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1材料与方法采用HGA－400石墨炉Perkin－Elmer2380G型原子吸收光谱仪，带有佩灯背景校正。其操作参数由制造商推荐，2urn的宽带和可调谐波长供实验者调节，（Bi的波长为3O68urn，Sb为231．2urn，Sn为286．3urn）。采用末涂层石墨管以及峰高测量方式，对HGA－40O的标准升温程序
1 Materials and Methods Graphite furnace HGA-400 Perkin-Elmer2380G atomic absorption spectrometer, with a pendant lamp background correction. Its operating parameters are recommended by the manufacturer. The 2-nm wideband and tunable wavelengths are tunable to the experimenter. (The wavelength of Bi is 3O68urn, Sb is 231.2urn and Sn is 286.3urn). Using the end of the graphite tube coating and peak height measurement, HGA-40O standard temperature program