Study on the Analysis Total As in Bentonite With Microwave Plasma Atomic Emission Spectrometry

Ai-yang LI; Liang FU

doi:10.3964/j.issn.1000-0593(2021)12-3671-05

Journals >Spectroscopy and Spectral Analysis >Volume 41 >Issue 12 >Page 3671 > Article

Spectroscopy and Spectral Analysis
Vol. 41, Issue 12, 3671 (2021)

Study on the Analysis Total As in Bentonite With Microwave Plasma Atomic Emission Spectrometry

Ai-yang LI^1、* and Liang FU^{2、2; *;}

Author Affiliations

¹1. College of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China

²2. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China

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DOI: 10.3964/j.issn.1000-0593(2021)12-3671-05 Cite this Article

Ai-yang LI, Liang FU. Study on the Analysis Total As in Bentonite With Microwave Plasma Atomic Emission Spectrometry[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3671 Copy Citation Text

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Fig. 1. Multimode sample introduction system (MSIS) setup for hydride generation

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Fig. 2. Emission spectra of As with different concentrations at 188.979 nm

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Fig. 3. Effect of viewing position (a) and nebulizer gas flow (b) on signal intensity of As

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Fig. 4. The fast linear interference correction (FLIC) model of As (188.979 nm)

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Wavelength	Viewing position	Nebulizer gas flow /(L·min^-1)	Spectral interferences	Sensitivity /(L·μg^-1)
As: 193.695 nm	10	0.45	Fe: 193.663 nm	62.5
As: 234.984 nm	10	0.45	Fe: 234.830 nm, Co: 234.737 nm; Be: 234.861 nm	58.2
As: 188.979 nm	10	0.45	Interference-free	46.9

Table 1. Optimization of MP-AES working condition

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Sample	Certified			Determined
Sample	Mean/ (μg·g^-1)	SD/ (μg·g^-1)	RSD/%	Mean/ (μg·g^-1)	SD/ (μg·g^-1)	RSD/%
GBW07104	2.10	0.50	23.8	2.33	0.05	2.14
GBW07107	1.40	0.40	28.6	1.64	0.03	1.83
GBW07109	6.27	0.45	7.18	6.51	0.15	2.30
GBW07110	5.96	0.89	14.9	5.72	0.16	2.80

Table 2. Results obtained for analytes in standard reference materials using MP-AES (μg·g^-1, n=6)

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Sample ID	MP-AES	GB method	Sample ID	MP-AES	GB method	Sample ID	MP-AES	GB method
1	5.08±0.16	5.15±0.10	5	9.05±0.40	9.16±0.45	9	10.4±0.37	10.2±0.41
2	9.72±0.30	9.84±0.35	6	6.23±0.27	6.38±0.20	10	8.76±0.28	8.55±0.30
3	6.51±0.19	6.40±0.22	7	3.51±0.12	3.62±0.09	11	5.39±0.16	5.32±0.18
4	12.6±0.45	13.1±0.37	8	4.83±0.15	4.69±0.43	12	7.36±0.23	7.45±0.45

Table 3. Analysis results of As content in bentonite samples (mg·kg^-1, n=6)

Ai-yang LI, Liang FU. Study on the Analysis Total As in Bentonite With Microwave Plasma Atomic Emission Spectrometry[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3671

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