Study on the Characterization of Activated Carbon and Its Effect on the Adsorption of Hg0

本文探讨了苯甲酸浸渍法如何改变改性活性炭表面含氧官能团的种类与数量以及其在140℃下对烟气中Hg0的吸附作用影响。 燃煤电厂因为煤种、燃烧炉、除尘设备等不同导致Hg0的排放量不同。烟气中因Hg0的浓度低、烟道温度高增加了活性炭注入法治理Hg0污染的难度，不能使活性炭如同治理垃圾焚烧厂的汞污染排放一样可以吸附大量的汞。因此提高活性炭对烟气中Hg0的吸附能力成为解决燃煤电厂的Hg0排放污染的重要途径。 苯甲酸浸渍法制备的改性活性炭经证实有效地提高了对Hg0的饱和吸附容量。本实验安装了在N2氛围下，设置进口汞浓度为10μg/m3，温度为140℃的汞排放吸附装置。未改性活性炭（BPL）的饱...This article discussed the benzoic acid activated carbon which changes the kinds and content of oxygen-function groups on the surface of activated carbon and the effect of that on the adsorption for Hg0 in flue gas. The amount of Hg0 emissions varied greatly by the coal-fired power station due to the difference of coal-type, boilers and pollution controllers, etc. Compared with the higher effie...学位：工学硕士院系专业：海洋与环境学院环境科学与工程系_环境工程学号：2262008115156

Determination of Trace Atmospheric Mercury by Two-stage Gold Amalgamation Cold Vapor Atomic Fluorescence Spectrometry Method

在已有仪器的基础上进行改装,建立了二次金汞齐冷原子荧光光谱法(CVAfS)测定大气中痕量气态元素汞(gEM)和颗粒态总汞(TPM)的方法.该方法的检出限为2 Pg,二次金汞齐的转移效率为99%,在0--2 ng范围内做标准曲线,线性关系为0.999 5,检测精密度为1.89%.运用该方法于2009年7月对厦门地区大气环境中的gEM和TPM进行了采集检测,结果显示厦门地区未受明显汞污染.该分析方法也能用于其他环境样品痕量汞的检测.A new procedure to determine trace gaseous elemental mercury(GEM) and total particulate mercury(TPM) in the atmosphere by two-stage gold amalgamation cold vapor atomic fluorescence spectroscopy was set up.The detection limit of this method is 2 pg.The transfer efficiency from the sample trap to the analyze trap was 99% and precision of 1.89% was obtained.GEM and TPM are measured at two specific areas in Xiamen during July,2009,and the results showed that there was no significant mercury pollution in Xiamen area.This method can also be used to analyze trace mercury contents in other environmental samples.国家自然科学基金项目(20707018);福建省科技重点项目(2008I0024