建物内の汚れ度と汚染度の関連性と汚染除去に関する研究

摘要

In the present study, glossiness and contamination levels measured with the device to detect ATP values on the surfaces touched by washroom user's hands were measured while order levels in the washroom were subjectively evaluated. The results showed that the floor surface became dirty and order was smelled as number of washroom users increased. At the same time, number of bacteria (NB) on the surfaces was also measured. Both ATP value and NB on the doorknob and the water tab increased as number of washroom users increased simultaneously. This relationship was confirmed experimentally on the door knob touched by hands that were contaminated at the same level. The effect of elimination of contamination materials on the doorknob was then tested with dry or wet cleaning materials, e.g., towel and micro cloth etc. As a result, both ATP value and NB decreased more effectively by wet materials than dry ones.%建物内の人が接触する可能性の高い部位，特にトイレ内の部位を中心に汚れ度と汚染度を測定した結果から以下の事柄を確かめた。1）汚れ度においては，トイレの利用人数が増加すると床の汚れ度が高くなり，臭いの申告が臭い側に移行することを確認した。また,グレースケールは床面の表面色が濃い場合は使用できないことを改めて確かめた。2）人の手の接触が多い入口ドアノブ，洗面蛇口では，利用人数の増加に伴い，ATP値と一般生菌数が増加することを確認した。