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以火焰原子吸收光谱法(FAAS)为检测手段,研究了本实验室合成的顺丁烯二酸-苯乙烯共聚物微球对Cd(Ⅱ)的静态吸附性能,考察了影响吸附率的相关因素以及不同浓度的各种解吸剂对Cd(Ⅱ)的解吸效果。溶液pH为6、吸附时间为2h时吸附基本达到平衡,吸附率可达到95%以上。以3 mol/L的HCl溶液作为解吸剂对Cd(Ⅱ)进行洗脱,解吸率可达到99%以上。在最佳吸附条件下,吸附量可达到32.2 mg/g,检出限为(3σ9)6.6μg/L;相对标准偏差为2.7%。
The flame retardant atomic absorption spectrometry (FAAS) was used as a detection method to study the static adsorption properties of Cd (Ⅱ) on maleic acid-styrene copolymer microspheres synthesized in our laboratory. The factors affecting the adsorption rate As well as desorption of Cd (Ⅱ) by different desorption agents. The solution pH was 6, the adsorption time was 2h adsorption reached the balance, the adsorption rate can reach more than 95%. Cd (Ⅱ) was eluted with 3 mol / L HCl solution as desorbent, the desorption rate could reach over 99%. Under the optimal adsorption conditions, the adsorption capacity reached 32.2 mg / g with the detection limit of (3σ9) 6.6 μg / L and the relative standard deviation of 2.7%.