CURRENT EVALUATION OF LIBBY ASBESTOS EXPOSURES

利比石棉暴露的当前评估

• 批准号: 7959562
• 负责人: Tony John Ward
• 金额: $ 14.55万
• 依托单位: UNIVERSITY OF MONTANA
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7959562
• 关键词: Address; Amphiboles; Area; Asbestos; Burn injury; Centers of Research Excellence; Communities; Computer Retrieval of Information on Scientific Projects Database; Coupled; Data; Deposition; Environmental Health; Evaluation; Exposure to; Feedback; Fiber; Funding; Future; Grant; Harvest; Health; Heating; Home environment; Hot Spot; Institution; Mining; Railroads; Research; Research Personnel; Resources; Risk; Sampling; Site; Source; Tree Bark; Trees; United States National Institutes of Health; Veins; Wood material; Work; falls; prevent; vermiculite

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Vermiculite historically extracted from the Libby, MT mine was contaminated with a toxic form of naturally-occurring fibrous and asbestiform amphibole occurring in veins throughout the deposit. It has recently been discovered that tree bark samples collected within the EPA restricted mine area, within the town of Libby, and along the railroad corridor west of town also contain varying levels of amphibole contamination. This COBRE subproject is composed of three separate Specific Aims. Through the analysis of bark samples coupled with the analysis of meteorological data, Aim 1 will determine the extent of contamination at varying distances from the mine site. This Aim will enable the EPA and health investigators at the Center for Environmental Health Sciences to focus and refine their efforts by identifying where the asbestos plume was distributed throughout the area. Results of Aim 1 could identify new "hot spots" that have not yet been discovered, possibly averting future asbestos exposures, while also determining safe areas for firewood harvesting. Aim 2 will address what happens to amphibole fibers when contaminated wood is burned during residential home heating, and determine if the inhabitants of the Libby valley are (potentially) currently being exposed to asbestos through wood stove use, the most common form of residential home heating in Libby. Aim 2 will also provide immediate feedback to residents regarding potential risks in burning contaminated firewood, having an impact in communities well beyond Libby. Through the analysis of bark samples from trees in proximity to railroad corridors, Aim 3 will determine the extent of asbestos contamination in specific railroad corridors (from Spokane, WA to Libby to Great Falls, MT) originating from Libby in order to recreate the historical exposure path. It is hoped that the results generated in Aim 3 will prevent future exposures to those that reside and work along these corridors.

该副本是利用众多研究子项目之一 由NIH/NCRR资助的中心赠款提供的资源。子弹和 调查员（PI）可能已经从其他NIH来源获得了主要资金， 因此可以在其他清晰的条目中代表。列出的机构是 对于中心，这不一定是调查员的机构。 历史上从利比（Libby）提取的ver斑岩矿山被污染的是一种天然纤维状和石棉的二木，整个沉积物中的静脉中发生在静脉中。 最近发现，在Libby镇内，在EPA限制的矿区内收集的树皮样品，沿着小镇以西的铁路走廊也包含不同程度的闪石污染。 该毛线副本由三个独立的特定目的组成。 通过对树皮样品的分析，结合气象数据的分析，AIM 1将决定距矿场不同距离时的污染程度。 这个目标将使环境健康科学中心的EPA和健康调查人员能够通过确定在整个地区分配石棉羽流的位置来集中精力和完善他们的努力。 AIM 1的结果可以确定尚未发现的新“热点”，可能会避免未来的石棉暴露，同时还确定了柴火收获的安全区域。 AIM 2将解决闪光纤维在住宅供暖过程中燃烧的木纤维发生的情况，并确定利比谷的居民（可能是）目前（可能）通过使用木炉使用石棉，这是利比比在利比比尔的最常见住宅供暖的形式。 AIM 2还将为居民提供有关燃烧受污染的柴火的潜在风险的立即反馈，并对Libby以外的社区产生影响。 通过分析从邻近的树木到铁路走廊的树皮样品，AIM 3将确定特定铁路走廊（从华盛顿州斯波坎到利比的特定铁路走廊上的石棉污染程度），源自利比，源自利比，为了重现历史暴露路径。 希望在AIM 3中产生的结果能够防止将来对居住和沿这些走廊工作的结果接触。