Ligandless-ultrasound-assisted emulsification-microextraction combined with inductively coupled plasma-optical emission spectrometry for simultaneous determination of heavy metals in water samples

2012 ◽  
Vol 4 (1) ◽  
pp. 236-241 ◽  
Author(s):  
Hassan Sereshti ◽  
Vahid Khojeh ◽  
Maryam Karimi ◽  
Soheila Samadi
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry ◽  
Ultrasound Assisted ◽  
Emulsification Microextraction

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%.

Sign in / Sign up

Export Citation Format

Share Document