Solution Cathode Glow Discharge-Atomic Emission Spectroscopy Coupled With Hydride Generation for Detecting Trace Mercury and Tin in Water

Pei-chao ZHENG; Ran-ning LIU; Jin-mei WANG; Chu-hui FENG; Yu-tong HE; Mei-ni WU; Yu-xin HE

doi:10.3964/j.issn.1000-0593(2022)04-1139-05

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 4 >Page 1139 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 4, 1139 (2022)

Solution Cathode Glow Discharge-Atomic Emission Spectroscopy Coupled With Hydride Generation for Detecting Trace Mercury and Tin in Water

Pei-chao ZHENG^*, Ran-ning LIU, Jin-mei WANG, Chu-hui FENG, Yu-tong HE, Mei-ni WU, and Yu-xin HE

Author Affiliations

Chongqing Municipal Level Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

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DOI: 10.3964/j.issn.1000-0593(2022)04-1139-05 Cite this Article

Pei-chao ZHENG, Ran-ning LIU, Jin-mei WANG, Chu-hui FENG, Yu-tong HE, Mei-ni WU, Yu-xin HE. Solution Cathode Glow Discharge-Atomic Emission Spectroscopy Coupled With Hydride Generation for Detecting Trace Mercury and Tin in Water[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1139 Copy Citation Text

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Fig. 1. Schematic diagram of hydride generation-solution cathode glow discharge (HG-SCGD) experimental device

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Fig. 2. Characteristic emission lines of (a) Hg and (b) Sn

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Fig. 3. (a) Influence of concentration of NaBH4, (b) solution pH and (c) argon flow rate on the signal intensity of Sn and Hg

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Fig. 4. Influence of coexisting ions on the determination of (a) Sn and (b) Hg

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元素	R²	RSD(%, n=10)	LoD/(μg·L^-1)
Sn	0.9963	2.92	6.85
Hg	0.9964	1.59	1.05

Table 1. Calculation of detection limit of Sn and Hg

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方法	LoD/(μg·L^-1)		文献
方法	Sn	Hg	文献
PVG-SCGD-AES	-	1.6	[6]
SCGD-AES	1 300	7.0	[12]
CVG-ICP-OES	-	13	[13]
DBD-AAS	10.6	0.35	[14]
CVG-AFS	0.1	0.1	[15]
HG-SCGD	6.85	1.05	本方法

Table 2. Comparison of the detection limits of Sn and Hg with different excitation sources

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元素	水样种类	添加浓度/ (mg·L^-1)	测量浓度/ (mg·L^-1)	回收率/%	测量相对误差/%
	白云水库	20	19.83	99.16	5.20
Sn	红岩水库	25	25.70	102.78	2.97
	九曲河	30	30.92	103.08	6.76
	白云水库	1	1.01	100.88	1.34
Hg	红岩水库	1.5	1.52	101.34	2.36
	九曲河	0.5	0.49	97.77	1.06

Table 3. Calculation of recovery rate of actual water sample

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