Estimates of Soil Ingestion in a Population of Chinese Children.
Estimates of Soil Ingestion in a Population of Chinese Children.
复制标题
中国儿童土壤摄入量的估计
DOI：
10.1289/ehp930
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发表时间：
2017-07-05
影响因子：
10.4
通讯作者：
Liu Y
中科院分区：
文献类型：
--
作者：
Lin C;Wang B;Cui X;Xu D;Cheng H;Wang Q;Ma J;Chai T;Duan X;Liu X;Ma J;Zhang X;Liu Y
中国的土壤污染构成严重的健康风险。然而，有关土壤摄入率（SIR）的中国人口，这是至关重要的评估相关的健康风险的数据，是缺乏的。我们估计了来自广东、湖北和甘肃省的177名中国儿童的土壤摄入量。我们进行了这项调查，采用示踪剂质量平衡法。我们收集了一份重复的所有食物消耗和所有粪便和尿液排泄的1天（）和超过3个连续的d（），以及土壤样品从游戏区和饮用水样品。我们使用ICP-AES和ICP-MS分析了这些样品中的示踪元素Al、Ba、Ce、Mn、Sc、Ti、V和Y的浓度，并估计了每个受试者的SIR。基于每个示踪剂元素的估计SIR数据的特征在于偏态分布，以及较高的示踪剂间和受试者间变异，以及几个离群值。去除离群值后，每日SIR中位数（范围）值（mg/天）为Al，27.8（）; Ba，; Ce，; Mn，; Sc，; Ti，; V，;和Y，。基于最佳示踪法（BTM）的每日SIR中位数/第95百分位数（范围）值为。基于BTM，中国儿童一般人群的SIR推荐值（）为集中趋势和上百分位数。我们没有区分室外土壤和室内灰尘。考虑到室内灰尘中示踪元素的浓度低于室外土壤，实际土壤和灰尘摄入率可能更高。https://doi.org/10.1289/EHP930
China’s soil pollution poses serious health risks. However, data regarding the soil ingestion rate (SIR) of the Chinese population, which is critical to assessing associated health risks, are lacking. We estimated soil ingestion of 177 Chinese children from Guangdong, Hubei, and Gansu Provinces. We conducted this investigation by employing a tracer mass-balance method. We collected a duplicate of all food consumed and all feces and urine excreted on 1 d () and over 3 consecutive d (), as well as soil samples from play areas and drinking-water samples. We analyzed concentrations of the tracer elements Al, Ba, Ce, Mn, Sc, Ti, V, and Y in these samples using ICP-AES and ICP-MS and estimated the SIR for each subject. The estimated SIR data based on each tracer element were characterized by a skewed distribution, as well as higher inter-tracer and inter-subject variation, with several outliers. After removing the outliers, daily SIR median (range) values in milligrams per day were Al, 27.8 (); Ba, ; Ce, ; Mn, ; Sc, ; Ti, ; V, ; and Y, . Daily SIR median/95th percentile (range) values based on the best tracer method (BTM) were . Based on the BTM, recommended SIR values for the general population of Chinese children () are for the central tendency and for the upper percentile. We did not differentiate between outside soil and indoor dust. Considering the lower concentration of tracer elements in indoor dust than outside soil, actual soil and dust ingestion rates could be higher. https://doi.org/10.1289/EHP930