微肥中锌的双硫腙螯合微粒共振散射光谱分析  

Resonance Scattering Determination of Zinc in Microelement Fertilizer Based on the Formation of Dithizone Complex Particles

作　　者：赵长凤 周苏梅[2] 刘庆业[2] 

机构地区：[1]广西桂林市龙泉林场,桂林541004 [2]广西师范大学资源与环境科学系,桂林541004

出　　处：《分析测试技术与仪器》2005年第2期103-106,共4页Analysis and Testing Technology and Instruments

基　　金：广西高校自然科学基金资助项目(No.004013)

摘　　要：在pH9.0的NH3NH4Cl缓冲溶液中,Zn(Ⅱ)与双硫腙可形成能稳定存在的螯合物微粒,显示出共振散射效应.该微粒体系的最强共振散射峰在605nm处,锌的浓度在0.02～1.54μg/mL范围内与共振散射强度(I605nm)呈线性关系,检出限为0.008μg/mLZn.利用共振散射测量微肥中微量元素锌,方法简单、灵敏度高、重现性好,结果满意.In pH 9.0 NH_3-NH_4Cl buffer solution, Zn(Ⅱ) and dithizone combine to stable complex particles, which exhibit resonance scattering effect at 605 nm. The scattering intensity at 605 nm is linear to Zn concentration in the range of 0.02~1.54 μg/mL. The detection limit is 0.008 μg/mL Zn. This method has been applied to determination of Zn in microelement fertilizer, with sensitivity, simplicity, reproducibility and satisfactory results.

关 键 词：锌 双硫腙 螯合微粒 共振散射 

分 类 号：O657.32[理学—分析化学]