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ᢏ ⾡ ㄽ ᩥ ㆤタ࠾ࡅࡿởᰁᗘࡢᐇែᢕᥱගゐ፹ᘓᮦࡼࡿ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 ᵽཱྀᙪ 7RPRKLNR+LJXFKL せ ᪨ ᙜ♫ࡣࠊ㧗㏿ࣇ࣮࣒ࣞ⁐ᑕἲࡼࡗ࡚ගゐ፹(TiO2)ࡢᡂ⭷ᢏ⾡ࢆ☜❧ࡋ࡚௨᮶ࠊග ゐ፹ᢠ⳦ࢱࣝࡸ✵Ẽί⨨࡞ᵝࠎ࡞ගゐ፹ᶵ⬟ࢆࡋࡓ〇ရࢆ㛤Ⓨࡋ࡚ࡁࡓࠋ ቨᮦࡸᗋᮦ⁐ᑕࡉࢀࡓගゐ፹ࢥ࣮ࢸࣥࢢࡣẅ⳦ຠᯝࢆ♧ࡍࡇࡀ▱ࡽࢀ࡚࠾ࡾࠊ චຊࡢపୗࡋࡓᝈ⪅ࡸ⏝⪅ࡀከ࠸་⒪ㆤ㛵㐃タ➼࡛ࡢගゐ፹〇ရࡢά⏝ࡀᮇ ᚅࡉࢀ࡚࠸ࡿࠋࡑࡇ࡛ᮏሗ࡛ࡣࠊㆤタ࠾ࡅࡿ⣽⳦㢮ࡼࡿởᰁᗘࡢᐇែᢕᥱࠊ ᐇ⎔ቃ࠾ࡅࡿගゐ፹ᢠ⳦ࢱࣝࡼࡿ㝖⳦ຠᯝࡢ᳨ドࢆ┠ⓗࠊ✀ࠎࡢ⎔ቃ⾲㠃 ࠾ࡅࡿ╔⳦ᩘࡢ ᐃࢆ⾜ࡗࡓࠋ⤖ᯝࠊㆤタࢺࣞᗋ㠃ࡢởᰁᗘࡀࠊᑐ㇟⩌ࡢ୰ ࡛᭱ࡶ㧗࠸ࡇࡀ☜ㄆ࡛ࡁࡓࠋࡉࡽࠊㆤタࡢࢺࣞᗋ㠃࠾ࡼࡧᏛᰯࡢಖᐊᗋ 㠃࠾࠸࡚ࡶࠊගゐ፹ᢠ⳦ࢱࣝࡢᕤ๓ᚋࡢ╔⳦ᩘኚᇶ࡙ࡃ⎔ቃホ౯ࢆ⾜࠺ ࡇ࡛ගゐ፹ᢠ⳦ࢱࣝࡼࡿ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∛ޔේߩ᳓ᐔવ៝ࠍ ᛥߔࠆߚߦ᭽ߥޘᗵᨴኻ╷߇ታ〣ߐࠇߡࠆ․ޕ ߦ㜞㦂ൻ␠ળࠍㄫ߃ޔක≮߇㜞ᐲൻߒߡࠆᣣޔ 㒮ᖚ⠪߿⼔ᣉ⸳↪⠪ߩ∉ૐਅ߇㗼⪺ߢࠅޔ ᗵᨴ∝⊒∝ᛥߪ㕖Ᏹߦ㊀ⷐߢࠆޔߚ߹ޕ⇇ⷙᮨ ߢߩ⮎⠴ᕈ⩶ߩ⬧ᑧߥߤޔᗵᨴኻ╷ߩᔀᐩ߇ᕆോߢ ࠆߩߢ߹ࠇߎޔࠄ߇ߥߒ߆ߒޕᮡḰ੍㒐╷⊛⋡ޔ ᗵᨴኻ╷ޔⅣႺᷡߦߪ㒢⇇߇ࠆޕ ᒰ␠ߪޔ㜞ㅦࡈࡓṁᴺߦࠃߞߡశ⸅ᇦ(TiO2)ⵍ ⤑ࠍᚑ⤑ߔࠆṁᛛⴚࠍ⏕┙ߒߡએ᧪ޔⓨ᳇ᷡᵺᯏ( ຠฬ㧦MaSSC ࠢࡦ)߿᛫⩶࠲ࠗ࡞(ຠฬ㧦MaSSC ࠪ࡞࠼࠲ࠗ࡞)ߥߤޔ᭽ߥޘశ⸅ᇦຠࠍຠൻߒߡ ߈ߚޔߦ․ޕო᧚߿ᐥ᧚ߦṁߐࠇߚశ⸅ᇦߪ㒰⩶ല ᨐࠍ␜ߔߎߣ߇⍮ࠄࠇߡࠆޕ ᧄႎࠍ৻ㅪߩታ⸽⹜㛎ߢߪޔฦᣉ⸳ߦ߅ߌࠆቶ ౝⅣႺߩᳪᨴᐲߩ⁁ᛠីߣ⹏ଔᣇᴺߩ⏕┙ ታ⸽⹏ ଔߦᦨㆡߥᚻᴺߩㆬቯࠍⴕߞߡ߈ߚ⚿ߩߘޕᨐޔઃ⌕ ⩶ߪ㜞㗫ᐲធ⸅ㇱߢቯᢙᬌߐࠇߚߚޔᣉ⸳ౝ ߩᳪᨴᐲߩ⹏ଔᜰᮡߣߒߡലߢࠆߎߣ߇ࠄ߆ߦ ߥߞߡࠆޕ ᧄႎߢߪ╙৻Ბ㓏ߣߒߡޔᶖᲥ⮎ߣᷡߦࠃࠆᓥ᧪ ߩᗵᨴኻ╷ࠍታᣉߒߡࠆ⼔ᣉ⸳ߩᳪᨴᐲߩታᘒࠍ ⺞ᩏߒߚౕޕ⊛ߦߪ⼔ޔᣉ⸳ౝߦ߅ߡ㜞ᳪᨴ߇ ᗐቯߐࠇࠆ㜞㗫ᐲធ⸅ㇱࠍਛᔃߣߒߚ▎ᚲߩ৻⥸⚦ ⩶ޔ㤛⦡ࡉ࠼࠙⩶ޔᄢ⣺⩶ߩઃ⌕⩶ಽᏓ⁁ᴫߩ⺞ᩏ ࠍⴕߥ≮ޔ㙃ⅣႺਅߦ߅ߡ᛫⩶ᑪ᧚ࠍ↪ߒߚ㓙 ߦലߦᯏ⢻ߔࠆน⢻ᕈߩࠆ▎ᚲࠍ․ቯߒߚޕ ╙ੑᲑ㓏ߣߒߡ⼔ᣉ⸳ߣ․㙃⼔ቇᩞౝߦశ⸅ᇦ ᛫⩶࠲ࠗ࡞ࠍᣉᎿߒޔฦᣉ⸳ߩᣉᎿ೨ᓟߩᳪᨴᐲࠍᲧ セߔࠆߎߣߦࠃࠅޔታⅣႺߦ߅ߌࠆశ⸅ᇦ᛫⩶࠲ࠗ࡞ ߩ㒰⩶ലᨐࠍᬌ⸽ߒߚߩߢ⚿ߩߘޔᨐߦߟߡႎ๔ߔ ࠆޕ ⼔ᣉ⸳ߩᳪᨴᐲߩታᘒᛠី ⋡⊛ ᓥ᧪ߩᶖᲥ⮎ߣᷡߦࠃࠆᗵᨴኻ╷ࠍታᣉߒߡࠆ ⼔ᣉ⸳ߩᳪᨴᐲߩታᘒࠍ⺞ᩏߒߡ≮ޔ㙃ⅣႺਅߦ߅ ߡޔ᛫⩶ᑪ᧚ࠍ↪ߒߚ㓙ߦലߦᯏ⢻ߔࠆน⢻ᕈ ߇ࠆ▎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⌕⩶ߩࠨࡦࡊࡦࠣࠍታᣉޕ ᷹ቯ႐ᚲ߅ࠃ᷹߮ቯ▎ᚲ ⼔ᣉ⸳ 2F ࠣ࡞ࡊࡎࡓࡈࡠࠕ 1ଢེ೨ᣇߩ࠻ࠗᐥ㕙ޔ2࠻ࠗౝଢེᮮᚻߔࠅޔ 3࠻ࠗญ࠼ࠕขᚻޔ4ᵞ㕙บߩฦㇱߩ⸘ 4 ▎ᚲ ߩ᷹ቯࠍⴕߞߚޕฦ᷹ቯㇱߦ߅ߡԘޔԛߢ৻⥸⚦ ⩶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 ᩕ⎇ൻቇߵߚࠎ࠴ࠚ࠶ࠢ 25 ࠍ↪ޔ ၭ㕙ࠍ᷹ ቯኻ⽎‛ߦߒઃߌࠆߎߣߢઃ⌕⩶ࠍណขߒޔᕡ᷷ቶ ౝߢᚲⷐᤨ㑆ၭ㙃ߒޔ ၭ㕙ߦ↢⢒ߒߚ⩶ᢙ ࠦࡠ࠾ ᢙࠍࠞ࠙ࡦ࠻ߒߚޕಽᨆኻ⽎ߪ৻⥸⚦⩶ޔ㤛⦡ࡉ࠼ ࠙⩶ޔᄢ⣺⩶ߣߒߚޕฦ⩶ߦኻߔࠆㆬᛯၭߪޔ CASO ၭ ৻⥸⚦⩶ޔෆ㤛ടࡑࡦ࠾࠶࠻ၭ 㤛⦡ࡉ ࠼࠙⩶ޔES ࠦࡑࠢ 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㆑߇ࠆ⚿ᨐ߇␜ߐࠇߚޕ㜞㗫ᐲធ⸅ㇱ ߢࠆ࠻ࠗౝଢེᮮᚻߔࠅߩ৻⥸⚦⩶ᢙߪⴕޔേ ಽᨆߩ⚿ᨐ߆ࠄޔ↪⠪߇⸅ࠇࠆߎߣߢ৻ᤨ⊛ߦჇട ߔࠆ⚿ᨐࠍ␜ߒߚ৻ޕᣇࠗ࠻ޔᐥ㕙ߩ৻⥸⚦⩶ᢙߪ ᶖᲥ߮ᷡߦࠃߞߡ৻ᣤᄢߦᷫዋߒޔ2330 ߩᶖ Ქ߮ᷡ߹ߢ⚻ᤨ⊛ߦჇടߔࠆ⚿ᨐߢߞߚޕ ߹ߚޔ ᚻߔࠅ߿ᵞ㕙บߩԘߣԛߩ⩶ᢙߦ㆑߇ࠇߡࠆὐ ߆ࠄޔห৻ㇱߢ߽ធ⸅㗫ᐲ߿ᚻᵞ╬ߩᳪᨴ᳓ߩ㘧 ᴜߩᓇ㗀ߢᳪᨴ▎ᚲߩ⩶ᢙߦ߫ࠄߟ߈߇ࠆߎߣ߇␜ ໂߐࠇߚޕ 㤛⦡ࡉ࠼࠙⩶ߪ⩶⚦⥸৻ޔห᭽ߦ↪⠪ߣߩធ⸅ ߢ৻ᤨ⊛ߦჇടߔࠆะ߇␜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▎ᚲߣߒߡㆡಾߢࠆߎߣ߇ ␜ໂߐࠇߚޕ ⼔ᣉ⸳࠻ࠗᐥ㕙 ߦ߅ߌࠆశ⸅ᇦᑪ᧚ߩ㒰 ⩶ലᨐߩᬌ⸽ ᣇᴺ శ⸅ᇦᑪ᧚ߣߒߡ Fig.5 ߦ␜ߔᒰ␠ MaSSC ࠪ࡞࠼ ࠲ࠗ࡞(MTS)ࠍ೨㗄ߩᳪᨴᐲߩታᘒᛠីߦ߅ߡޔᳪ 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߶ߣࠎߤᬌߐࠇߕޔᐥ㕙ߦ߅ߡ߽ઁߩ⩶ߦ Ყߴߡޔᬌߐࠇߚ⩶ᢙߪዋߥ߆ߞߚޕ᷹ቯࠍⴕߞߚ ฦㇱߦ߅ߡᄢ⣺⩶ߦᲧߴߡ㤛⦡ࡉ࠼࠙⩶ߩ⩶ᢙ ߇ᄙߊࠗ࠻ߦ․ޔᐥ㕙ߩᳪᨴ߇ㅴࠎߢࠆߎߣ߇⏕ ߐࠇߚޕ ⚿⺰ ⼔ᣉ⸳ߦ߅ߌࠆฦㇱ᷹ቯ▎ᚲߩઃ⌕⩶ᢙࠍ 2 ᤨ 㑆߅߈ߦ 22 ᤨ㑆᷹ቯߒޔ ⚻ᤨᄌൻߦ߅ߌࠆᳪᨴᐲߩ⺞ ᩏࠍⴕߞߚߣߎࠈࠗ࠻ޔᐥ㕙ߩᳪᨴᐲ߇ᦨ߽㜞߆ߞ ߚޕട߃ߡޔᐥ㕙ߩ⩶ᢙߪੱߩࠅߦࠃࠆᄌേ߇ዊ ߐߊޔᷡᓟ߆ࠄᰴߩᷡᤨ߹ߢჇടߔࠆะ߇␜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 ߦᰴႮ⚛㉄ߢ࠻ࠗᐥోߩᶖᲥࠍⴕޔ ߅ࠃ ߘ 5 ᤨ㑆ᓟߩ 16:00 ߦ᷹ቯࠍⴕߞߚޕ ᷹ቯ႐ᚲ ⼔ᣉ⸳ 3F ࠣ࡞ࡊࡎࡓ ࠻ࠗ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⏝࠸ࠊࢺࣞᗋ㠃 (10cm10cm)ࢆࢫ࣡ࣈ࡛ᣔࡁྲྀࡾ╔⳦ࢆ᥇ྲྀᚋࠊ ᇵ㣴ࡋ⳦ᩘࢆ࢝࢘ࣥࢺࡋࡓࠋศᯒᑐ㇟ࡣ୍⯡⣽⳦ࠊ ⭠⳦ࠊ㯤Ⰽࣈࢻ࢘⌫⳦ࡋࡓࠋྛ⳦ᩘࢆ ᐃࡍࡿ 㑅ᢥᇵᆅࡋ࡚ࠊ୍⯡⣽⳦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 ࡇࡢࣂࢫࢆᢚ࠼ࡿࡓࡵྠ୍⟠ᡤࡽศ㞳ᇵ 㣴ྍ⬟࡞ࢫ࣡ࣈἲษࡾ᭰࠼࡚ ᐃࢆ⾜ࡗࡓࠋ 3.1.4 ⤫ィᏛⓗホ౯ ගゐ፹ᢠ⳦ࢱࣝࡢ㝖⳦ຠᯝࡢ᭷ຠᛶࡘ࠸࡚ ࡣࠊᕤ๓ᚋࡢ⳦ᩘࢆ t ᳨ᐃ࡚ẚ㍑ࡍࡿࡇࡼ ࡾホ౯ࢆ⾜ࡗࡓࠋ 3.2 ⤖ᯝ⪃ᐹ Fig.7 ගゐ፹ᘓᮦᕤ๓ᚋ࠾ࡅࡿ୍⯡⣽⳦ᩘࡢ ⤖ᯝࢆ♧ࡍࠋ Fig.8 ගゐ፹ᘓᮦᕤ๓ᚋ࠾ࡅࡿ୍ ⯡⣽⳦ᩘࡢᖹᆒ್࠾ࡼࡧ t ᳨ᐃࡢ⤖ᯝࢆ♧ࡍࠋ Fig.8 ࡼࡾࠊගゐ፹ᘓᮦᕤᚋࡢ୍⯡⣽⳦ᩘ(10 ᪥㛫 ࡢᖹᆒ್)ࡣᕤ๓ẚ㍑ࡋࠊ᭷ពῶᑡࡋ࡚࠸ࡿࡇ ࡀ♧ࡉࢀࡓ(p<0.05)ࠋගゐ፹ᘓᮦᕤ๓ࡢ ᐃᮇࡀኟ ᮇࠊᕤᚋࡢ ᐃᮇࡀᮇ࡛࠶ࡿࡇࡽ⳦ࡢ⦾Ṫ ᙳ㡪ࡋ࡚࠸ࡿࡇࡀᠱᛕࡉࢀࡿࡶࡢࡢࠊᮇ࠾ࡅ ࡿࢺࣞᐊෆࡣ✵ㄪࡀຠ࠸࡚࠸ࡓࡓࡵࠊᖹᆒᐊ ࡀ 22Υ࡛࠶ࡗࡓࠋࡇࡢࡇࡽ⳦ࡢ⦾Ṫࡣᙳ㡪ࡀ࡞ ࡗࡓࡶࡢ⪃࠼ࡽࢀࡿࠋ ௨ୖࡢࡇࡽࠊගゐ፹ᘓᮦࡣ⎔ቃ⳦ᑐࡋ࡚⥲⳦ ᩘࢆపῶࡍࡿຠᯝࡀ࠶ࡿࡇࡀ♧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⪺ߒᣣ߇ 1 ᣣ (12 2 ᣣ)ࠇߚޕᒰ␠ߩ᛫⩶࠲ ࠗ࡞ߪశ⸅ᇦߦ᛫⩶㊄ዻࠍวࠊߖߚࡂࠗࡉ࠶࠼శ⸅ ᇦߢࠆߚޔṁߒߚ㊄ዻࠗࠝࡦ߇㤛⦡ࡉ࠼࠙⩶ ߦኻߒߡᲕ⩶ജ߇ૐߊߚߩߘޔහᤨᔕ╵ᕈ߇ૐߎ ߣ߇␜ໂߐࠇޔ㤛⦡ࡉ࠼࠙⩶ߪ⩶⠪߇᷹ቯኻ⽎ߦ ⸅ࠇߚߎߣߢ৻ᤨ⊛ߦჇടߒߚߣᗐቯߐࠇࠆޕ࿁߽ ߎߩࠤࠬ߇⠨߃ࠄࠇࠆߚޔᓟ߽ᬌ⸛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 ߅ߡߦᗧᏅߪᓧࠄࠇߥ߆ߞߚ(ޕ㤛⦡ࡉ࠼࠙ ⩶㧦= 0.756㧘ᄢ⣺⩶㧦= 0.175)ߘߩℂ↱ߣߒߡޔ㤛 ⦡ࡉ࠼࠙⩶ߦߟߡߪ122ᣣߦᄖࠇ୯߇ᬌߐߖ ߚߚߣ⠨߃ࠄࠇࠆߚ߹ޕᄢ⣺⩶ߦߟߡߪᣉᎿ೨ߦ ᬌߐࠇߚ⩶ᢙ߇ዋߥ߆ߞߚߎߣ߇ⷐ࿃ߣߒߡ⠨߃ࠄ ࠇࠆޕ ⚿⺰ ೨㗄ߩ⺞ᩏߦ߅ߡ⼔ᣉ⸳ߢᦨ߽ᳪᨴᐲ߇㜞߆ ߞߚ࠻ࠗᐥ㕙ߦశ⸅ᇦᑪ᧚(MTS)ࠍᣉᎿߒߚߣߎࠈޔ శ⸅ᇦᑪ᧚ᣉᎿᓟߩ৻⥸⚦⩶ᢙ 10 ᣣ㑆ߩᐔဋ୯ߪ ᣉᎿ೨ߣᲧセߒޔᗧߦᷫዋߒߡࠆߎߣ߇␜ߐࠇߚ (<0.05)ޕశ⸅ᇦᑪ᧚ߪޔⅣႺ⩶ߦኻߒߡ㒰⩶ലᨐ߇ ࠆߎߣ߇␜ߐࠇߚޕ ․ᡰេቇᩞஜቶߦ߅ߌࠆశ⸅ᇦᑪ᧚ߩ㒰⩶ ലᨐߩᬌ⸽ ᣇᴺ ᒰ␠ MaSSC ࠪ࡞࠼࠲ࠗ࡞(MTS)ࠍ․ᡰេቇᩞ ߩஜቶᐥ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 ർᎺᏒ┙ᐈ․ᡰេቇᩞ (A)ᑈਅญᅏ(ޔB)ᑈਅญᚻ೨(ޔ1)ஜቶౝญᅏޔ (2)ஜቶౝญᚻ೨(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 ᩕ⎇ൻቇ߰߈ขࠅࠠ࠶࠻ࠍ↪ޔஜቶᐥ㕙 (10cm10cm)ࠍࠬࡢࡉߢ߈ขࠅઃ⌕⩶ࠍណขߒߚ Fig.11 Ground plan showing measurement points. ᓟޔၭ㙃ߒ⩶ᢙࠍࠞ࠙ࡦ࠻ߒߚޕಽᨆኻ⽎ߪ৻⥸⚦⩶ ߣߒޔၭ㙃ߦߪ CASO ኙᄤၭࠍ↪ߒߚޕ ⛔⸘ቇ⊛⹏ଔ శ⸅ᇦ᛫⩶࠲ࠗ࡞ߩ㒰⩶ലᨐߩലᕈߦߟߡߪޔ 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ߦ߅ߡ৻⥸⚦⩶ᢙߪ߶߷ 30 cfu/10cm2 ߢࠅޔஜቶߩᐥ㕙ߩᳪᨴᐲߪో⊛ߦ シᐲߥᳪᨴߢߞߚ ޕFig.13 ࠃࠅࠦࡦ࠻ࡠ࡞ߦ߅ߌ ࠆశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߩ৻⥸⚦⩶ᢙߦᗧᏅ߇ߥߎ ߣ߇␜ߐࠇߚ(㧩0.597)৻ޕᣇޔFig.14 ࠃࠅశ⸅ᇦᑪ᧚ ᣉᎿࠍⴕߞߚ▎ᚲߢߩ৻⥸⚦⩶ᢙߩᐔဋ୯ߪޔᗧߦ ᷫ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 ᚲߦ߅ߡߪ࡞ࡊࡦࠨޔᢙࠍዋߥߊߒߚ᧦ઙߢ߽৻ޔ ⥸⚦⩶ᢙߪᣉᎿᓟߦᗧߦᷫዋߒߡ߅ࠅޔశ⸅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 ․ᡰេቇᩞஜቶᐥ㕙ߦశ⸅ᇦᑪ᧚(MTS)ࠍᣉᎿ ߒޔᑪ᧚ᣉᎿ೨ᓟߦ߅ߌࠆઃ⌕⩶ᢙࠍฦ 3 ᣣ㑆᷹ቯߒ ߚࠆߌ߅ߦ࡞ࡠ࠻ࡦࠦޕశ⸅ᇦᑪ᧚ᣉᎿ೨ᓟߩ৻⥸ ⚦⩶ᢙߦᗧߥᄌേߪߥ߆ߞߚ߇ޔశ⸅ᇦᑪ᧚ᣉᎿࠍ ⴕߞߚ▎ᚲߢߩ৻⥸⚦⩶ᢙߩᐔဋ୯ߪޔᣉᎿᓟߦᗧ ߦᷫዋߒߡ߅ࠅޔశ⸅ᇦ࠲ࠗ࡞ߦࠃࠆ㒰⩶ലᨐࠍ⏕ ߔࠆߎߣ߇ߢ߈ߚޕ ⚿⺆ ᧄႎߢߪ⼔ᣉ⸳ߩᳪᨴᐲߩታᘒᛠីࠍ⋡⊛ߣߒ ߡߦ⊛ᤨ⚻ޔઃ⌕⩶ᢙߩ᷹ቯࠍⴕߞߚ⼔ޕᣉ⸳ߩ⺞ ᩏ߆ࠄࠗ࠻ޔᐥ㕙ߩᳪᨴᐲ߇ᦨ߽㜞ะࠍ␜ߔߎ ߣࠍ⏕ߒߚޕട߃ߡ⩶ޔᢙߩേ߆ࠄᳪᨴᐲߩ⹏ଔ ▎ᚲߣߒߡޔ࿁ߩ৻ㅪߩ⹜㛎ߦ߅ߡߪᦨㆡߢࠆ ߎߣ߇␜ໂߐࠇߚ⼔ߩߘޔߦࠄߐޕᣉ⸳࠻ࠗ߅ࠃ ߮․ᡰេቇᩞஜቶߩᐥ㕙ߦశ⸅ᇦ࠲ࠗ࡞(MTS)ࠍ ᣉᎿߒޔઃ⌕⩶ᢙࠍ᷹ቯߒߚޕశ⸅ᇦ࠲ࠗ࡞ࠍᣉᎿߔ ࠆߎߣߢᗧߦ⩶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⎇ⓥߪർᎺᏒౝߩ∛㒮㑐ଥ⠪ߣหߢㅴߡ ߅ࠅ↥ޔᬺක⑼ᄢቇ∛㒮㋈ᧁసౖഥᢎޔᏒ┙ᐈ∛ 㒮દ⮮㊀ᒾ㒮㐳ޔਛᎹሶ⋴⼔ㇱᗵᨴ▤ℂᜂᒰ ଥ㐳ߩߏഥ⸒߮ߏදജߦᗵ⻢ߚߒ߹ߔ⺞ޔߚ߹ޕ ᩏߦߏදജߚߛߚฦᣉ⸳߅ࠃ߮ർᎺᏒ┙ᐈ ․ᡰេቇᩞ㑐ଥ⠪ߩᣇߦޘᗵ⻢ߚߒ߹ߔޕ ෳ⠨ᢥ₂ 1) ᮘญᒾ㧘ේ⾐ਭੱ㧘ศ᳗ብ㧘᪢↰㓁ᐔ㧘ጊፒஜ ਯ㧦ࡈࠫࠦᛛႎ 17㧔2009㧕49 2) ᮘญᒾ㧘ේ⾐ਭੱ㧘ศ᳗ብ㧘᪢↰㓁ᐔ㧦ࡈࠫࠦ ᛛႎ 16㧔2008㧕54 3) ᮘญᒾේ⾐ਭੱ㧦ࡈࠫࠦᛛႎ 15㧔2007㧕68 4) ᮘญᒾฎ↰ඳᤘ㊁ᄢᔒᦶ㧦ࡈࠫࠦᛛᴺ 14 (2006) 37 5) ᮘญᒾ㧘የፒ㦖ብ㧦ࡈࠫࠦᛛႎ 13 (2005) 43 6) የፒ㦖ብ㧦ࡈࠫࠦᛛႎ 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 .