Ayata Sevda, Kaynak Ipek, Merdivan Melek
Faculty of Arts and Science, Chemistry Department, Dokuz Eylul University, 35160 Izmir, Turkey.
Environ Monit Assess. 2009 Jun;153(1-4):333-8. doi: 10.1007/s10661-008-0359-6. Epub 2008 May 29.
N,N-dibutyl-N1-benzoylthiourea (DBBT) impregnated onto a polymeric matrix, Amberlite XAD-16 was prepared. The separation and enrichment of Ag(I) from solution was investigated. Effective extraction conditions were optimized in column methods prior to determination by atomic absorption spectrometry. The optimum pH range for quantitative adsorption is 2-5. Quantitative recovery of Ag was achieved by stripping with 1 mol L(-1) thiourea in 1 mol L(-1) HCl. The sorption capacity of resin is 0.115 mmol Ag+ g(-1) resin. The relative standard deviation and detection limit was 3.1% for 1 microg Ag+ mL(-1) solution and 0.11 microg L(-1), respectively. The method was used for the determination of silver in geological water samples.
制备了负载在聚合物基质Amberlite XAD - 16上的N,N - 二丁基 - N1 - 苯甲酰基硫脲（DBBT）。研究了从溶液中分离和富集Ag(I)的方法。在采用原子吸收光谱法测定之前，通过柱法优化了有效的萃取条件。定量吸附的最佳pH范围为2至5。通过在1 mol L(-1) HCl中用1 mol L(-1)硫脲洗脱实现了Ag的定量回收。树脂的吸附容量为0.115 mmol Ag+ g(-1)树脂。对于1 μg Ag+ mL(-1)溶液，相对标准偏差为3.1%，检测限为0.11 μg L(-1)。该方法用于地质水样中银的测定。
