【正文】
d 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:Poly[[4vinylbenzyl(2hydroxyethyl) sulfide] cheelting resin。 ……