Detection of lead chrome green in Tieguanyin tea by laser-induced breakdown spectroscopy

Li, Jingwen; Wang, Yanting; Yao, Lide; Wang, Cong; Shen, Li

doi:10.1039/d3ja00049d

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Laser-induced breakdown spectroscopy (LIBS) is a spectroscopic technology based on atomic emission, with the advantages of fast analysis speed, in situ real-time detection, simple preparation, and multi-elemental analysis, and is widely used in coal analysis, 10 metallurgy, 11 water environment detection, 12 soil testing, 13 food safety, 14,15 biomedical, 16 nuclear 17 and other fields. Meanwhile, more and more researchers applied LIBS with machine learning methods to medication screening.…”

Section: Introductionmentioning

confidence: 99%

Traceability of cold medications with similar ingredients based on laser-induced breakdown spectroscopy

Yao,

Li,

Liu

et al. 2024

J. Anal. At. Spectrom.

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Section: Introductionmentioning

confidence: 99%

Traceability of cold medications with similar ingredients based on laser-induced breakdown spectroscopy

Yao,

Li,

Liu

et al. 2024

J. Anal. At. Spectrom.

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“…Of course, it is also widely used in the field of tea detection. For example, CaO and CN molecular lines were applied to detection of lead chrome green in Tieguanyin tea combined with principal components analysis (PCA) and LIBS [12]. Lu et al [13] studied the types and content differences of elements in green tea of different seasons, simulated the CN molecular bands observed in the experiment, and obtained the vibration temperature and rota-tion temperature of the CN molecule.…”

Section: Introductionmentioning

confidence: 99%

Study on the spectra of Tieguanyin tea and ash by laser-induced breakdown spectroscopy

Li,

Yao,

Shen

et al. 2024

Laser Phys.

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Tea ash is the inorganic residue of tea after a series of chemical and physical reactions under high temperature environment. The compositions of tea and ash are very different. In addition, the compositions of ash are closely related to the quality of tea. In this work, the compositions of Tieguanyin tea and ash were analyzed by laser-induced breakdown spectroscopy (LIBS), and the differences of elements in tea and ash were analyzed qualitatively. Tea contains the main elements, such as Ca, Na, Mg, and K, trace elements Fe, Cu, Zn, Mn and Sr, and other metallic elements Al, Li and Ba. Comparing the atomic and ionic lines in LIBS spectra of tea and ash, it was found that the spectral line intensities of metallic elements, i.e. Ca, Al, Mn, Mg, K, Na, Li, in the ash were significantly enhanced. In addition, there were CN, C2 and CaO molecular lines in the LIBS spectra of tea, but only CaO free radical was detected in the LIBS spectra of ash. The reason of the differences between the molecular lines of LIBS spectra of tea and ash was analyzed. This work is to determine the material compositions of tea and ash, which provides a basic foundation for the quality judgment of tea and a new idea for the enrichment detection of metallic elements.

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Safety Assessment and Contaminants Detection in Different types of Tea and Tea products

Akhtar,

Zahir,

Naeem

et al. 2024

RAS

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Detection of lead chrome green in Tieguanyin tea by laser-induced breakdown spectroscopy

Abstract: In this work, laser-induced breakdown spectroscopy (LIBS) was used to analyse the elemental composition of Tieguanyin tea and LCG. It was found that Fe, Ca and Mg were contained in...

Cited by 3 publications

References 29 publications

Traceability of cold medications with similar ingredients based on laser-induced breakdown spectroscopy

Traceability of cold medications with similar ingredients based on laser-induced breakdown spectroscopy

Study on the spectra of Tieguanyin tea and ash by laser-induced breakdown spectroscopy

Safety Assessment and Contaminants Detection in Different types of Tea and Tea products

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