摘要
研究了质子化壳聚糖吸附钼 的性能和机理。在弱酸性 (pH 4 .5的NaAc HAc缓冲溶液 )介质中 ,钼 以MoO2 -4形式吸附在质子化的壳聚糖上 ,吸附反应在 2 0min内可达到平衡 ,饱和吸附容量为 18.4mg g。详细研究了影响吸附过程的有关参数 (如介质酸度、吸附速率、吸附容量 )和脱附最佳条件。方法用于水体中微量钼 的富集测定 。
Molybdenum?, as MoO 2- 4, was enriched on protonated chitosan in weak acidic medium and then eluted with a small volume of 1 mol/L ammonia solution(pH 10). The collection mechanism and optimum conditions for the spectrophotometric determination of Mo? have been studied. The method was used to the determination of trace molybdenum? in water with satisfactory result.
出处
《分析化学》
SCIE
CAS
CSCD
北大核心
2003年第1期79-82,共4页
Chinese Journal of Analytical Chemistry