NEW PORTABLE XRF SYSTEM FOR LEAD PAINT ANALYSIS

用于含铅涂料分析的新型便携式 XRF 系统

• 批准号: 3507578
• 负责人: GERALD ENTINE
• 金额: $ 26.14万
• 依托单位: RADIATION MONITORING DEVICES, INC.
• 依托单位国家: 美国
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-23 至 1994-12-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3507578
• 关键词: X ray spectrometry; analytical method; automated data processing; bioengineering /biomedical engineering; biomedical automation; biomedical equipment development; building /facility design /renovation; computer simulation; consumer product; environmental contamination; ergonomics; fluorescence spectrometry; housing; lead; radiation detector

Lead poisoning in the United States is a serious health problem which is estimated to affect some 3 to 4 million children under the age of six years old. To prevent this number from growing, the federal government has mandated that all properties subsidized by the Department of Housing and Urban Development (HUD) must be inspected by the year 1995. This means that approximately 2,000,000 properties must be inspected over the next 5 years. To accomplish this task, a measurement protocol must be established which is not only accurate and reliable, but also very fast. The most modern and practical approach to this problem is to use on-site quantitative screening by X-ray fluorescence (XRF) analysis. Several such systems are currently on the market for this purpose, but in a recent HUD sponsored study, none of these systems performed well in making field-based measurements. We propose to develop a new, portable XRF system which can accurately and reliably measure low levels of lead in painted structures. Using our new system, home inspectors will be able to measure lead levels as low as 0.5 mg/cm2 with a statistical accuracy of 0.05 mg/cm2. Furthermore, our system will be able to perform such a measurement in about 10 seconds. By integrating our concept with modern microprocessor based electronics and a rugged ergonomic design, the entire screening process will be made much more efficient and accurate.

在美国，铅中毒是一个严重的健康问题 估计会影响约3至400万六岁的儿童 年龄。 为了防止这个数字增长，联邦政府 已要求住房部补贴的所有财产 和城市发展（HUD）必须在1995年进行检查。 意味着必须对大约200,000个物业进行检查 接下来的5年。 为了完成这项任务，必须建立一个测量协议 不仅是准确和可靠的，而且非常快。 最现代的 解决此问题的实用方法是使用现场定量 通过X射线荧光（XRF）分析进行筛选。 几个这样的系统是 目前出于此目的是市场上的，但在最近的HUD赞助中 研究，这些系统在制作基于现场的系统方面均未表现出色 测量。 我们建议开发一个可以准确的便携式XRF系统， 可靠地测量彩绘结构中低水平的铅。 使用我们的新 系统，房屋检查员将能够测量低至0.5的潜在客户水平 Mg/cm2的统计精度为0.05 mg/cm2。 此外，我们的 系统将能够在大约10秒内执行这种测量。 通过将我们的概念与现代微处理器的电子设备相结合 以及坚固的人体工程学设计，将进行整个筛选过程 更有效和准确。