High sensitive detection of Cd, Hg, Pb and Cr in rice based on LA-MPT-OES with optimized excitation regions by two-dimensional characterization of plasma plume

Zeng, Lingwei; Rao, Yu; Kong, Weiheng; Wu, Mengfan; Ren, Wenxin; Li, Shijie; Dai, Jianxiong; Duan, Yixiang

doi:10.1016/j.foodchem.2024.139850

Food Chemistry

2024

DOI: 10.1016/j.foodchem.2024.139850

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High sensitive detection of Cd, Hg, Pb and Cr in rice based on LA-MPT-OES with optimized excitation regions by two-dimensional characterization of plasma plume

Lingwei Zeng,

Yu Rao,

Weiheng Kong

et al.

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EDTA‐Assisted MPT‐MS for Trace Analysis of Heavy Metals in Fireworks

Zhao,

Huang,

Yang

et al. 2024

J Mass Spectrom

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A novel method was developed for the rapid detection of heavy metals in firework solutions with high sensitivity and minimal pretreatment by enriching them with ethylenediaminetetraacetic acid (EDTA) reagent and analyzing them using microwave plasma torch mass spectrometry (MPT‐MS). Quantitative results showed that the limits of detection and quantification for heavy metals (Pb, Ba, Sr, and Ag) ranged from 0.05 to 0.25 and 0.38 to 0.71 μg·L−1, respectively. The linear dynamic ranges covered at least two orders of magnitude, with correlation coefficients exceeding 0.99. Fireworks from five regions in China were also analyzed quantitatively, detecting heavy metals including Pb, Ba, Sr, and Ag, with recovery rates ranging from 87.9% to 107.5%. Good separation between the firework samples from different regions was achieved by using element ratios and principal component analysis (PCA). These results from the preliminary study showed that the EDTA‐assisted MPT‐MS combined with PCA is a powerful tool for characterizing firework samples and tracing them back to their sources, which is valuable to effectively regulate and manage banned fireworks.

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EDTA‐Assisted MPT‐MS for Trace Analysis of Heavy Metals in Fireworks

Zhao,

Huang,

Yang

et al. 2024

J Mass Spectrom

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show abstract

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High sensitive detection of Cd, Hg, Pb and Cr in rice based on LA-MPT-OES with optimized excitation regions by two-dimensional characterization of plasma plume

Cited by 1 publication

References 30 publications

EDTA‐Assisted MPT‐MS for Trace Analysis of Heavy Metals in Fireworks

EDTA‐Assisted MPT‐MS for Trace Analysis of Heavy Metals in Fireworks

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