Determination of Pb in river water samples by inductively coupled plasma optical emission spectrometry after ultrasound-assisted co-precipitation with manganese dioxide |
| |
| Institution: | 1. Universidade Federal da Bahia, Instituto de Química, Campus Universitário de Ondina, Salvador, Bahia, 40170-290, Brazil;2. Universidades Salvador- Unifacs, Departamento de Engenharia e Arquitetura, Av. Cardeal da Silva 132, Salvador, Bahia, 40220-141, Brazil;3. Departamento de Ciências Exatas e da Terra, Universidade do Estado da Bahia, Estrada das Barreiras, s/n, Salvador, BA, 41195-001, Brazil;1. Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China;2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;1. GIGA Research (GIGA-I³, GIGA-cancer, and GIGA-Neuroscience), University of Liège, CHU, B36, B-4000 Liège, Belgium;2. Department of Medicine, Division of Hematology, University and CHU of Liège, Liège, Belgium;3. Department of Statistics, University of Liège, CHU, B-4000 Liège, Belgium;4. Department of Clinical Chemistry, CHU of Liège, CHU, B-4000 Liège, Belgium;5. Department of Analytical Pharmaceutical Chemistry, CIRM, Institute of Pharmacy, University of Liège, CHU, B36, B-4000 Liège, Belgium;1. State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China;2. School of Computer and Communication Engineering, University of Science and Technology Beijing, 100083, China;3. Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China;1. Insitute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China;2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;1. College of Information Science and Engineering, Northeastern University, Shenyang 110819, China;2. Institute of Engineering and Technology, Tie Ling Normal College, Tieling 112000, China |
| |
| Abstract: | A simple and efficient procedure for separation and pre-concentration using ultrasound-assisted co-precipitation with manganese dioxide was developed for Pb determination by inductively coupled plasma optical emission spectrometry (ICP OES). The optimization process was carried out using a two-level factorial design and a Doehlert matrix. Three variables (i.e. concentration of oxidizing solution—KMnO4, concentration of MnSO4 solution and time of ultrasonic irradiation) were used as factors in the optimization. The recoveries, based on the analysis of spiked samples, were between 90% and 105%, and the precision was ≤ 5%. The detection limit and quantification limit for Pb determination were 3.2 and 10.7 μg L? 1, respectively. The proposed method was applied for the determination of Pb in water samples from a river heavily polluted by industrial effluents. The recovery measured by analyte addition technique showed that the proposed pre-concentration method had good accuracy. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
