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PDF:691KB
ᢏ ⾡ ㄽ ᩥ
௓ㆤ᪋タ࡟࠾ࡅࡿởᰁᗘࡢᐇែᢕᥱ࡜ගゐ፹ᘓᮦ࡟ࡼࡿ㝖⳦ຠᯝࡢᐇド
Understanding of Actual Condition of Bacterial Contamination in Nursing Home for Elderly
and Demonstration of Bacteria Elimination by Photocatalyst Product
ᢏ⾡㛤Ⓨࢭࣥࢱ࣮
஦ᴗ໬㛤Ⓨᐊ
⇦ᒣ࡞ࡘࡳ
1DWVXPL<DNL\DPD
ᢏ⾡㛤Ⓨࢭࣥࢱ࣮
஦ᴗ໬㛤Ⓨᐊ
ಀ㛗 ᒣᮏΎྖ
.L\RVKL<DPDPRWR
ᢏ⾡㛤Ⓨࢭࣥࢱ࣮
஦ᴗ໬㛤Ⓨᐊ
ಀ㛗༤ኈ㸦ᕤᏛ㸧。㖟ᴿ
(XQ\RXQJ%DH
ᢏ⾡㛤Ⓨࢭࣥࢱ࣮
஦ᴗ໬㛤Ⓨᐊ
㧗␊ఞኸ㔛
.DRUL7DNDEDWDNH
ᢏ⾡㛤Ⓨࢭࣥࢱ࣮
஦ᴗ໬㛤Ⓨᐊ
ᐊ㛗 ᵽཱྀ཭ᙪ
7RPRKLNR+LJXFKL
せ ᪨
ᙜ♫ࡣࠊ㧗㏿ࣇ࣮࣒ࣞ⁐ᑕἲ࡟ࡼࡗ࡚ගゐ፹(TiO2)ࡢᡂ⭷ᢏ⾡ࢆ☜❧ࡋ࡚௨᮶ࠊග
ゐ፹ᢠ⳦ࢱ࢖ࣝࡸ✵Ẽί໬⿦⨨࡞࡝ᵝࠎ࡞ගゐ፹ᶵ⬟ࢆ௜୚ࡋࡓ〇ရࢆ㛤Ⓨࡋ࡚ࡁࡓࠋ
ቨᮦࡸᗋᮦ࡟⁐ᑕࡉࢀࡓගゐ፹ࢥ࣮ࢸ࢕ࣥࢢࡣẅ⳦ຠᯝࢆ♧ࡍࡇ࡜ࡀ▱ࡽࢀ࡚࠾ࡾࠊ
ච␿ຊࡢపୗࡋࡓᝈ⪅ࡸ฼⏝⪅ࡀከ࠸་⒪௓ㆤ㛵㐃᪋タ➼࡛ࡢගゐ፹〇ရࡢά⏝ࡀᮇ
ᚅࡉࢀ࡚࠸ࡿࠋࡑࡇ࡛ᮏሗ࡛ࡣࠊ௓ㆤ᪋タ࡟࠾ࡅࡿ⣽⳦㢮࡟ࡼࡿởᰁᗘࡢᐇែᢕᥱ࡜ࠊ
ᐇ⎔ቃ࡟࠾ࡅࡿගゐ፹ᢠ⳦ࢱ࢖ࣝ࡟ࡼࡿ㝖⳦ຠᯝࡢ᳨ドࢆ┠ⓗ࡟ࠊ✀ࠎࡢ⎔ቃ⾲㠃࡟
࠾ࡅࡿ௜╔⳦ᩘࡢ ᐃࢆ⾜ࡗࡓࠋ⤖ᯝࠊ௓ㆤ᪋タࢺ࢖ࣞᗋ㠃ࡢởᰁᗘࡀࠊᑐ㇟⩌ࡢ୰
࡛᭱ࡶ㧗࠸ࡇ࡜ࡀ☜ㄆ࡛ࡁࡓࠋࡉࡽ࡟ࠊ௓ㆤ᪋タࡢࢺ࢖ࣞᗋ㠃࠾ࡼࡧᏛᰯࡢಖ೺ᐊᗋ
㠃࡟࠾࠸࡚ࡶࠊගゐ፹ᢠ⳦ࢱ࢖ࣝࡢ᪋ᕤ๓ᚋࡢ௜╔⳦ᩘኚ໬࡟ᇶ࡙ࡃ⎔ቃホ౯ࢆ⾜࠺
ࡇ࡜࡛ගゐ፹ᢠ⳦ࢱ࢖ࣝ࡟ࡼࡿ㝖⳦ຠᯝࢆ☜ㄆ࡛ࡁࡓࠋ
Synopsis:
FUJICO has developed various photocatalystic(TiO2) products since we had established the
deposition technology of photocatalyst by a high-speed flame spraying method. It was well
known that the photocatalystic materials sprayed on wall and floor show a sterilization effect.
Therefore, the use of photocatalytic products are expected to be used in medical facilities and
nursing home for the many elderly patients and users having low immunity. In this study, we
measured the number of the adhesion bacteria in the environmental surface for the purposes
of understanding of the actual condition of bacterial contamination in nursing home for the
elderly and demonstration of bacteria elimination by the photocatalytic products.As a result,
we have confirmed that the pollution degree of toilet floor was identified as the largest. We
have also confirmed the sanitization effect with the photocatalytic antibacterial tile in the
toilet floor for nursing home and in the floor for school infirmary.
31
フジコー技報−tsukuru No.
✜⸒
⃻࿷‫ޔ‬ක≮੺⼔㑐ㅪᣉ⸳ߢߪ‫∛ޔ‬ේ૕ߩ᳓ᐔવ៝ࠍ
ᛥ೙ߔࠆߚ߼ߦ᭽‫ߥޘ‬ᗵᨴኻ╷߇ታ〣ߐࠇߡ޿ࠆ‫․ޕ‬
ߦ⿥㜞㦂ൻ␠ળࠍㄫ߃‫ޔ‬ක≮߇㜞ᐲൻߒߡ޿ࠆ੹ᣣ‫ޔ‬
౉㒮ᖚ⠪߿੺⼔ᣉ⸳೑↪⠪ߩ఺∉ૐਅ߇㗼⪺ߢ޽ࠅ‫ޔ‬
ᗵᨴ∝⊒∝ᛥ೙ߪ㕖Ᏹߦ㊀ⷐߢ޽ࠆ‫ޔߚ߹ޕ‬਎⇇ⷙᮨ
ߢߩ⮎೷⠴ᕈ⩶ߩ⬧ᑧߥߤ‫ޔ‬ᗵᨴኻ╷ߩᔀᐩ߇ᕆോߢ
޽ࠆ‫ߩߢ߹ࠇߎޔࠄ߇ߥߒ߆ߒޕ‬ᮡḰ੍㒐╷‫⊛⋡ޔ‬೎
ᗵᨴኻ╷‫ޔ‬ⅣႺᷡ᝹ߦߪ㒢⇇߇޽ࠆ‫ޕ‬
ᒰ␠ߪ‫ޔ‬㜞ㅦࡈ࡟࡯ࡓṁ኿ᴺߦࠃߞߡశ⸅ᇦ(TiO2)ⵍ
⤑ࠍᚑ⤑ߔࠆṁ኿ᛛⴚࠍ⏕┙ߒߡએ᧪‫ޔ‬ⓨ᳇ᷡᵺᯏ(໡
ຠฬ㧦MaSSC ࠢ࡝࡯ࡦ)߿᛫⩶࠲ࠗ࡞(໡ຠฬ㧦MaSSC
ࠪ࡯࡞࠼࠲ࠗ࡞)ߥߤ‫ޔ‬᭽‫ߥޘ‬శ⸅ᇦ⵾ຠࠍ໡ຠൻߒߡ
߈ߚ‫ޔߦ․ޕ‬ო᧚߿ᐥ᧚ߦṁ኿ߐࠇߚశ⸅ᇦߪ㒰⩶ല
ᨐࠍ␜ߔߎߣ߇⍮ࠄࠇߡ޿ࠆ‫ޕ‬
ᧄႎࠍ฽߻৻ㅪߩታ⸽⹜㛎ߢߪ‫ޔ‬ฦᣉ⸳ߦ߅ߌࠆቶ
ౝⅣႺߩᳪᨴᐲߩ⃻⁁ᛠីߣ⹏ଔᣇᴺߩ⏕┙
ታ⸽⹏
ଔߦᦨㆡߥᚻᴺߩㆬቯࠍⴕߞߡ߈ߚ‫⚿ߩߘޕ‬ᨐ‫ޔ‬ઃ⌕
⩶ߪ㜞㗫ᐲធ⸅ㇱ૏ߢ቟ቯᢙᬌ಴ߐࠇߚߚ߼‫ޔ‬ᣉ⸳ౝ
ߩᳪᨴᐲߩ⹏ଔᜰᮡߣߒߡ᦭ലߢ޽ࠆߎߣ߇᣿ࠄ߆ߦ
ߥߞߡ޿ࠆ‫ޕ‬
ᧄႎߢߪ╙৻Ბ㓏ߣߒߡ‫ޔ‬ᶖᲥ⮎ߣᷡ᝹ߦࠃࠆᓥ᧪
ߩᗵᨴኻ╷ࠍታᣉߒߡ޿ࠆ੺⼔ᣉ⸳ߩᳪᨴᐲߩታᘒࠍ
⺞ᩏߒߚ‫ౕޕ‬૕⊛ߦߪ‫⼔੺ޔ‬ᣉ⸳ౝߦ߅޿ߡ㜞ᳪᨴ߇
ᗐቯߐࠇࠆ㜞㗫ᐲធ⸅ㇱ૏ࠍਛᔃߣߒߚ▎ᚲߩ৻⥸⚦
⩶‫ޔ‬㤛⦡ࡉ࠼࠙⃿⩶‫ޔ‬ᄢ⣺⩶ߩઃ⌕⩶ಽᏓ⁁ᴫߩ⺞ᩏ
ࠍⴕߥ޿‫≮ޔ‬㙃ⅣႺਅߦ߅޿ߡ᛫⩶ᑪ᧚ࠍ૶↪ߒߚ㓙
ߦ᦭ലߦᯏ⢻ߔࠆน⢻ᕈߩ޽ࠆ▎ᚲࠍ․ቯߒߚ‫ޕ‬
╙ੑᲑ㓏ߣߒߡ੺⼔ᣉ⸳ߣ․೎㙃⼔ቇᩞౝߦశ⸅ᇦ
᛫⩶࠲ࠗ࡞ࠍᣉᎿߒ‫ޔ‬ฦᣉ⸳ߩᣉᎿ೨ᓟߩᳪᨴᐲࠍᲧ
セߔࠆߎߣߦࠃࠅ‫ޔ‬ታⅣႺߦ߅ߌࠆశ⸅ᇦ᛫⩶࠲ࠗ࡞
ߩ㒰⩶ലᨐࠍᬌ⸽ߒߚߩߢ‫⚿ߩߘޔ‬ᨐߦߟ޿ߡႎ๔ߔ
ࠆ‫ޕ‬
੺⼔ᣉ⸳ߩᳪᨴᐲߩታᘒᛠី
⋡⊛
ᓥ᧪ߩᶖᲥ⮎ߣᷡ᝹ߦࠃࠆᗵᨴኻ╷ࠍታᣉߒߡ޿ࠆ
੺⼔ᣉ⸳ߩᳪᨴᐲߩታᘒࠍ⺞ᩏߒߡ‫≮ޔ‬㙃ⅣႺਅߦ߅
޿ߡ‫ޔ‬᛫⩶ᑪ᧚ࠍ૶↪ߒߚ㓙ߦ᦭ലߦᯏ⢻ߔࠆน⢻ᕈ
߇޽ࠆ▎ᚲߩ․ቯࠍⴕ߁‫ޕ‬
ᣇᴺ
੺⼔ᣉ⸳ߦ߅ߌࠆ㜞㗫ᐲធ⸅ㇱ૏ࠍ฽߻ ▎ᚲߩઃ
⌕⩶ᢙࠍ 2 ᤨ㑆߅߈ߦ 11 ࿁ 22 ᤨ㑆᷹ቯߒ‫ᤨ⚻ޔ‬ᄌൻ
ߦ߅ߌࠆᳪᨴᐲߩ⺞ᩏࠍⴕߞߚ‫ޕ‬૬ߖߡ‫ޔ‬ᣉ⸳೑↪⠪
߅ࠃ߮੺⼔ᓥ੐⠪ߩⴕേಽᨆ߽ታᣉߒߚ‫ޕ‬
᷹ቯᣣᤨ
ᐔᚑ 26 ᐕ 5 ᦬ 20 ᣣ 1000㨪 5 ᦬ 21 ᣣ 800
2 ᤨ㑆Ფߦઃ⌕⩶ߩࠨࡦࡊ࡝ࡦࠣࠍታᣉ‫ޕ‬
᷹ቯ႐ᚲ߅ࠃ᷹߮ቯ▎ᚲ
੺⼔ᣉ⸳ 2F ࠣ࡞࡯ࡊࡎ࡯ࡓࡈࡠࠕ 1ଢེ೨ᣇߩ࠻ࠗ࡟ᐥ㕙‫ޔ‬2࠻ࠗ࡟ౝଢེᮮᚻߔࠅ‫ޔ‬
3࠻ࠗ࡟౉ญ࠼ࠕขᚻ‫ޔ‬4ᵞ㕙บߩฦㇱ૏ߩ⸘ 4 ▎ᚲ
ߩ᷹ቯࠍⴕߞߚ‫ޕ‬ฦ᷹ቯㇱ૏ߦ߅޿ߡԘ‫ޔ‬ԛߢ৻⥸⚦
⩶ԙ‫ޔ‬Ԝߢᄢ⣺⩶‫ޔ‬Ԛ‫ޔ‬ԝߢ㤛⦡ࡉ࠼࠙⃿⩶ߩណขࠍ
ⴕߞߚ‫
ޕ‬Fig.1
1) Toilet floor.
2) Handrail beside toilet seat.
3) Handle of toilet entrance.
4) Wash basin.
Fig.1 Photos showing measurement points.
᷹ቯᣇᴺ
ᩕ⎇ൻቇ⵾ߵߚࠎ࠴ࠚ࠶ࠢ 25 ࠍ↪޿‫ޔ‬
ၭ࿾⴫㕙ࠍ᷹
ቯኻ⽎‛ߦ᛼ߒઃߌࠆߎߣߢઃ⌕⩶ࠍណขߒ‫ޔ‬ᕡ᷷ቶ
ౝߢᚲⷐᤨ㑆ၭ㙃ߒ‫ޔ‬
ၭ࿾⴫㕙ߦ↢⢒ߒߚ⩶ᢙ
ࠦࡠ࠾
࡯ᢙࠍࠞ࠙ࡦ࠻ߒߚ‫ޕ‬ಽᨆኻ⽎ߪ৻⥸⚦⩶‫ޔ‬㤛⦡ࡉ࠼
࠙⃿⩶‫ޔ‬ᄢ⣺⩶ߣߒߚ‫ޕ‬ฦ⩶ߦኻߔࠆㆬᛯၭ࿾ߪ‫ޔ‬
CASO ၭ࿾
৻⥸⚦⩶‫ޔ‬ෆ㤛ടࡑࡦ࠾࠶࠻ၭ࿾
㤛⦡ࡉ
࠼࠙⃿⩶‫ޔ‬ES ࠦ࡝ࡑ࡯ࠢ
ᄢ⣺⩶ࠍ૶↪ߒߚ‫ޕ‬
⚿ᨐߣ⠨ኤ
ฦ▎ᚲߢߩ৻⥸⚦⩶ߩ⚿ᨐࠍ Fig.2 ߦ‫ޔ‬㤛⦡ࡉ࠼࠙
⃿⩶ߩ⚿ᨐࠍ Fig.3 ߦ‫ޔ‬ᄢ⣺⩶ߩ⚿ᨐࠍ Fig.4 ߦ␜ߔ‫ޕ‬
৻⥸⚦⩶ߪ‫⩶ޔ‬ᢙߩ⚻ᤨᄌൻ߆ࠄ᷹ቯ▎ᚲߦࠃࠅ‫ޔ‬
ߘߩჇᷫߦ㆑޿߇޽ࠆ⚿ᨐ߇␜ߐࠇߚ‫ޕ‬㜞㗫ᐲធ⸅ㇱ
૏ߢ޽ࠆ࠻ࠗ࡟ౝଢེᮮᚻߔࠅߩ৻⥸⚦⩶ᢙߪ‫ⴕޔ‬േ
ಽᨆߩ⚿ᨐ߆ࠄ‫ޔ‬೑↪⠪߇⸅ࠇࠆߎߣߢ৻ᤨ⊛ߦჇട
ߔࠆ⚿ᨐࠍ␜ߒߚ‫৻ޕ‬ᣇ‫࡟ࠗ࠻ޔ‬ᐥ㕙ߩ৻⥸⚦⩶ᢙߪ
ᶖᲥ෸߮ᷡ᝹ߦࠃߞߡ৻ᣤᄢ᏷ߦᷫዋߒ‫ޔ‬2330 ߩᶖ
Ქ෸߮ᷡ᝹߹ߢ⚻ᤨ⊛ߦჇടߔࠆ⚿ᨐߢ޽ߞߚ‫ޕ‬
߹ߚ‫ޔ‬
ᚻߔࠅ߿ᵞ㕙บߩԘߣԛߩ⩶ᢙߦ㆑޿߇⴫ࠇߡ޿ࠆὐ
߆ࠄ‫ޔ‬ห৻ㇱ૏ߢ߽ធ⸅㗫ᐲ߿ᚻᵞ޿╬ߩᳪᨴ᳓ߩ㘧
ᴜߩᓇ㗀ߢᳪᨴ▎ᚲߩ⩶ᢙߦ߫ࠄߟ߈߇޽ࠆߎߣ߇␜
ໂߐࠇߚ‫ޕ‬
㤛⦡ࡉ࠼࠙⃿⩶ߪ‫⩶⚦⥸৻ޔ‬ห᭽ߦ೑↪⠪ߣߩធ⸅
ߢ৻ᤨ⊛ߦჇടߔࠆ௑ะ߇␜ߐࠇߚ‫ޕ‬ᄢ⣺⩶ߪᐥ㕙એ
32
The
handrailbeside
beside
Handrail
a toilet seat ձ
Ԙ
ձ
The
handrailbeside
beside
Handrail
a toilet
toilet seat
seat մ
ԛ
մ
1) Toilet floor.
Handle of toilet
entrance Ԙ
ձ
Handrail beside
toilet seat ղ
ԙ
Handrail beside
toilet seat յ
Ԝ
2) Handrail beside a toilet
Wash basin Ԙ
ձ
մ
Wash basin ԛ
Handle of toilet
entrance ԛ
մ
3) Handle of toilet entrance.
4) Wash basin.
Fig.2 Colonies number of viable bacteria in per place.
Handrail beside
toilet seat Ԛ
ճ
Handrail beside
toilet seat ն
ԝ
1) Floor of toilet.
Handrail of toilet
entrance Ԛ
ճ
Handrail of toilet
ն
entrancen ԝ
2) Handrail beside a toilet seat.
1) Toilet floor.
Handle of toilet
entrance ԙ
ղ
Handle of toilet
entrance Ԝ
յ
3) Handle of toilet entrance.
2) Handrail beside a toilet seat.
Wash basin ղ
ԙ
Wash basin յ
Ԝ
4) Wash basin.
Fig.4 Colonies number of
in per place.
ࠇ‫ޔ‬ᳪᨴᐲߩ⹏ଔࠍⴕ߁▎ᚲߣߒߡㆡಾߢ޽ࠆߎߣ߇
␜ໂߐࠇߚ‫ޕ‬
੺⼔ᣉ⸳࠻ࠗ࡟ᐥ㕙
ߦ߅ߌࠆశ⸅ᇦᑪ᧚ߩ㒰
⩶ലᨐߩᬌ⸽
ᣇᴺ
శ⸅ᇦᑪ᧚ߣߒߡ Fig.5 ߦ␜ߔᒰ␠ MaSSC ࠪ࡯࡞࠼
࠲ࠗ࡞(MTS)ࠍ೨㗄ߩᳪᨴᐲߩታᘒᛠីߦ߅޿ߡ‫ޔ‬ᳪ
ᨴᐲ߇ᦨ߽㜞߆ߞߚ࠻ࠗ࡟ᐥ㕙ߦᣉᎿߒ‫ޔ‬ᣉᎿ೨ᓟฦ
Wash basin ճ
Ԛ
Wash basin ն
ԝ
Fig.5 FUJICO MaSSC Shield Tile (MTS).
3) Handle of toilet entrance.
4) Wash basin.
Fig.3 Colonies number of in per place
ᄖߢߪ߶ߣࠎߤᬌ಴ߐࠇߕ‫ޔ‬ᐥ㕙ߦ߅޿ߡ߽ઁߩ⩶ߦ
Ყߴߡ‫ޔ‬ᬌ಴ߐࠇߚ⩶ᢙߪዋߥ߆ߞߚ‫ޕ‬᷹ቯࠍⴕߞߚ
ฦㇱ૏ߦ߅޿ߡᄢ⣺⩶ߦᲧߴߡ㤛⦡ࡉ࠼࠙⃿⩶ߩ⩶ᢙ
߇ᄙߊ‫࡟ࠗ࠻ߦ․ޔ‬ᐥ㕙ߩᳪᨴ߇ㅴࠎߢ޿ࠆߎߣ߇⏕
⹺ߐࠇߚ‫ޕ‬
⚿⺰
੺⼔ᣉ⸳ߦ߅ߌࠆฦㇱ૏᷹ቯ▎ᚲߩઃ⌕⩶ᢙࠍ 2 ᤨ
㑆߅߈ߦ 22 ᤨ㑆᷹ቯߒ‫ޔ‬
⚻ᤨᄌൻߦ߅ߌࠆᳪᨴᐲߩ⺞
ᩏࠍⴕߞߚߣߎࠈ‫࡟ࠗ࠻ޔ‬ᐥ㕙ߩᳪᨴᐲ߇ᦨ߽㜞߆ߞ
ߚ‫ޕ‬ട߃ߡ‫ޔ‬ᐥ㕙ߩ⩶ᢙߪੱߩ಴౉ࠅߦࠃࠆᄌേ߇ዊ
ߐߊ‫ޔ‬ᷡ᝹ᓟ߆ࠄᰴߩᷡ᝹ᤨ߹ߢჇടߔࠆ௑ะ߇␜ߐ
33
10 ᣣ㑆ߢ⩶ᢙࠍ᷹ቯߔࠆߎߣߢ㒰⩶ലᨐߩᬌ⸽ࠍⴕ
ߞߚ‫ޕ‬
᷹ቯᣣᤨ
శ⸅ᇦᑪ᧚ᣉᎿ೨(⸘ 10 ᣣ㑆)
ᐔᚑ 26 ᐕ 7 ᦬ 29 ᣣ㨪8 ᦬ 1 ᣣ‫ޔ‬5 ᣣ㨪8 ᣣ‫ޔ‬11 ᣣ‫ޔ‬
12 ᣣ
శ⸅ᇦᑪ᧚ᣉᎿᓟ(⸘ 10 ᣣ㑆)
ᐔᚑ 26 ᐕ 12 ᦬ 1 ᣣ㨪5 ᣣ‫ޔ‬15 ᣣ㨪19 ᣣ
11:00 ߦᰴ੝Ⴎ⚛㉄ߢ࠻ࠗ࡟ᐥో૕ߩᶖᲥࠍⴕ޿‫ޔ‬
߅ࠃ
ߘ 5 ᤨ㑆ᓟߩ 16:00 ߦ᷹ቯࠍⴕߞߚ‫ޕ‬
᷹ቯ႐ᚲ
੺⼔ᣉ⸳ 3F ࠣ࡞࡯ࡊࡎ࡯ࡓ
࠻ࠗ࡟ᐥ(ଢེ೨ᣇ)ߩ⸘ 1 ▎ᚲߩ᷹ቯࠍⴕߞߚ‫(ޕ‬Fig.6)
フジコー技報−tsukuru No.
3.0
P<0.05
2.25㼼0.34
2.5
Log10[cfu/cm2]
1.40㼼0.71
2.0
1.5
1.0
0.5
1) Before construction 2) After construction
Fig.6 Photos showing measurement point in toilet floor.
0.0
before
Before construction
construction
after construction
construction
After
Fig.8 Average value of viable bacteria.
3.1.3 ᐃ᪉ἲ
ᰤ◊໬Ꮫ〇ࡩࡁྲྀࡾ࢟ࢵࢺࢆ⏝࠸ࠊࢺ࢖ࣞᗋ㠃
(10cm™10cm)ࢆࢫ࣡ࣈ࡛ᣔࡁྲྀࡾ௜╔⳦ࢆ᥇ྲྀᚋࠊ
ᇵ㣴ࡋ⳦ᩘࢆ࢝࢘ࣥࢺࡋࡓࠋศᯒᑐ㇟ࡣ୍⯡⣽⳦ࠊ
኱⭠⳦ࠊ㯤Ⰽࣈࢻ࢘⌫⳦࡜ࡋࡓࠋྛ⳦ᩘࢆ ᐃࡍࡿ
㑅ᢥᇵᆅ࡜ࡋ࡚ࠊ୍⯡⣽⳦ࡣ CASO ᐮኳᇵᆅ(࣓ࣝ
ࢡ〇)ࠊ኱⭠⳦ࡣ XM-G ᐮኳᇵᆅ(᪥Ỉ〇)ࠊ㯤Ⰽࣈࢻ
࢘⌫⳦ࡣ༸㯤ຍ࣐ࣥࢽࢵࢺᇵᆅ(࣓ࣝࢡ〇)ࢆ౑⏝ࡋ
ࡓࠋ๓㡯ࡢㄪᰝࡼࡾࠊྠ୍㒊఩࡟࠾࠸࡚ࡶ ᐃ⟠ᡤ
࡟ࡼࡗ࡚ởᰁᗘࡢ㐪࠸ࡀ♧၀ࡉࢀࡓࡓࡵࠊᮏ㡯࡛ࡣ
ࡇࡢࣂ࢖࢔ࢫࢆᢚ࠼ࡿࡓࡵ࡟ྠ୍⟠ᡤ࠿ࡽศ㞳ᇵ
㣴ྍ⬟࡞ࢫ࣡ࣈἲ࡟ษࡾ᭰࠼࡚ ᐃࢆ⾜ࡗࡓࠋ
3.1.4 ⤫ィᏛⓗホ౯
ගゐ፹ᢠ⳦ࢱ࢖ࣝࡢ㝖⳦ຠᯝࡢ᭷ຠᛶ࡟ࡘ࠸࡚
ࡣࠊ᪋ᕤ๓ᚋࡢ⳦ᩘࢆ t ᳨ᐃ࡟࡚ẚ㍑ࡍࡿࡇ࡜࡟ࡼ
ࡾホ౯ࢆ⾜ࡗࡓࠋ
3.2 ⤖ᯝ࡜⪃ᐹ
Fig.7 ࡟ගゐ፹ᘓᮦ᪋ᕤ๓ᚋ࡟࠾ࡅࡿ୍⯡⣽⳦ᩘࡢ
⤖ᯝࢆ♧ࡍࠋ Fig.8 ࡟ගゐ፹ᘓᮦ᪋ᕤ๓ᚋ࡟࠾ࡅࡿ୍
⯡⣽⳦ᩘࡢᖹᆒ್࠾ࡼࡧ t ᳨ᐃࡢ⤖ᯝࢆ♧ࡍࠋ
Fig.8 ࡼࡾࠊගゐ፹ᘓᮦ᪋ᕤᚋࡢ୍⯡⣽⳦ᩘ(10 ᪥㛫
ࡢᖹᆒ್)ࡣ᪋ᕤ๓࡜ẚ㍑ࡋࠊ᭷ព࡟ῶᑡࡋ࡚࠸ࡿࡇ࡜
ࡀ♧ࡉࢀࡓ(p<0.05)ࠋගゐ፹ᘓᮦ᪋ᕤ๓ࡢ ᐃ᫬ᮇࡀኟ
ᮇࠊ᪋ᕤᚋࡢ ᐃ᫬ᮇࡀ෤ᮇ࡛࠶ࡿࡇ࡜࠿ࡽ⳦ࡢ⦾Ṫ
࡟ᙳ㡪ࡋ࡚࠸ࡿࡇ࡜ࡀᠱᛕࡉࢀࡿࡶࡢࡢࠊ෤ᮇ࡟࠾ࡅ
ࡿࢺ࢖ࣞᐊෆࡣ✵ㄪࡀຠ࠸࡚࠸ࡓࡓࡵࠊᖹᆒᐊ ࡀ
22Υ࡛࠶ࡗࡓࠋࡇࡢࡇ࡜࠿ࡽ⳦ࡢ⦾Ṫ࡟ࡣᙳ㡪ࡀ࡞࠿
ࡗࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋ
௨ୖࡢࡇ࡜࠿ࡽࠊගゐ፹ᘓᮦࡣ⎔ቃ⳦࡟ᑐࡋ࡚⥲⳦
ᩘࢆపῶࡍࡿຠᯝࡀ࠶ࡿࡇ࡜ࡀ♧ࡉࢀࡓࠋ
Photocatalyst tile
before construction
Photocatalyst tile
after construction
Fig.9 Colonies number of Staphylococcus aureus.
Photocatalyst tile before construction
Photocatalyst tile after construction
Photocatalyst tile
before construction
Photocatalyst tile
after construction
Fig.7 Colonies number of viable bacteria.
Fig.10 Colonies number of Escherichia coli.
34
Fig.9‫ޔ‬Fig.10 ߦశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߦ߅ߌࠆ㤛⦡ࡉ
࠼࠙⃿⩶ᢙ‫ޔ‬ᄢ⣺⩶ᢙߩ⚿ᨐࠍ␜ߔ‫ޕ‬
Fig.9 ࠃࠅ‫ޔ‬శ⸅ᇦᑪ᧚ᣉᎿᓟߦ㤛⦡ࡉ࠼࠙⃿⩶ߩᳪ
ᨴ߇⪺ߒ޿ᣣ߇ 1 ᣣ (12 ᦬ 2 ᣣ)⃻ࠇߚ‫ޕ‬ᒰ␠ߩ᛫⩶࠲
ࠗ࡞ߪశ⸅ᇦߦ᛫⩶㊄ዻࠍวࠊߖߚࡂࠗࡉ࡝࠶࠼శ⸅
ᇦߢ޽ࠆߚ߼‫ޔ‬ṁ಴ߒߚ㊄ዻࠗࠝࡦ߇㤛⦡ࡉ࠼࠙⃿⩶
ߦኻߒߡᲕ⩶ജ߇ૐߊ‫߼ߚߩߘޔ‬හᤨᔕ╵ᕈ߇ૐ޿ߎ
ߣ߇␜ໂߐࠇ‫ޔ‬㤛⦡ࡉ࠼࠙⃿⩶ߪ଻⩶⠪߇᷹ቯኻ⽎ߦ
⸅ࠇߚߎߣߢ৻ᤨ⊛ߦჇടߒߚߣᗐቯߐࠇࠆ‫੹ޕ‬࿁߽
ߎߩࠤ࡯ࠬ߇⠨߃ࠄࠇࠆߚ߼‫੹ޔ‬ᓟ߽ᬌ⸛߇ᔅⷐߢ޽
ࠆ‫ޕ‬Fig.10 ࠃࠅ‫ޔ‬ᄢ⣺⩶ߪశ⸅ᇦᑪ᧚ᣉᎿ೨ߢ 4 ᣣ㑆
ಽ㔌ߐࠇߚߩߦኻߒ‫ޔ‬ᣉᎿᓟߪಽ㔌ߐࠇߕ‫ޔ‬ᄢ⣺⩶ߦ
ኻߒߡఝࠇߚ㒰⩶ലᨐࠍ␜ߒߚ‫ޕ‬㤛⦡ࡉ࠼࠙⃿⩶߅ࠃ
߮ᄢ⣺⩶ߦ߅ߌࠆ t ᬌቯ߽ⴕߞߚ߇‫ޔ‬ᑪ᧚ᣉᎿ೨ᓟߦ
߅޿ߡ౒ߦ᦭ᗧᏅߪᓧࠄࠇߥ߆ߞߚ‫(ޕ‬㤛⦡ࡉ࠼࠙⃿
⩶㧦= 0.756㧘ᄢ⣺⩶㧦= 0.175)ߘߩℂ↱ߣߒߡ‫ޔ‬㤛
⦡ࡉ࠼࠙⃿⩶ߦߟ޿ߡߪ12᦬2ᣣߦᄖࠇ୯߇ᬌ಴ߐߖ
ߚߚ߼ߣ⠨߃ࠄࠇࠆ‫ߚ߹ޕ‬ᄢ⣺⩶ߦߟ޿ߡߪᣉᎿ೨ߦ
ᬌ಴ߐࠇߚ⩶ᢙ߇ዋߥ߆ߞߚߎߣ߇ⷐ࿃ߣߒߡ⠨߃ࠄ
ࠇࠆ‫ޕ‬
⚿⺰
೨㗄ߩ⺞ᩏߦ߅޿ߡ੺⼔ᣉ⸳ߢᦨ߽ᳪᨴᐲ߇㜞߆
ߞߚ࠻ࠗ࡟ᐥ㕙ߦశ⸅ᇦᑪ᧚(MTS)ࠍᣉᎿߒߚߣߎࠈ‫ޔ‬
శ⸅ᇦᑪ᧚ᣉᎿᓟߩ৻⥸⚦⩶ᢙ
10 ᣣ㑆ߩᐔဋ୯ߪ
ᣉᎿ೨ߣᲧセߒ‫᦭ޔ‬ᗧߦᷫዋߒߡ޿ࠆߎߣ߇␜ߐࠇߚ
(<0.05)‫ޕ‬శ⸅ᇦᑪ᧚ߪ‫ޔ‬ⅣႺ⩶ߦኻߒߡ㒰⩶ലᨐ߇޽
ࠆߎߣ߇␜ߐࠇߚ‫ޕ‬
․೎ᡰេቇᩞ଻ஜቶߦ߅ߌࠆశ⸅ᇦᑪ᧚ߩ㒰⩶
ലᨐߩᬌ⸽
ᣇᴺ
ᒰ␠ MaSSC ࠪ࡯࡞࠼࠲ࠗ࡞(MTS)ࠍ․೎ᡰេቇᩞ
ߩ଻ஜቶᐥ㕙ߦᣉᎿߒ‫ޔ‬ᣉᎿ೨ᓟฦ 3 ᣣ㑆ߢ⩶ᢙࠍ᷹
ቯߒ‫ޔ‬㒰⩶ലᨐߩታ⸽ࠍⴕߞߚ‫ޕ‬
᷹ቯᣣᤨ
శ⸅ᇦᑪ᧚ᣉᎿ೨(⸘ 3 ᣣ㑆)
ᐔᚑ 27 ᐕ 3 ᦬ 20 ᣣ‫ޔ‬22 ᣣ‫ޔ‬23 ᣣ
శ⸅ᇦᑪ᧚ᣉᎿᓟ(⸘ 3 ᣣ㑆)
ᐔᚑ 27 ᐕ 4 ᦬ 13 ᣣ㨪15 ᣣ
᷹ቯ႐ᚲ
ർ਻ᎺᏒ┙౎ᐈ⷏․೎ᡰេቇᩞ
(A)ᑈਅ౉ญᅏ‫(ޔ‬B)ᑈਅ౉ญᚻ೨‫(ޔ‬1)଻ஜቶౝ౉ญᅏ‫ޔ‬
(2)଻ஜቶౝ౉ญᚻ೨‫(ޔ‬3)ਛᄩ‫(ޔ‬4)ᵞ㕙บਅߦ߅ߌࠆᐥ
㕙ߩ⸘ 6 ▎ᚲߩ᷹ቯࠍⴕߞߚ‫(ޕ‬A)߅ࠃ߮(B)ߪฦ⹜㛎
ᦼ㑆ߦ߅ߌࠆᳪᨴ⁁ᴫᛠីߩࠦࡦ࠻ࡠ࡯࡞ߣߒߡ᷹ቯ
ߒߚ‫(ޕ‬Fig.11)
᷹ቯᣇᴺ
ᩕ⎇ൻቇ⵾߰߈ขࠅࠠ࠶࠻ࠍ↪޿‫଻ޔ‬ஜቶᐥ㕙
(10cm˜10cm)ࠍࠬࡢࡉߢ᜞߈ขࠅઃ⌕⩶ࠍណขߒߚ
Fig.11 Ground plan showing measurement points.
ᓟ‫ޔ‬ၭ㙃ߒ⩶ᢙࠍࠞ࠙ࡦ࠻ߒߚ‫ޕ‬ಽᨆኻ⽎ߪ৻⥸⚦⩶
ߣߒ‫ޔ‬ၭ㙃ߦߪ CASO ኙᄤၭ࿾ࠍ૶↪ߒߚ‫ޕ‬
⛔⸘ቇ⊛⹏ଔ
శ⸅ᇦ᛫⩶࠲ࠗ࡞ߩ㒰⩶ലᨐߩ᦭ലᕈߦߟ޿ߡߪ‫ޔ‬
ᣉᎿ೨ᓟߩ⩶ᢙࠍ t ᬌቯߦߡᲧセߔࠆߎߣߦࠃࠅ⹏ଔ
ࠍⴕߞߚ‫ޕ‬
⚿ᨐߣ⠨ኤ
Fig.12 ߦశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߦ߅ߌࠆ৻⥸⚦⩶ᢙߩ
⚿ᨐࠍ␜ߔ‫ޕ‬Fig.13 ߦ(A)߅ࠃ߮(B)ߩశ⸅ᇦᑪ᧚ᣉᎿ
೨ᓟߦ߅ߌࠆ৻⥸⚦⩶ᢙߩᐔဋ୯߅ࠃ߮ t ᬌቯߩ⚿ᨐ
ࠍ␜ߔ‫ޕ‬Fig.14 ߦ(1)㨪(4)ߩశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߦ߅ߌ
ࠆ৻⥸⚦⩶ᢙߩᐔဋ୯ࠍ␜ߔ‫ޕ‬
Fig.12 ࠃࠅ‫ᦼోޔ‬㑆ߦ߅޿ߡ৻⥸⚦⩶ᢙߪ߶߷ 30
cfu/10cm2 ߢ޽ࠅ‫଻ޔ‬ஜቶߩᐥ㕙ߩᳪᨴᐲߪో૕⊛ߦ
シᐲߥᳪᨴߢ޽ߞߚ‫ ޕ‬Fig.13 ࠃࠅࠦࡦ࠻ࡠ࡯࡞ߦ߅ߌ
ࠆశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߩ৻⥸⚦⩶ᢙߦ᦭ᗧᏅ߇ߥ޿ߎ
ߣ߇␜ߐࠇߚ(㧩0.597)‫৻ޕ‬ᣇ‫ޔ‬Fig.14 ࠃࠅశ⸅ᇦᑪ᧚
ᣉᎿࠍⴕߞߚ▎ᚲߢߩ৻⥸⚦⩶ᢙߩᐔဋ୯ߪ‫᦭ޔ‬ᗧߦ
ᷫዋߒߡ߅ࠅ(<0.05)‫ޔ‬శ⸅ᇦ࠲ࠗ࡞ߦࠃࠆ㒰⩶ലᨐ߇
⏕⹺ߢ߈ߚ‫ޕ‬
Fig.15 ߦ⩶ߩ❥ᱺߒ߿ߔ޿᳓๟ࠅㇱಽߩᣉᎿ೨ᓟߩ
ᐔဋ୯ࠍ␜ߔ‫ߦ․ޕ‬᳓๟ࠅߩ⩶߇❥ᱺߒ߿ߔߊߥࠆ႐
ᚲߦ߅޿ߡߪ‫࡞ࡊࡦࠨޔ‬ᢙࠍዋߥߊߒߚ᧦ઙߢ߽‫৻ޔ‬
⥸⚦⩶ᢙߪᣉᎿᓟߦ᦭ᗧߦᷫዋߒߡ߅ࠅ‫ޔ‬శ⸅ᇦ࠲ࠗ
࡞ߦࠃࠆ㒰⩶ലᨐࠍ⏕⹺ߢ߈ߚ‫ޕ‬
Before
After
Fig.12 Colonies number of viable bacteria.
35
フジコー技報−tsukuru No.
2.0
0.84㫧0.78
Log10[cfu/10cm2]
1.5
1.0
0.66㫧0.16
0.5
0.0
before
construction
Before
construction
afterconstruction
construction
After
Fig.13 Average value of viable bacteria
in school infirmary (A),(B).(n=6)
2.0
⚿⺰
․೎ᡰេቇᩞ଻ஜቶᐥ㕙ߦశ⸅ᇦᑪ᧚(MTS)ࠍᣉᎿ
ߒ‫ޔ‬ᑪ᧚ᣉᎿ೨ᓟߦ߅ߌࠆઃ⌕⩶ᢙࠍฦ 3 ᣣ㑆᷹ቯߒ
ߚ‫ࠆߌ߅ߦ࡞࡯ࡠ࠻ࡦࠦޕ‬శ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߩ৻⥸
⚦⩶ᢙߦ᦭ᗧߥᄌേߪߥ߆ߞߚ߇‫ޔ‬శ⸅ᇦᑪ᧚ᣉᎿࠍ
ⴕߞߚ▎ᚲߢߩ৻⥸⚦⩶ᢙߩᐔဋ୯ߪ‫ޔ‬ᣉᎿᓟߦ᦭ᗧ
ߦᷫዋߒߡ߅ࠅ‫ޔ‬శ⸅ᇦ࠲ࠗ࡞ߦࠃࠆ㒰⩶ലᨐࠍ⏕⹺
ߔࠆߎߣ߇ߢ߈ߚ‫ޕ‬
⚿⺆
ᧄႎߢߪ੺⼔ᣉ⸳ߩᳪᨴᐲߩታᘒᛠីࠍ⋡⊛ߣߒ
ߡ‫ߦ⊛ᤨ⚻ޔ‬ઃ⌕⩶ᢙߩ᷹ቯࠍⴕߞߚ‫⼔੺ޕ‬ᣉ⸳ߩ⺞
ᩏ߆ࠄ‫࡟ࠗ࠻ޔ‬ᐥ㕙ߩᳪᨴᐲ߇ᦨ߽㜞޿௑ะࠍ␜ߔߎ
ߣࠍ⏕⹺ߒߚ‫ޕ‬ട߃ߡ‫⩶ޔ‬ᢙߩ᜼േ߆ࠄᳪᨴᐲߩ⹏ଔ
▎ᚲߣߒߡ‫੹ޔ‬࿁ߩ৻ㅪߩ⹜㛎ߦ߅޿ߡߪᦨㆡߢ޽ࠆ
ߎߣ߇␜ໂߐࠇߚ‫⼔੺ߩߘޔߦࠄߐޕ‬ᣉ⸳࠻ࠗ࡟߅ࠃ
߮․೎ᡰេቇᩞ଻ஜቶߩᐥ㕙ߦశ⸅ᇦ࠲ࠗ࡞(MTS)ࠍ
ᣉᎿߒ‫ޔ‬ઃ⌕⩶ᢙࠍ᷹ቯߒߚ‫ޕ‬శ⸅ᇦ࠲ࠗ࡞ࠍᣉᎿߔ
ࠆߎߣߢ᦭ᗧߦ⩶ᢙ߇ᷫዋߒߡ߅ࠅ‫ޔ‬ታⓨ㑆ߦ߅ߌࠆ
శ⸅ᇦ᛫⩶ᑪ᧚ߩ㒰⩶ലᨐ߇⏕⹺ߢ߈ߚ‫ޕ‬
Log10[cfu/10cm2]
1.5
1.02㫧0.30
0.59㫧0.46
1.0
0.5
0.0
before
construction
Before
construction
after
construction
After
construction
Fig.14 Average value of viable bacteria
in school infirmary (1) ~ (4).(n=12)
2.0
1.27㫧0.08
Log10[cfu/10cm2]
1.5
0.58㫧0.17
1.0
0.5
0.0
before
construction
Before
construction
afterconstruction
construction
After
⻢ㄉ
ᧄ⎇ⓥߪർ਻ᎺᏒౝߩ∛㒮㑐ଥ⠪ߣ౒หߢㅴ߼ߡ
߅ࠅ‫↥ޔ‬ᬺක⑼ᄢቇ∛㒮㋈ᧁసౖഥᢎ‫ޔ‬Ꮢ┙౎ᐈ∛
㒮દ⮮㊀ᒾ೽㒮㐳‫ޔ‬ਛᎹ␭ሶ⋴⼔ㇱᗵᨴ▤ℂᜂᒰ
ଥ㐳ߩߏഥ⸒෸߮ߏදജߦᗵ⻢޿ߚߒ߹ߔ‫⺞ޔߚ߹ޕ‬
ᩏߦߏදജ޿ߚߛ޿ߚฦᣉ⸳߅ࠃ߮ർ਻ᎺᏒ┙౎ᐈ
⷏․೎ᡰេቇᩞ㑐ଥ⠪ߩᣇ‫ߦޘ‬ᗵ⻢޿ߚߒ߹ߔ‫ޕ‬
ෳ⠨ᢥ₂
1) ᮘญ෹ᒾ㧘ේ⾐ਭੱ㧘ศ᳗ብ㧘᪢↰㓁ᐔ㧘ጊፒஜ
ਯ㧦ࡈࠫࠦ࡯ᛛႎ 17㧔2009㧕49
2) ᮘญ෹ᒾ㧘ේ⾐ਭੱ㧘ศ᳗ብ㧘᪢↰㓁ᐔ㧦ࡈࠫࠦ
࡯ᛛႎ 16㧔2008㧕54
3) ᮘญ෹ᒾේ⾐ਭੱ㧦ࡈࠫࠦ࡯ᛛႎ 15㧔2007㧕68
4) ᮘญ෹ᒾฎ↰ඳᤘ㊁᧛ᄢᔒᦶ㧦ࡈࠫࠦ࡯ᛛᴺ
14 (2006) 37
5) ᮘญ෹ᒾ㧘የፒ㦖ብ㧦ࡈࠫࠦ࡯ᛛႎ 13 (2005) 43
6) የፒ㦖ብ㧦ࡈࠫࠦ࡯ᛛႎ 12㧔2004㧕48
7) ⩵ᳰ㕏ᔒ㧚᛫⩶ᕈ㊄ዻߩ⃻⁁ߣ⺖㗴㧦߹ߡࠅ޽ ╙
39 Ꮞ ╙ 2 ภ(2000),p148
8) L.T.CATE:J.Appl.Bact., 28, p221-223(1965)
Fig.15 Average value of viable bacteria
in school infirmary (4).(n=3)
36
.
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