Determination of manganese in human urine by dispersive ionic liquid-liquid microextraction-graphite furnace atomic absorption spectrometry
Yong Wang, Yingying Gu, Ruodan Fang, Yong Mei
Published 2020-03-20
Cite as Chin Ind Hyg Occup Dis, 2020, 38(3): 216-218. DOI: 10.3760/cma.j.cn121094-20190718-00313
Abstract
ObjectiveTo establish a method for the determination of manganese in urine with graphite furnace atomic absorption spectrometry (GFAAS) by using ionic liquid microextraction.
MethodsThe ethanol, 8-hydroxyquinoline and ionic liquid 1-octyl-3-methyl-imidazolium hexafluorophosphate were used as dispersive solvent, chelating agent and extraction solvent respectively, for the preconcentration of manganese. After the optimal extraction conditions were optimized by single factor rotations, evaluate the performance indicators such as methodological precision, accuracy, and detection limit.
ResultsThe linear range of urine manganese was 0.0-1.6 μg/L, and the correlation coefficient of standard curve line was 0.992, the detection limit was 0.03 μg/L, the recovery of sample spiked was 84.90%-96.50%, and the relative standard deviation was 0.36%-1.84%.
ConclusionThe method has the advantages of low detection limit, high recovery rate and high sensitivity. It is suitable for the determination of manganese in urine samples from occupational exposure populations and the general population.
Key words:
Ionic liquids; Manganese; Urine; Spectrometry; Dispersive liquid-liquid microextraction
Contributor Information
Yong Wang
School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
Tianyou Hospital Affiliated to Wuhan University of Science and Technology, Wuhan 430064, China
Yingying Gu
School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
Ruodan Fang
School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
Yong Mei
School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China