| 石墨探针直接收集和石墨探针炉原子吸收法测定APM中痕量镉 |
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| 引用本文： | 葛伊莉,周立群.石墨探针直接收集和石墨探针炉原子吸收法测定APM中痕量镉[J].光谱学与光谱分析,1998,18(4):446-449. |
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| 作者姓名： | 葛伊莉 周立群 |
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| 作者单位： | 湖北大学化学系 |
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| 摘 要： | 本文采用多孔石墨探针直接采集大气微粒物质（ＡＰＭ）后，立即用石墨探针炉原子吸收法测定收集在探针上的ＡＰＭ中镉。实验表明，面积吸光度与镉的浓度在０－５０μｇ／Ｌ呈良好线性关系。镉的特征量和检测出限分别为２．４８和１．８６ｐｇ，其相对标准偏 ２．０６％，分析标准参比其回收率和相对标准偏差。分别为９０．１５－９９．２９％和４．０９％。方法准确、灵敏、快速、简便。
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| 关 键 词： | 石墨探针 原子吸收法 APM 镉 测定 大气微粒物质 |
DIRECT COLLECTION WITH GRAPHITE PROBE FILTERS AND DETERMINATION OF TRACE CADMIUM IN ATMOSPHERIC PARTICULATE MATTER BY GRAPHITE PROBE FURNACE ATOMIC ABSORPTION SPECTROMETRY |
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| Y Ge,L Zhou,B Zhang,H Cai.DIRECT COLLECTION WITH GRAPHITE PROBE FILTERS AND DETERMINATION OF TRACE CADMIUM IN ATMOSPHERIC PARTICULATE MATTER BY GRAPHITE PROBE FURNACE ATOMIC ABSORPTION SPECTROMETRY[J].Spectroscopy and Spectral Analysis,1998,18(4):446-449. |
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| Authors: | Y Ge L Zhou B Zhang H Cai |
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| Institution: | Department of Chemistry, Hubei University, 430062 Wuhan. |
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| Abstract: | After atmospheric particulate matter was directly collected with graphite probe filters, the trace cadmium in APM was determined by graphite probe furnace atomic absorption spectrometry. The results showed that the absorbance (peak-area mode)and the concentration of cadmium had a excellent linearity in the range of 0-50 microg/L. The characteristic mass and detection limit (3 sigma) were 2.48 and 1.86 pg, respectively. Its relative standard deviation was 2.06% (n = 11). The results of analysis of the National Bureau of standards of America, Standard Reference Material (SRM) No. 1648, Urban Particulate Matter, gave a recovery of 90.15-99.29% with RSD of 4.09%. The method proved to be accurate, sensitive, rapid and simple. |
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| Keywords: | Graphite probe Atomic absorption spectrometry Atmospheric particulate matter Trace cadmium |
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