Investigation of Lithium Analysis in Geothermal Water by Inductively Coupled Plasma Optical Emission Spectrometry

Chen-ling ZHANG; Na JIA; Jia LIU; Bing-bing LIU; Mei HAN

doi:10.3964/j.issn.1000-0593(2021)12-3876-05

Spectroscopy and Spectral Analysis, Volume. 41, Issue 12, 3876(2021)

Investigation of Lithium Analysis in Geothermal Water by Inductively Coupled Plasma Optical Emission Spectrometry

Chen-ling ZHANG^*, Na JIA^*;, Jia LIU, Bing-bing LIU, and Mei HAN

Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Key Laboratory of Groundwater Sciences and Engineering, Ministry of Nature Resources, Shijiazhuang 050061, China

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Figures & Tables(8)

Fig. 1. Effects of co-existing ions on lithium determination

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Fig. 2. Influence of atomizer flow

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Fig. 3. Influence of Na⁺ addition on radial determination

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Fig. 4. Influence of Na⁺ addition on axial determination

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Table 1. Composition of geothermal water samples
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Table 1. Composition of geothermal water samples
浓度 1^# 2^# 3^#
Na⁺/(mg·L^-1) 516.4 968.0 1 778
K⁺/(mg·L^-1) 19.06 53.37 124.65
Ca²⁺/(mg·L^-1) 84.30 643.9 558.4
Mg²⁺/(mg·L^-1) 24.17 24.44 46.03

Table 2. Determination limits
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Table 2. Determination limits
观测方式部分基体匹配无基体匹配
仪器检出限/
(μg·L^-1) 测定下限/
(μg·L^-1) 仪器检出限/
(μg·L^-1) 测定下限/
(μg·L^-1)
轴向 0.20 0.68 0.11 0.38
径向 0.41 1.36 0.39 1.30

Table 3. Dilution test

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Table 3. Dilution test

样品	1^#		2^#		3^#
样品	轴向/ (mg·L^-1)	径向/ (mg·L^-1)	轴向/ (mg·L^-1)	径向/ (mg·L^-1)	轴向/ (mg·L^-1)	径向/ (mg·L^-1)
原样浓度	0.412	0.411	1.995	1.999	1.071	1.096
稀释1倍样品浓度	0.204	0.204	1.012	0.987	0.542	0.537
稀释试验系数	101.0	100.7	98.6	101.3	98.8	102.0

Table 4. Analyte addition test of real samples

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Table 4. Analyte addition test of real samples

序号	测试方法	本底值/(mg·L^-1)	加标量/(mg·L^-1)	检测量/(mg·L^-1)	回收率/%
	ICP-OES轴向	0.412±0.005		0.928±0.007	103.2
1^#	ICP-OES径向	0.411±0.004	0.500	0.939±0.021	105.6
	ICP-MS	0.397±0.005		0.895±0.014	99.6
	ICP-OES轴向	1.995±0.013		3.950±0.004	97.8
2^#	ICP-OES径向	1.999±0.010	2.000	3.929±0.053	96.5
	ICP-MS	1.896±0.018		3.910±0.048	100.7
	ICP-OES轴向	1.071±0.004		2.041±0.014	97.0
3^#	ICP-OES径向	1.096±0.011	1.000	2.063±0.013	96.7
	ICP-MS	1.035±0.012		2.018±0.020	98.3

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Chen-ling ZHANG, Na JIA, Jia LIU, Bing-bing LIU, Mei HAN. Investigation of Lithium Analysis in Geothermal Water by Inductively Coupled Plasma Optical Emission Spectrometry[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3876

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