文摘
ultra-trace测定钴离子通过预选后ET-AAS pyridine-functionalized磁性纳米颗粒
作者(年代):Y。Ghorbani, A.Rahimi提出了一种研究磁性纳米颗粒的应用(基于)准备fromFe3O4 functionalizedwith吡啶作为固相萃取的跟踪数量ofCo anadsorbent (II)离子。吡啶的主席表面固定化theMNPsbycovalent bondingof isonicotinamide。可以readilyseparated modifiedMNPs弗罗曼水溶液byapplyingan externalmagnetic字段。pH值的影响,functionalizedMNPs的数量,类型和数量的洗脱液,解吸时间提取efficiencywere优化。ofCo量(II)原文ChemXpress 5 (3), 098 - 102, (2014) ISSN(打印):2320 AA1967 ISSN(在线):2320 1975 AA介绍钴是一种自然元素在环境和使用做出超级合金(高温合金,维持他们的力量接近theirmeltingpoints)和inpigmentmanufacture。它可以受益或harmhuman健康。一般来说,有毒重金属离子,降解,倾向于积累重要的人体器官,它们actprogressivelyover longperiodthroughfoodchains。测定环境样品中微量离子heavymetal receivedincreasingattention。一些微量元素对人至关重要,其isonlyafewmilligrams日常需求。然而,如果摄入inhighlevels, canbeharmful tohumanhealth。因此,基本成分是至关重要的,确保食品质量[1]。是一个重要的微量元素钴inmanybodilyfunctions有重要的作用。 It is toxic in was then determined usingElectrothermalAtomicAbsorption Spectroscopy(ETAAS).Under the optimized conditions, the detectionlimit and preconcentration factor are 0.11 ìg L-1 and 200, respectively, and the relative standard deviation (at 10 ìgL-1; for n=5) is 3.5%. Themethod had a linear analytical range from0.10 to 80 ìg L-1 andwas applied to determineCo (II) inwater samples.
