HEAVY METAL EXPOSURE--ELEMENTAL AND ISOTOPIC COMPOSITION OF SAMPLES

重金属暴露——样品的元素和同位素组成

• 批准号: 6587633
• 负责人: H J SIMPSON
• 金额: $ 8.37万
• 依托单位: MOUNT SINAI SCHOOL OF MEDICINE OF CUNY
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-04-15 至 2003-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6587633
• 关键词: air sampling /monitoring; analytical chemistry; bioaccumulation; engine exhaust; environmental contamination; environmental toxicology; environmental transport; fish; fossil fuel energy; hazardous substances; heavy metals; industrial waste; lead; lead poisoning; mercury; soil pollution; soil sampling; urban area; water environment; water pollution; water sampling /testing

DESCRIPTION (Taken from application) Large quantities of toxic metals remain dispersed in the environment where their distribution and fate are imperfectly characterized, especially near large urban centers where both emissions and population density are concentrated. Moreover, significant quantities of metals continue to be added to the environment, particularly to natural waters where they accumulate in sediments and, in cases such as Hg, can be accumulated by fish and thus reach human diets. A central aim of this project will be to better characterize current sources and transport mechanisms of Pb, Hg and other metals to the NY metropolitan area and Hudson River basin. We will continue to work in very close collaboration with ongoing research on chlorinated hydrocarbons. Our approach will be to reconstruct and extend temporal trends in contaminant levels, including Pb isotope compositions, through analysis of dated environmental samples (airborne particulate matter from filters, sediments core depth profiles and landfill ash deposits of known age) to assemble the history of development and use of municipal and non-municipal waste incinerators in New York City, and to compare our sediment-derived contaminant history to NYS DEC's database on contaminant levels in fish from several parts of the Hudson River basin. We will expand our use of urban lakes and park soils to characterize the temporal history and geographical extent of urban atmospheric deposition rates of metals. Data generated should allow us to investigate potential for human exposure to metals and chlorinated hydrocarbons from city parks and community gardens, to investigate human exposure pathways of chlorinated organics and Hg via fish consumption, and contribute to ongoing state and federal investigations of Superfund sites within the metropolitan area and Hudson River Basin.

描述（取自应用程序） 大量有毒金属仍然分散在环境中 他们的分布和命运是不完美的，尤其是在附近 排放和人口密度的大城市中心 集中。此外，继续添加大量金属 到环境，特别是在它们积累的自然水域 沉积物，在诸如HG之类的情况下，可以通过鱼积累，从而达到 人类饮食。该项目的主要目的是更好地描述 PB，HG和其他金属的当前来源和运输机制到纽约 大都市地区和哈德逊河盆地。我们将继续工作 与正在进行的氯化碳氢化合物的研究密切合作。我们的 方法将是重建和扩展污染物的时间趋势 通过分析过时的水平，包括PB同位素组成 环境样品（过滤器，沉积物的机载颗粒物物质 已知年龄的核心深度概况和垃圾填埋灰沉积物组装 市政和非非碎屑的发展和使用历史 纽约市的焚化炉，并比较我们的沉积物衍生的污染物 NYS DEC的数据库历史上有关鱼类污染物水平的数据库 哈德逊河盆地。我们将扩大对城市湖泊和公园的使用 土壤来表征城市的时间历史和地理范围 金属的大气沉积速率。生成的数据应该使我们能够 研究人类接触金属和氯化的潜力 来自城市公园和社区花园的碳氢化合物，调查人类 氯化有机物和HG的暴露途径通过鱼类消耗，以及 为持续的州和联邦对超级基金网站的调查做出贡献 在大都市地区和哈德逊河盆地内。