摘要
我们曾用自己合成的脂胺泡沫塑料(泡塑)富集原子吸收測定过岩矿中数种元素。本文就泡塑对微、痕量汞和铊的定量富集的酸度和介质,40余种共存离子的干扰,基体改进剂和仪器测量条件等进行了系统的研究,拟定了题示方法。
Microamounts and traces of TI(Ⅲ) and Hg(Ⅱ) in geological samples were concentrated on self-made esteramine foam in aqua regia with NH_4Br solution, and desorbed with thiourea solution. They were determined by flame or graphite furnace AAS with platform. But Tl(I) could not be quantitatively preconcentrated on the foam under the condition. The effect of different medium and acidity for the enrichment was discussed. The interference and the suppression of 40 common ions were given. The limits of detection for Hg and Tl were about 95 pg and 19 pg respectively.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第11期1000-1003,共4页
Chinese Journal of Analytical Chemistry
关键词
岩矿
泵
铊
原子吸收光谱
泡沫塑料
Esteramine foam
Platform graphite furnace AAS
Mercury
Thallium
