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Dietary exposure assessment of total mercury and methylmercury in commercial rice in Sri Lanka
Xu, Xiaohang; Han, Jialiang; Abeysinghe, Kasun S.; Atapattu, Anjana J.; De Silva, P. Mangala C. S.; Xu, Zhidong1; Long, Shuiting5; Qiu, Guangle
2020
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume239
AbstractMethylmercury (MeHg) in rice has attracted growing health concern over the past decade, due to the accumulation of high MeHg levels, which may pose potential health risk to humans. Rice is the staple food in Sri Lanka; nevertheless, the presence of micro pollutants, such as MeHg has been not investigated. Therefore, commercial rice samples from the Sri Lankan market (n = 163) were measured to reveal the total mercury (THg) and MeHg levels. THg (mean: 1.73 +/- 0.89 ng/g, range: 0.21-6.13 ng/g) and MeHg concentrations (mean: 0.51 +/- 0.37 ng/g; range: 0.03-3.81 ng/g) were low. Compared to the fish MeHg exposure, the rice MeHg exposure was generally lower in different consumption groups, suggesting that rice plays a less role than fish in MeHg exposure in Sri Lanka. Babies (infants and toddlers) at one year old may face fish MeHg exposure (0.17 mu g/kg bw/day) higher than the reference dose for MeHg (RfD)-0.1 mu g/kg bw/day, which was more than 5 times that of rice MeHg exposure (0.031 mu g/kg bw/day). Future studies in Sri Lanka should focus on health impacts under long-term overexposure of MeHg, especially in vulnerable populations. Some diet changes should be made to mitigate MeHg exposure levels in Sri Lankans. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordTotal mercury Methylmercury Rice Fish Exposure
Subject AreaEnvironmental Sciences & Ecology
DOI10.1016/j.chemosphere.2019.124749
Indexed BySCI
Language英语
WOS IDWOS:000498305500063
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11531
Collection2012年后新成立研究组
Affiliation1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Atapattu, Anjana J.] Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
4.Atapattu, Anjana J.] Coconut Res Inst, Agron Div, Lunuwila 61150, Sri Lanka
5.De Silva, P. Mangala C. S.] Univ Ruhuna, Dept Zool, Fac Sci, Matara, Sri Lanka
6.Guizhou Med Univ, Guiyang 550025, Guizhou, Peoples R China
Recommended Citation
GB/T 7714
Xu, Xiaohang,Han, Jialiang,Abeysinghe, Kasun S.,et al. Dietary exposure assessment of total mercury and methylmercury in commercial rice in Sri Lanka[J]. CHEMOSPHERE,2020,239.
APA Xu, Xiaohang.,Han, Jialiang.,Abeysinghe, Kasun S..,Atapattu, Anjana J..,De Silva, P. Mangala C. S..,...&Qiu, Guangle.(2020).Dietary exposure assessment of total mercury and methylmercury in commercial rice in Sri Lanka.CHEMOSPHERE,239.
MLA Xu, Xiaohang,et al."Dietary exposure assessment of total mercury and methylmercury in commercial rice in Sri Lanka".CHEMOSPHERE 239(2020).
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