Alothman Zeid A, Al-Shaalan Nora H, Habila Mohamed A, Unsal Yunus E, Tuzen Mustafa, Soylak Mustafa
Advanced Materials Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia.
Environ Monit Assess. 2015 Feb;187(2):9. doi: 10.1007/s10661-014-4160-4. Epub 2015 Jan 25.
A dispersive liquid-liquid microextraction procedure for lead(II) as its 5-(4-dimethylaminobenzylidene) rhodanine complex has been established prior to its microsampling flame atomic absorption spectrometric determination. The influences of various analytical parameters including pH, solvent type and volume, dispersive solvent type and volume, 5-(4-dimethylaminobenzylidene) rhodanine amount, salt effect, and centrifugation time and speed were investigated. The effects of certain alkali, alkaline earth, and transition metal ions on the quantitative extraction of lead(II) were also studied. Quantitative recoveries were obtained at pH 6. The enrichment factor was calculated as 125. The detection limit for lead is 1.1 μg/L. The accuracy of the method was tested with the additions recovery test and analysis of the standard reference materials (SPS-WW2 waste water, NIST SRM 1515 apple leaves, and TMDA-51.3 fortified water). Applications of the present procedure were tested by analyzing water and food samples.
在进行微取样火焰原子吸收光谱测定之前，建立了一种用于测定铅（II）的分散液液微萃取方法，铅（II）以其5-（4-二甲基氨基亚苄基）罗丹宁配合物的形式存在。研究了各种分析参数的影响，包括pH值、溶剂类型和体积、分散溶剂类型和体积、5-（4-二甲基氨基亚苄基）罗丹宁的用量、盐效应以及离心时间和速度。还研究了某些碱金属、碱土金属和过渡金属离子对铅（II）定量萃取的影响。在pH 6时获得了定量回收率。富集因子计算为125。铅的检测限为1.1μg/L。通过加标回收率试验和标准参考物质（SPS-WW2废水、NIST SRM 1515苹果叶和TMDA-51.3强化水）的分析对该方法的准确性进行了测试。通过分析水和食品样品对本方法的应用进行了测试。
