ADSORPTION DESORPTION OF PCBS ON HUDSON RIVER CLAY

(由NIEHS Superfund ESO4913向D.Carpenter提供支持)。这个 河流粘土对多氯联苯的吸附作用 取决于粘土颗粒的大小、颗粒的类型 (元素分析)和粒子的几何形状。HVEM和IVEM 用来确定粘土颗粒的大小，元素 构图和形状。我们希望能够找到真正的 未来多氯联苯在颗粒上的吸附位置。使用IVEM， 能量色散X射线微区分析光谱和数字显微图像 取自含有多氯联苯的圣劳伦斯河粘土颗粒。 使用冷冻-EM保留挥发性印刷电路板。然后使用高压电子显微镜 以提供更大粒子的改进图像，这些粒子由 IVEM，以及分析领域的广泛概述。结果是 在8月份的显微镜和显微分析‘98上发表了。 周文华，刘晓梅，刘晓梅，陈建民，陈晓华，等.(1998) 多氯联苯对沉积物的污染。显微技术与显微分析 第四卷，补充。2(过程《显微技术与显微分析》，1998版。 Bailey等人，Springer，纽约，pp.498-499。

(Supported by NIEHS Superfund ESO4913 to D. Carpenter). The adsorption of polychlorinated biphenyls (PCB's) onto river clay depends upon the size of the clay particle, the type of particles (elemental analysis) and the geometry of the particles. HVEM and IVEM were used to determine the clay particle size, the elemental composition and the shape. We hope to be able to locate the actual PCB adsorption sites on the particles in the future. Using the IVEM, energy-dispersive X-ray microanalysis spectra and digital micrographs were taken of particles of St. Lawrence river clay containing PCB's. Cryo-EM was used to retain the volatile PCB's. Then the HVEM was used to provide improved images of the larger particles analyzed by the IVEM, and wide-field overviews of the analysis areas. The results were presented at Microscopy and Microanalysis '98 in August. Tivol, W.F., Casey, A.C., Liu, X-M, Bush, B. (1998) Binding of polychlorinated biphenyls to sediment. Microscopy and Microanalysis Vol 4, suppl. 2 (Proc. Microscopy and Microanalysis '98) Ed. G. Bailey, et al., Springer , New York, pp. 498-499.