Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dr. Qudrat-I-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh.
Hi-Tech Health Care Ltd., Banani, Dhaka-1213, Bangladesh.
J Environ Public Health. 2022 Mar 8;2022:1836597. doi: 10.1155/2022/1836597. eCollection 2022.
Human exposure to nonessential trace elements occurs from food crops that are contaminated by the soil. The present study aimed to determine the level of heavy metals in soil and rice samples using an atomic absorption spectrophotometer from three major industrial areas in Bangladesh: Savar, Gazipur, and Ashulia. Heavy metals were detected in the order Fe > Zn > Ni > Cr > Pb > Co > Cu > Cd > As and Zn > Cu > Cr > Co > Fe > Cd > Pb > Ni > As in the soil and rice samples, respectively. From this analysis, it was observed that the detected concentrations of Zn, Cd, Cr, and Co were higher than the WHO/FAO recommended maximum tolerance values. The transfer factor of the detected heavy metals from soil to rice was detected in the following order: Zn > Cu > Cr > Co > Cd > Pb > Fe > As > Ni. The accumulation of heavy metals in rice is a major public health concern. Therefore, we recommend strict regulations for the safety of food crops grown in the study areas.
人体通过食用受土壤污染的农作物而接触到非必需微量元素。本研究旨在使用原子吸收分光光度计测定来自孟加拉国三个主要工业区（萨瓦尔、加济布尔和阿舒利亚）的土壤和稻米样本中的重金属水平。在土壤和稻米样本中，重金属的检出顺序分别为 Fe＞Zn＞Ni＞Cr＞Pb＞Co＞Cu＞Cd＞As 和 Zn＞Cu＞Cr＞Co＞Fe＞Cd＞Pb＞Ni＞As。从这一分析中可以看出，检出的 Zn、Cd、Cr 和 Co 浓度均高于世界卫生组织/粮农组织建议的最大耐受值。从土壤到稻米中检测到的重金属转移系数的顺序为：Zn＞Cu＞Cr＞Co＞Cd＞Pb＞Fe＞As＞Ni。重金属在稻米中的积累是一个主要的公共卫生关注点。因此，我们建议对研究地区种植的粮食作物的安全性进行严格监管。
