Determination of Rare Earth Elements in High-Salt Water by ICP-MS After Pre-Concentration Using a Chelating Resin

Zhao-zhou ZHU; Xin-xin YANG; Jun LI; Hui-jun HE; Zi-jing ZHANG; Wen-rui YAN

doi:10.3964/j.issn.1000-0593(2022)06-1862-05

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 6 >Page 1862 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 6, 1862 (2022)

Determination of Rare Earth Elements in High-Salt Water by ICP-MS After Pre-Concentration Using a Chelating Resin

Zhao-zhou ZHU^{1、1; *;}, Xin-xin YANG^1、1;, Jun LI^1、1;, Hui-jun HE^2、2;, Zi-jing ZHANG^1、1;, and Wen-rui YAN^1、1;

Author Affiliations

¹1. Tianjin Key Laboratory of Water Resource and Water Environment, Tianjin Normal University, Tianjin 300387, China

²2. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China

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DOI: 10.3964/j.issn.1000-0593(2022)06-1862-05 Cite this Article

Zhao-zhou ZHU, Xin-xin YANG, Jun LI, Hui-jun HE, Zi-jing ZHANG, Wen-rui YAN. Determination of Rare Earth Elements in High-Salt Water by ICP-MS After Pre-Concentration Using a Chelating Resin[J]. Spectroscopy and Spectral Analysis, 2022, 42(6): 1862 Copy Citation Text

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Fig. 1. Diagram of the preconcentration system

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Effect of the UV/H2O2 Oxidation on the recovery of REEs

Fig. 2. Effect of the UV/H₂O₂ Oxidation on the recovery of REEs

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Fig. 3. Recovery of REEs at the pH 2~10 range

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Parameters	Operating conditions
RF power	1 100 W
Plasma gas(Ar) flow	13.5 L·min^-1
Auxiliary Gas flow	0.75 L·min^-1
Nebulizer Gas flow	0.8 L·min^-1
Lens voltage	6 V
Scan mode	Peak Hopping
Sweeps/Reading	20
Reading/Replicates	1
Replicates	3
Dwell time	50 ms

Table 1. Operation conditions of an ICP-MS instrument (Elan 9000)

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Element	Blank/ (ng·L^-1) (n=10)	DL/ (ng·L^-1) (n=10)	Recovery /%	RSD/% (n=5)
Y	7.30	1.16	101	1.98
La	18.2	6.26	101	2.39
Ce	22.0	12.9	101	4.02
Pr	1.69	1.27	101	3.06
Nd	9.49	5.40	100	2.43
Sm	3.53	2.50	98	2.22
Eu	1.22	1.68	97	2.73
Gd	3.30	1.88	97	2.41
Tb	0.64	3.34	100	2.76
Dy	6.19	2.12	99	1.98
Ho	2.31	1.65	98	2.57
Er	2.49	3.49	97	3.62
Tm	0.34	0.34	97	2.19
Yb	2.75	3.27	97	2.06
Lu	2.63	1.58	98	2.63

Table 2. Procedural Blank, detection limit, recovery and relative standard deviation

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Element	Costal water /(ng·L^-1)	Estuary water /(ng·L^-1)	Saline lake water /(ng·L^-1)	Element	Costal water /(ng·L^-1)	Estuary water /(ng·L^-1)	Saline lake water /(ng·L^-1)
Salinity	28.1‰	6.1‰	7.6‰	Eu	0.27±0.02	0.90±0.11	0.53±0.04
DOC	3.5 mg·L^-1	16.5 mg·L^-1	10.3 mg·L^-1	Gd	2.37±0.22	4.78±0.42	1.93±0.15
Y	17.84±1.06	32.23±3.01	12.10±1.15	Tb	0.29±0.02	0.61±0.07	0.28±0.02
La	23.77±2.20	31.46±2.02	18.42±1.67	Dy	1.97±0.11	4.00±0.41	1.29±0.08
Ce	9.69±0.94	47.69±9.24	40.29±3.92	Ho	0.54±0.04	0.93±0.10	0.26±0.02
Pr	1.29±0.13	3.80±0.33	2.07±0.18	Er	2.68±0.19	3.31±0.39	2.59±0.23
Nd	16.51±1.34	25.68±2.50	22.40±1.90	Yb	2.31±0.15	4.70±0.65	2.50±0.21
Sm	1.13±0.09	3.49±0.29	1.99±0.17	Lu	0.44±0.03	1.14±0.13	0.64±0.05

Table 3. Determination results of samples

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