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Development of the portable device of magnetopneumography and its utilization for the measurement in workers occupationally exposed to various dusts.

便携式呼吸磁图仪的开发及其用于测量职业接触各种粉尘的工人的应用。

基本信息

批准号：
16590484
负责人：
NAKADATE Toshio
金额：
$ 2.24万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

It will be quite useful for the primary prevention of pneumoconiosis caused by mineral dust inhalation to estimate the amount of dust accumulated in the lung. Magnetopneumography (MPG) was first developed about 30 years ago as one of those methods, but has not been utilized in so many studied because it is difficult to bring the large device to worksites. If the device becomes smaller and portable, MPG measurements will be used more widely in various occupational settings.Therefore we tried to make the device smaller and easier to bring, in order to use it in actual worksites. We also tried to improve the measurement procedure for more accurate and sensitive testing. Our portable MPG device is small enough to bring to each worksite of workers and can utilize conventional 100 voltage electric source. The accuracy and sensitivity of this device was confirmed in the measurements of arc welders. Thus it is expected to use this portable device in the exposure assessment and health risk assessment in arc welders.In order to use the device in various works other than welding, we tested the magnetic strength of several types of dusts. As one of those is the printing toner dust which showed 5-30 % of magnetic strength of welding fume. At this moment of time, the sensitivity of our device may not be sufficient for the measurement of toner workers because the work environment of toner workers is maintained quite well. We will be able to conduct MPG measurement in toner workers by further improvement of the device in its sensitivity and elimination of background noise.

估计肺内粉尘蓄积量，对一级预防矿物粉尘吸入性尘肺有重要意义。磁肺图（MPG）作为这些方法中的一种在大约30年前首先发展起来，但由于难以将大型设备带到工作现场，因此尚未在如此多的研究中使用。如果设备变得更小和便携，MPG测量将在各种职业环境中得到更广泛的应用。因此，我们试图使设备更小，更容易携带，以便在实际工作场所使用它。我们还试图改进测量程序，以实现更准确和灵敏的测试。我们的便携式MPG设备足够小，可以带到工人的每个工作现场，并可以使用传统的100伏电源。该装置的准确性和灵敏度在弧焊机的测量中得到了证实。因此，该便携式设备有望用于电焊工的暴露评估和健康风险评估。为了将该设备用于焊接以外的各种工作，我们测试了几种类型粉尘的磁场强度。其中之一是打印墨粉粉尘，其显示出焊接烟雾的5- 30%的磁场强度。在这个时刻，我们的设备的灵敏度可能不足以测量墨粉工人，因为墨粉工人的工作环境保持得相当好。通过进一步提高装置的灵敏度和消除背景噪声，我们将能够在墨粉工人中进行MPG测量。