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小四號(hào)Times New Roman Abstract:A method was developed for the determination of trace gold by atomic absorption spectrometry by separation and preconcentration with the newly synthesized poly [ 4 – vinylbenzyl ( 2 – hydroxyethyl ) sulfide ] cheelting resin…. 五號(hào)Times New Roman段落左右各縮進(jìn)兩字 Key words:Pol