Method validation for determination of thallium by inductively coupled plasma mass spectrometry and monitoring of various foods in South Korea

Yeon Hee Kim; Wook Jin Ra; Solyi Cho; Shinai Choi; Bokyung Soh; Yongsung Joo; Kwang Won Lee

doi:10.3390/molecules26216729

Method validation for determination of thallium by inductively coupled plasma mass spectrometry and monitoring of various foods in South Korea

Yeon Hee Kim, Wook Jin Ra, Solyi Cho, Shinai Choi, Bokyung Soh, Yongsung Joo, Kwang Won Lee

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Thallium (Tl) is a rare element and one of the most harmful metals. This study validated an analytical method for determining Tl in foods by inductively coupled plasma mass spectrom-etry (ICP-MS) based on food matrices and calories. For six representative foods, the method’s correlation coefficient (R²) was above 0.999, and the method limit of detection (MLOD) was 0.0070– 0.0498 µg kg⁻¹, with accuracy ranging from 82.06% to 119.81% and precision within 10%. We investigated 304 various foods in the South Korean market, including agricultural, fishery, livestock, and processed foods. Tl above the MLOD level was detected in 148 samples and was less than 10 µg kg⁻¹ in 98% of the samples. Comparing the Tl concentrations among food groups revealed that fisheries and animal products had higher Tl contents than cereals and vegetables. Tl exposure via food intake did not exceed the health guidance level.

Original language	English
Article number	6729
Journal	Molecules
Volume	26
Issue number	21
DOIs	https://doi.org/10.3390/molecules26216729
Publication status	Published - 2021 Nov 1

Bibliographical note

Funding Information:
Acknowledgments: This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities.

Funding Information:
This research was funded by the Ministry of Food and Drug Safety, Republic of Korea (grant number 20162MFDS037) in 2020. This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Food contamination
ICP-MS
Risk assessment
Thallium
Trace element

ASJC Scopus subject areas

Analytical Chemistry
Chemistry (miscellaneous)
Molecular Medicine
Pharmaceutical Science
Drug Discovery
Physical and Theoretical Chemistry
Organic Chemistry

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10.3390/molecules26216729

Cite this

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title = "Method validation for determination of thallium by inductively coupled plasma mass spectrometry and monitoring of various foods in South Korea",

abstract = "Thallium (Tl) is a rare element and one of the most harmful metals. This study validated an analytical method for determining Tl in foods by inductively coupled plasma mass spectrom-etry (ICP-MS) based on food matrices and calories. For six representative foods, the method{\textquoteright}s correlation coefficient (R2) was above 0.999, and the method limit of detection (MLOD) was 0.0070– 0.0498 µg kg−1, with accuracy ranging from 82.06% to 119.81% and precision within 10%. We investigated 304 various foods in the South Korean market, including agricultural, fishery, livestock, and processed foods. Tl above the MLOD level was detected in 148 samples and was less than 10 µg kg−1 in 98% of the samples. Comparing the Tl concentrations among food groups revealed that fisheries and animal products had higher Tl contents than cereals and vegetables. Tl exposure via food intake did not exceed the health guidance level.",

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author = "Kim, {Yeon Hee} and Ra, {Wook Jin} and Solyi Cho and Shinai Choi and Bokyung Soh and Yongsung Joo and Lee, {Kwang Won}",

note = "Funding Information: Acknowledgments: This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities. Funding Information: This research was funded by the Ministry of Food and Drug Safety, Republic of Korea (grant number 20162MFDS037) in 2020. This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Kim, Yeon Hee

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AU - Soh, Bokyung

AU - Joo, Yongsung

AU - Lee, Kwang Won

N1 - Funding Information: Acknowledgments: This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities. Funding Information: This research was funded by the Ministry of Food and Drug Safety, Republic of Korea (grant number 20162MFDS037) in 2020. This work was supported by the School of Life Sciences and Biotechnology for BK21 PLUS, Korea University. The authors thank the Korea University–CJ Food Safety Center (Seoul, Korea) for providing the equipment and facilities. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

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N2 - Thallium (Tl) is a rare element and one of the most harmful metals. This study validated an analytical method for determining Tl in foods by inductively coupled plasma mass spectrom-etry (ICP-MS) based on food matrices and calories. For six representative foods, the method’s correlation coefficient (R2) was above 0.999, and the method limit of detection (MLOD) was 0.0070– 0.0498 µg kg−1, with accuracy ranging from 82.06% to 119.81% and precision within 10%. We investigated 304 various foods in the South Korean market, including agricultural, fishery, livestock, and processed foods. Tl above the MLOD level was detected in 148 samples and was less than 10 µg kg−1 in 98% of the samples. Comparing the Tl concentrations among food groups revealed that fisheries and animal products had higher Tl contents than cereals and vegetables. Tl exposure via food intake did not exceed the health guidance level.

AB - Thallium (Tl) is a rare element and one of the most harmful metals. This study validated an analytical method for determining Tl in foods by inductively coupled plasma mass spectrom-etry (ICP-MS) based on food matrices and calories. For six representative foods, the method’s correlation coefficient (R2) was above 0.999, and the method limit of detection (MLOD) was 0.0070– 0.0498 µg kg−1, with accuracy ranging from 82.06% to 119.81% and precision within 10%. We investigated 304 various foods in the South Korean market, including agricultural, fishery, livestock, and processed foods. Tl above the MLOD level was detected in 148 samples and was less than 10 µg kg−1 in 98% of the samples. Comparing the Tl concentrations among food groups revealed that fisheries and animal products had higher Tl contents than cereals and vegetables. Tl exposure via food intake did not exceed the health guidance level.

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KW - Trace element

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Method validation for determination of thallium by inductively coupled plasma mass spectrometry and monitoring of various foods in South Korea

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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