摘要
非离子表面活性剂的水溶液在温度升高达到其浊点时会形成胶束相析出。文章研究了利用其浊点使待测离子的络合物富集在胶束内一起析出 ,进行析相萃取分离富集后 ,应用火焰原子吸收光谱法测定矿样中锌的新方法 ;着重讨论了采用TritonX 10 0做析相剂、正辛醇降低浊点和析出相的密度以及络合剂的选择、酸度及振荡次数的影响等析相萃取条件。方法检出限为 0 0 0 5 μg·mL-1。用于岩矿中锌的分析测定 。
Non-ion surface active agent can be separated from its solution of water by heating to its cloud point. A new method for the determination of zinc in mineral samples by flame atomic absorption spectrophotometer after phase separation and extraction making use of its cloud point was studied in this paper. The conditions of phase separation and extraction such as using Triton X-100 as phase separation agent, and octanol to drop the cloud point, and the influence of acidity and the number of times for oscillating were discussed. The detection limit was 0.005 mug(.)mL(-1). This method has been applied to the determination of zinc in ores with satisfactory results.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第3期363-365,共3页
Spectroscopy and Spectral Analysis
基金
中国地质大学学术交流基金资助
