一种新型吸附剂在痕量重金属分析中的应用

The application of a new sorbent--dibenzo-18 crown-6 cross-linked Schiff chitosan in the determination of trace solheavy metal with graphite furnace atomic absorption spectrome-try

以二苯并18-冠-6交联席夫碱型壳聚糖作为新型吸附剂,用石墨炉原子吸收分光光度法测定了经过滤处理后的燃 煤烟气中痕量铬、镉和铅的含量。经过滤处理后的燃煤烟气含铬1.42μg/m3,其中三价铬占54.20％,为O.77μg/m3,镉 0.256μg/m3,铅5.30μg/m3。

The concentration of trace chromium , cadmium and lead in filtered flue gas was determined with dibenzo-18 crown-6 cross-linked Schiff chitosan by graphite furnace atomic absorption spectrometry. The content of Cr was 1. 42ug/m3 , in which Cr(III) amounted to 54. 20%. The content of Cd was 0. 256ug/m3 , Pb , 5.30ug/m3.