CORE--STABLE LEAD ISOTOPE AND TRACE ELEMENT ANALYSIS

这个分析核心将被安置在拉蒙特-多尔蒂地球观测站 （LDEO），并将提供样品的元素和铅同位素测量 沃茨、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（以及 其他重金属）污染。环境 样本 LDEO将分析以下项目： 1.人体铅暴露与环境污染/再污染 在纽约市桥梁. 2.应用元素分析法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.氯化烃暴露的来源和途径 纽约市水和空气。 为了进行这些测量，我们将利用 电感耦合等离子体质谱，热电离质谱 光谱仪和伽马射线光谱仪设施，以及化学 LDEO的制备实验室。

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.