Determination of Rare Earth Elements in Pore Water Samples of Marine Sediments Using an Offline Preconcentration Method

2021 ◽  
Author(s):  
Hongna Liu ◽  
Li Li ◽  
Xiaojing Wang ◽  
Yijun Ren ◽  
Xuefa Shi
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Pore Water ◽  
Marine Sediments ◽  
Water Samples ◽  
Preconcentration Method

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%.

scholarly journals Voltammetric and Spectroscopic Determination of Rare Earth Elements in Fresh and Surface Water Samples

Environments ◽  
2018 ◽  
Vol 5 (10) ◽  
pp. 112 ◽  
Author(s):  
Martin Makombe ◽  
Charlton van der Horst ◽  
Bongiwe Silwana ◽  
Emmanuel Iwuoha ◽  
Vernon Somerset
Keyword(s):  
Rare Earth ◽  
Detection Limit ◽  
Rare Earth Elements ◽  
Water Samples ◽  
Spectroscopic Method ◽  
Environmental Water ◽  
Green Technology ◽  
Environmental Water Samples ◽  
Icp Oes

The increasing demand for rare earth elements in green technology, electronic components, petroleum refining, and agricultural activities has resulted in their scattering and accumulation in the environment. This study determined cerium, lanthanum and praseodymium in environmental water samples with the help of adsorptive differential pulse stripping voltammetry (AdDPSV) and inductive coupled plasma-optical emission spectroscopy (ICP-OES). A comparison of the results of these two analytical techniques was also made. The accuracy and precision of the methods were evaluated by spiking water samples with a known amount of REEs. The detection limit obtained for the stripping analysis was 0.10 μg/L for Ce(III), and 2.10 μg/L for combined La(III) and Pr(III). The spectroscopic method of determination by ICP-OES was applied to the same samples to evaluate the effectiveness of the voltammetry procedure. The ICP-OES detection limit obtained was 2.45, 3.12 and 3.90 μg/L for Ce(III), La(III) and Pr(III), respectively. The results obtained from the two techniques showed low detection limits in voltammetry; the ICP-OES method achieved better simultaneous analysis. This sensor has been successfully applied for the determination of cerium, lanthanum, and praseodymium in environmental water samples, offering good results.

scholarly journals Preconcentration and determination of beryllium and rare earth elements in small volumes of marine pore-water

2021 ◽  
Author(s):  
Kai Deng ◽  
Jianghui (JD) Du ◽  
Jörg Rickli ◽  
Tim Jesper Suhrhoff ◽  
Derek Vance
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Pore Water

scholarly journals Simultaneous determination of trace rare-earth elements in simulated water samples using ICP-OES with TODGA extraction/back-extraction

PLoS ONE ◽  
2017 ◽  
Vol 12 (9) ◽  
pp. e0185302 ◽  
Author(s):  
FuKai Li ◽  
AiJun Gong ◽  
LiNa Qiu ◽  
WeiWei Zhang ◽  
JingRui Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Simultaneous Determination ◽  
Water Samples ◽  
Back Extraction ◽  
Icp Oes

The fluorimetric determination of cerium and terbium

1989 ◽  
Vol 54 (3) ◽  
pp. 616-621 ◽  
Author(s):  
Záviš Holzbecher
Keyword(s):  
Rare Earth ◽  
Detection Limit ◽  
Rare Earth Elements ◽  
Fluorimetric Determination ◽  
Fluorescence Maximum ◽  
Relative Standard ◽  
And Shifts ◽  
Hcl Medium ◽  
Fold Excess

It has been found that phosphoric acid decreases the first excitation maximum of Ce(III) at 256 nm, increases the second excitation maximum at 297 nm and shifts the fluorescence maximum from 350 to 346 nm. Under optimum conditions, with λexc = 297 nm and λem = 346 nm, Ce(III) can be determined fluorimetrically with a detection limit of 1.2 ng ml-1 in 12M-H3PO4 medium. No interference was observed from a 20-200 fold excess of HCl, H2SO4, Na, K, NH4+, Al and the rare earth elements. HNO3 interferes and Ce(IV) and Fe(III) interfere strongly. It follows from the stereofluorograms of Ce and Tb that the spectra of the two elements are practically independent. The detection limit for Tb(III) in 0.02-2.5M-H2SO4 medium for λexc = 222 nm and λem = 494 nm is 33 ng ml-1. No interference was observed from a 5-20 fold excess of Al3+ and the other rare earth elements. The determination is slightly less sensitive in H3PO4 or HCl medium. The relative standard deviation of the measurement for 10 ng ml-1 Ce(III) or 50 ng ml-1 Tb(III) is about 3%.

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