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对南昌市某证券营业厅内环境进行了四天的卫生学调查，空气中二氧化碳浓度、细菌总数等卫生学指标表明营业厅内空气清洁状况在营业后显著恶化。厅内人数达高峰时，一氧化碳、二氧化碳浓度也达高峰，而细菌总数则到收盘时最高。厅内噪声值显示该环境为一较嘈杂的场所。顾客填单的部分柜台水平照度不能满足卫生学要求。
A four-day hygiene survey was conducted on the environment inside a securities business hall in Nanchang City. Hygienic indicators such as the concentration of carbon dioxide in the air and the total number of bacteria showed that the air cleaning in the business hall was significantly deteriorated after the operation. When the number of people in the hall reached the peak, the concentration of carbon monoxide and carbon dioxide reached a peak, while the total number of bacteria reached the highest level at the close. The noise level in the hall shows that the environment is a noisy place. Some customers fill a single bar counter illumination level can not meet the hygiene requirements.