CORE--STABLE LEAD ISOTOPE AND TRACE ELEMENT ANALYSIS

这个分析核心将被安置在拉蒙特-多尔蒂地球天文台 (LDEO)，并将提供样品的元素和铅同位素测量 水、土壤、沉积物、淤泥、气溶胶过滤器、油漆和灰尘。 这些测量旨在确定铅的来源(和 其他重金属)对纽约州环境的污染。样品来自 以下项目将在LDEO上进行分析： 1.人类铅暴露与环境污染/再污染 在纽约大桥下。 2.利用元素和元素研究城市重金属暴露的来源和途径 环境样品的同位素组成 3.接触氯代烃的来源和途径 纽约市水与空气公司。 为了进行这些测量，我们将利用 电感耦合等离子体质谱，热电离质量 光谱分析、伽马射线光谱分析设备以及化学 LDEO的准备实验室。

This analytical core will be housed at Lamont-Doherty Earth Observatory (LDEO) and will provide elemental and Pb-isotopic measurements on samples of waters, soils, sediments, sludges, aerosol filters, paints and dust. These measurements are designed to establish the sources of lead (and other heavy metal) contamination in the N.Y.C. environment. Samples from the following projects will be analyzed at LDEO: 1. Human Lead Exposure and Environmental Contamination/Recontamination under N.Y.C. Bridges. 2. Sources and Pathways of Urban Heavy Metal Exposure Using Elemental and Isotopic Composition of Environmental Samples. 3. Sources and Pathways of Chlorinated Hydrocarbon Exposure Derived from New York City Water and Air. In order to make these measurements we will take advantage of Inductively-Coupled Plasma Mass Spectrometry, Thermal Ionization Mass Spectrometry, and Gamma-Ray Spectrometry facilities, as well as chemical preparation laboratories at LDEO.