James Blessing, Zhang Weili, Sun Pei, Wu Mingyan, Li Hong Hong, Khaliq Muhammad Athar, Jayasuriya Pathmamali, James Swithin, Wang Guo
a College of Resources and Environmental Science, Key Laboratory of Soil Environmental Health and Regulation in Fujian Province , Fujian Agriculture and Forestry University , Fuzhou , China.
Int J Environ Health Res. 2017 Dec;27(6):487-497. doi: 10.1080/09603123.2017.1386768. Epub 2017 Oct 10.
The aim of this study was to investigate the accumulation characteristics of tungsten (W) by different indica rice cultivars from the soil and to assess the potential risks to human health via dietary intake of W in rice consumption. A total of 153 rice (ear) samples of 15 cultivars and the corresponding surface soil samples were collected from 7 cities in Fujian Province of southeastern China. The available soil W were extracted using HCO·2HO-(NH)CO·HO at pH 3.3). Results showed that the total soil W ranged from 2.03 mg kg to 15.34 mg kgand available soil W ranged from 0.03 mg kg to 1.61 mg kg. The W concentration in brown rice varied from 7 μg kg to 283 μg kg and was significantly correlated with the available soil W. The highest mean TF (transfer factor based on available soil W) was 0.91 for Te-you 627 (hybrid, indica rice), whereas the lowest was 0.08 for Yi-you 673 (hybrid, indica rice). The TF decreased with the increase in available soil W, clay content, and cation exchange capacity. The consumption of the brown rice produced from the investigated areas in some cultivars by the present study may cause risks to human health.
本研究旨在调查不同籼稻品种从土壤中积累钨（W）的特征，并评估通过食用大米膳食摄入钨对人类健康的潜在风险。从中国东南部福建省的7个城市收集了15个品种的153份水稻（穗）样品及相应的表层土壤样品。采用pH 3.3的HCO·2HO-(NH)CO·HO提取土壤有效态钨。结果表明，土壤全钨含量范围为2.03 mg kg至15.34 mg kg，土壤有效态钨含量范围为0.03 mg kg至1.61 mg kg。糙米中钨浓度在7 μg kg至283 μg kg之间，且与土壤有效态钨显著相关。特优627（杂交籼稻）的平均转移因子（基于土壤有效态钨）最高，为0.91，而宜优673（杂交籼稻）最低，为0.08。转移因子随土壤有效态钨、粘粒含量和阳离子交换量的增加而降低。本研究中部分品种调查区域生产的糙米食用可能对人类健康造成风险。
