Speciation of inorganic selenium in environmental water samples by inductively coupled plasma optical emission spectrometry after preconcentration by using a mesoporous zirconia coating on coal cinder

2014 ◽  
Vol 37 (16) ◽  
pp. 2260-2267 ◽  
Author(s):  
Xiao-Shu Wei ◽  
Yi-Wei Wu ◽  
Li-Juan Han ◽  
Jing Guo ◽  
Hong-Li Sun
Keyword(s):  
Water Samples ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Environmental Water ◽  
Emission Spectrometry ◽  
Zirconia Coating ◽  
Inductively Coupled ◽  
Inorganic Selenium ◽  
Mesoporous Zirconia ◽  
Plasma Optical Emission Spectrometry

Determination of rare earth elements in waters by inductively coupled plasma optical emission spectrometry after preconcentration with 6-(2-thienyl)-2-pyridinecarboxaldehyde functionalized Amberlite XAD-4 resin

2013 ◽  
Vol 69 (2) ◽  
pp. 312-319 ◽  
Author(s):  
Cennet Karadaş ◽  
Derya Kara
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Water Samples ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Sample Volume ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry

A new method has been developed for the determination of rare earth elements (REEs) (Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in water samples based on preconcentration with a mini-column packed with 6-(2-thienyl)-2-pyridinecarboxaldehyde functionalized Amberlite XAD-4 resin prior to their determination using inductively coupled plasma optical emission spectrometry (ICP-OES). The optimum experimental parameters for preconcentration of REEs, such as pH of the sample, sample and eluent flow rates and sample volume, were investigated. The optimum pH values for quantitative (90–110%) sorption of the REE ions were between 6.0 and 8.0. The elution process was carried out using 2 mL of 1.0 mol L–1 HNO3 solution. Under the optimum conditions, detection limits between 0.032 and 0.963 μg L−1 for a 10 mL sample volume and 0.006 and 0.193 μg L−1 for a 50 mL sample volume were determined. The proposed method was successfully applied to the determination of REEs in water samples with recoveries in the range of 90.1–110.5%.

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