摘要
研究了在羟丙基-β-环糊精（HP-β-CD）和曲拉通X-100（TritonX-100）存在下，NaAc-HAc介质中，以水杨基荧光酮（SAF）作为荧光试剂，用荧光猝灭法测定微量铁的新方法。络合物的最大激发波长和发射波长分别为365nm和530nm。25mL溶液中，Fe^3＋含量在0．034-3．0μg范围内符合线性关系，方法检出限为1.36μg／L。干扰离子较少，已用于管网水中铁的测定，相对标准偏差为1.1％，标准加入回收率为98.0％-101.2％。
A new fluorescence quenching method for the determination of micro iron with salicyfluor-one（SAF） in NaAc-HAc medium and in the presence of TritonX-100 and hydroxypropyl-β-cyclodex-trin（HP-β-CD） has been described. The excitation and emission wavelengths were 365 nm and 530 nm, respectively. The linear range was 0.034-3.0μg/25 mL. The detection limit was 1.36μg/L, and theinterfering ions were less . The method has been applied to the determination of micro iron in tap water with recovery of 98.0%-101.2% and relative standard deviation of 1.1%.
出处
《冶金分析》
CAS
CSCD
北大核心
2008年第4期58-60,共3页
Metallurgical Analysis
