Heavy Metals in Grains from Jilin Province, China, and Human Health Risk
Heavy Metals in Grains from Jilin Province, China, and Human Health Risk
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DOI：
10.4315/jfp-20-075
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发表时间：
2020-12-01
影响因子：
2
通讯作者：
Lv, Shaowu
中科院分区：
文献类型：
--
作者：
Ge, Danyang;Gao, Haicheng;Lv, Shaowu
重金属是工农业发展不可缺少的组成部分。吉林省作为中国工业的摇篮和农业生产的重要省份，当地环境和粮食重金属污染一直备受关注。在这项研究中，我们重点研究了四种对人体有害的重金属：砷（As）、镉（Cd）、甲基汞（MeHg）和无机砷（iAs）。采用石墨炉原子吸收光谱法和液相色谱-原子荧光光谱法测定了341份粮食样品中这些金属的含量，并与国家标准限量值进行了比较。为了评估对人类健康的潜在风险，我们确定了目标危险商和危险指数。重金属的检出率如下，从高到低：Cd (48%)。 iAs (20.8%)。甲基汞（4.6%）。铅（3%）。这些数值大多远低于国家标准的限值。目标危险商和危险指数均小于1；由此可见，吉林省粮食重金属污染并不严重，人们对粮食重金属的风险不高。大米中MeHg含量高于国家标准。各类粮食中均检出Cd；检出率最高(48%)。THQ和HI
Heavy metals are an indispensable part of industrial and agricultural development. As the cradle of China's industry and an important province for agricultural production, Jilin Province has been an area of concern about heavy metal pollution in the local environment and grains. In this study, we focused on four heavy metals that are harmful to humans: arsenic (As), cadmium (Cd), methylmercury (MeHg), and inorganic arsenic (iAs). We determined the contents of these metals in 341 grain samples by using graphite furnace atomic absorption spectrometry and liquid chromatography-atomic fluorescence spectrometry and compared our results with the limit value of national standards. To evaluate the potential risk to human health, we determined the target hazard quotient and hazard index. Heavy metals were detected at these rates, from high to low: Cd (48%). iAs (20.8%). MeHg (4.6%). Pb (3%). Most of these values are far below the limit of national standards. The target hazard quotient and hazard index were both smaller than 1; thus, we conclude that heavy metal pollution in grains in Jilin Province is not serious and that people are not at high risk from heavy metals in grains.HIGHLIGHTSMeHg content in rice was higher than the national standard.Cd was detected in all kinds of grains; its detection rate (48%) was the highest.THQ and HI