Study on the effective deodorization of the odor in medical environment

通过以下两个实验考察了几种常见物质对医疗环境中几种典型气味的除臭效果。首先，完成了气味的基础实验，构建了生理和心理测量的方法学，并成功地同时建立了结合脑电和语义区分技术的气味评估系统。利用该系统对几种气味物质如薰衣草油、水飞蓟醇、异异氰酸酯等进行了生理效应检测，证实薰衣草油有一定的镇静作用。氨是医疗环境中的一种典型气味。我们做了一个实验，如何用一些熟悉的物质来去除氨的气味，比如咖啡渣、用过的茶叶、薄荷油、活性碳。他们制造了九种气味物质，分别由四种常见物质的氨水和四种常见物质的氨水组成。受试者为14名健康女性。对受试者随机给予7种气味物质，并对它们的气味强度、愉悦感和质量进行评价(25个评分表用于语义区分(SD))，结果如下：1.咖啡渣氨气和用过的茶叶氨气气味对氨气主观气味强度的影响最大。2.咖啡渣对氨气的气味有轻微的刺激性，而用过的茶叶既不令人愉快也不难闻，这说明咖啡渣是最有效的氨气脱臭物质。而且，当氨的气味被除臭时，气味的感官质量也发生了变化。

We investigated about deodorant effects of several familiar substances to some typical smells in the medical environment, through the following two experiments.First, we achieved a basic experiment about odor in order to constructing the methodology for physiological and psychological measurements, and we succeed to establishing the odor assessment system using by both the EEG and the semantic-differential technique, simultaneously. Using this system, we checked some physiological effects of several odor substances, such as the lavender oil, the scatol, and the iso-kisoic asid, and confirmed that the lavender oil had a little tendency of the sedative effect.Next, we achieved a further experiment about deodorant effects of several substances using by the ammonia. Ammonia causes one of the typical smells in medical environment. We had an experiment how the odor of ammonia is deodorized by some of familiar substances, such as coffee grounds, used tea leaves, peppermint oil, active carbon. Nine odorants were made, consist of ammonia, each of four familiar substances, and ammonia with each of four substances. The subjects were fourteen healthy women. They were given the seven odorants at random and evaluated their intensity, pleasantness-unpleasantness, and quality (Twenty-five rating scales used in semantic-differential (SD)).The results were as follows ; 1. The odor of ammonia with coffee grounds and the one with used tea leaves decreased most the intensity of subjective odor of ammonia. 2. The odor of ammonia with coffee grounds was slightly unpleasant, and the one with used tea leaves was neither pleasant nor unpleasant.These results suggested that the coffee grounds were most effective substance which deodorizes the odor of ammonia. And, the sensory qualities of the odor changed when the odor of ammonia deodorized.