Nickel contamination status in food and dietary exposure assessment: a review
HAN Junde1,2, WU Yinyin1, ZHOU Biao2
1. School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China; 2. Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, China
Abstract：With the rapid development of emerging industries and industrialization in China, soil nickel contamination has become a serious concern, with food being the primary source of nickel exposure to the human body. The level of nickel contamination in food is gennerally higher in developed regions of China. Among different food categories, grains, legumes and aquatic products exhibit relatively higher nickel content and detection rates. Currently in China, the methods for studying nickel dietary exposure risk are relatively conservative, primarily employing point assessment, simple distribution and probability assessment to calculate daily exposure levels among residents and quantifying cumulative exposure risks using the hazard index method. It is found that there is still a certain risk of dietary nickel among residents with younger age groups and under extreme conditions of high consumption or high pollution. Additionally, the cancer risk among the rural population is higher than that among the urban population. This article reviews the research progress on the current status of nickel contamination in Chinese food and the assessment of dietary exposure risk for residents, based on literature from databases such as CNKI and PubMed up to 2023, aiming at providing a reference for future research into nickel exposure and risk assessment in food.
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