摘要
探讨了在氨性介质中子种绿A(C37H35N2O6S2Na) 染料与锡(IV) 反应形成离子缔合物的最佳条件,建立了测定痕量锡的新方法。子种绿A—Sn(IV) 缔合物的最大吸收波长位于630 nm ,表观摩尔吸光系数ε630 = 1.7×106 L/(mol·cm),锡浓度在0~80 ug/L 范围内遵守比耳定律。用于水样与罐头食品分析,结果令人满意。
The Tin reacts with alphazurine A (C\- 37 H\- 35 N\-2O\-6S\-2Na) in NH\-3 medium to form an ionic associate. The optimum condition influencing the reaction have been predicted. A new method for the determination of trace ions was developed. The alphazurine A Sn(IV) ion association complex exhibits maximum absorption at 630 nm with an apparent molar absorptivity of 1.7×106 L/(mol·cm). Beer's law is obeyed in the range of 0~80 μg/L for Sn(IV). The proposed method has been used for the determination of Sn(IV) in water and canned food with satisfactory results.
出处
《分析测试技术与仪器》
CAS
1999年第4期234-236,共3页
Analysis and Testing Technology and Instruments
基金
福建省科委三项科技费用资助