚑ ߒ ߚ Laurionite ෸ ߮ᢥ₂ ᐔᴡ༑⟤↵㧦Ꮏᬺឃ᳓⹜㛎ᣇᴺ

JIS K 㧘 pp-; ᧲੩㧦㧔⽷㧕ᣣᧄⷙᩰදળ㧘㧚

Crussite ࠍਥᚑಽߣߔࠆ⊕⦡☳૕߇㧘ࡂࠗࡠ࡯࠻ណ᳓ེ ะ੗ੱผ࡮ศ᳗ᷕ㧦ⅣႺ⑼ቇ㧘  㧘-

߆ࠄ⹜ᢱኈེߦᶏ᳓ࠍ⒖ߒᦧ߃ࠆߣ߈ߦ㧘บᐳㇱߦଚ౉ ␠࿅ᴺੱᣣᧄൻቇળ㧦ൻቇଢⷩၮ␆✬㧘Τ -㧧᧲੩ߒߚᶏ᳓ߣߣ߽ߦ⹜ᢱኈེߦ౉ߞߚߎߣߦࠃߞߡ㧘㋦ᳪ㧦ਣༀ㧘㧚 ጊፒᐽᑝࠄ㧦ජ⪲⋵ⅣႺ⎇ⓥ࠮ࡦ࠲࡯ᐕႎ╙৻ภ㧘ᨴࠍᒁ߈⿠ߎߒߚ߽ߩߣ⠨߃ࠄࠇߚ㧚-㧘㧚

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*Fukuoka Institute of Health and Environmental Sciences
Mukaizano  Dazaifu Fukuoka - Japan**Chikushi Health Welfare and Environment Office
Shirakibaru -- Onojo Fukuoka - Japan
Lead concentrations in sea water samples were over the environmental quality standard value (0.01mg/l). On examination, thesource of contamination was the Heyroth water sampler used by the contractor. The weight in the base of Heyroth water
sampler is composed of lead. The joint in base has a gap and sea water can enter easily. Therefore, Laurionite and Cerussite
are produced on the surface of the weight by long term weathering. Hence the reason for lead contamination may be that sea
water containing Laurionite and Cerussite from the base entered the bottle.

=Key words; Lead Isotope ratio Laurionite㧘CerussiteHeyroth water sampler ?