Investigation of cadmium contamination in wheat flour and assessment on dietary exposure in Shandong Province
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1.School of Public Health, Shandong University, Shandong Ji’nan 250012, China;2.Shandong Center for Disease Prevention and Control, Academy of Preventive Medicine, Shandong University, Shandong Ji’nan 250014, China

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R155

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    Abstract:

    Objective This study was designed to investigate cadmium (Cd) pollution levels in wheat and wheat flour in different cities of Shandong Province, as well as conduct preliminary health risk assessment of Cd intake via wheat flour.Methods 1 789 samples of wheat or wheat flour were collected from farmers’ markets, supermarkets, and farmers in 16 cities of Shandong Province. Inductively coupled plasma-mass spectrometry (ICP-MS) was performed to determine the Cd content in wheat. Based on the data of residents’ wheat flour consumption, the risk of Cd exposure of residents through wheat flour was estimated.Results The Cd level of wheat was higher than that of wheat flour (Z=-12.50,P<0.001), and there were differences among cities in Cd levels in both wheat and wheat flours. The estimated monthly intake (EMI) of the average consumer group in Shandong Province was 1.18 μg/kg·BW, accounting for 4.72% of the provisional tolerable monthly intake (PTMI). The EMI of the high-consumption population of wheat flour was 2.87 μg/kg·BW, accounting for 11.47% of the PTMI.Conclusion The exposure risk of dietary Cd from wheat flour in the average consumer population of Shandong Province is low; however, further attention should be paid to the exposure risk to dietary Cd in high wheat-flour consumers in cities with relatively high Cd content.

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YANG Yonghao, DONG Wenya, LIU Jing, CHU Zunhua, ZHAO Jinshan, ZHAO Xiulan, XIAO Peirui. Investigation of cadmium contamination in wheat flour and assessment on dietary exposure in Shandong Province[J].中国食品卫生杂志,2023,35(7):1042-1048.

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History
  • Received:May 01,2022
  • Revised:
  • Adopted:
  • Online: November 17,2023
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