Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
School of Environment, Beijing Normal University, Beijing, 100875, China.
Sci Data. 2023 Oct 17;10(1):706. doi: 10.1038/s41597-023-02597-y.
Dietary methylmercury (MeHg) exposure increases the risk of many human diseases. The Guangdong-Hong Kong-Macao Greater Bay Area (GBA) is the world's most populous bay area and people there might suffer a high risk of dietary MeHg exposure. However, there lacks a time-series high spatial resolution dataset for dietary MeHg exposure in the GBA. This study constructs a high spatial resolution (1 km × 1 km) dataset for dietary MeHg exposure in the GBA during 2009-2019. It first constructs the dietary MeHg exposure inventory for each county/district of the GBA, based on MeHg concentrations of foods (i.e., rice and fish in this study) and per capita rice and fish intake. Subsequently, this study spatializes the dietary MeHg exposure inventory at 1 km × 1 km scale, using gridded data for food consumption expenditure as the proxy. This dataset can describe the spatially explicit hotspots, distribution patterns, and variation trend of dietary MeHg exposure in the GBA. This dataset can support spatially explicit evaluation of MeHg-related health risks in the GBA.
膳食甲基汞（MeHg）暴露会增加许多人类疾病的风险。粤港澳大湾区（GBA）是世界上人口最多的湾区，那里的人们可能面临高膳食 MeHg 暴露的风险。然而，该地区缺乏 GBA 地区膳食 MeHg 暴露的时间序列高空间分辨率数据集。本研究构建了 2009-2019 年 GBA 地区膳食 MeHg 暴露的高空间分辨率（1km×1km）数据集。它首先根据食物（即本研究中的大米和鱼类）中的 MeHg 浓度以及人均大米和鱼类摄入量，构建了 GBA 每个县/区的膳食 MeHg 暴露清单。随后，本研究使用网格化食物消费支出数据作为代理，将膳食 MeHg 暴露清单空间化到 1km×1km 尺度。该数据集可以描述 GBA 地区膳食 MeHg 暴露的热点、分布模式和变化趋势。该数据集可以支持 GBA 地区 MeHg 相关健康风险的空间明确评估。
