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 预计将影响约 3 至 400 万六岁以下儿童 岁了。 为了防止这个数字继续增长，联邦政府 要求所有由住房部补贴的房产 和城市发展（HUD）必须在 1995 年之前进行检查。 意味着在这段时间内必须检查大约 2,000,000 处房产 未来5年。 为了完成这项任务，必须建立一个测量协议 不仅准确可靠，而且速度非常快。 最现代的 解决这个问题的实际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 目前市场上有用于此目的的产品，但在最近的 HUD 赞助中 研究表明，这些系统在基于现场的制作方面都没有表现良好 测量。 我们建议开发一种新型便携式 XRF 系统，该系统可以准确且可靠地 可靠地测量涂漆结构中的低含量铅。 使用我们的新 系统，房屋检查员将能够测量低至 0.5 的铅含量 mg/cm2，统计精度为0.05 mg/cm2。 此外，我们的 系统将能够在大约 10 秒内完成这样的测量。 通过将我们的理念与基于现代微处理器的电子产品相结合 和坚固的人体工程学设计，整个筛选过程将 更加高效和准确。