原子吸收分光光度法测定水稻中的重金属——对巴基斯坦不同水稻品种的研究

IF 0.4 Q4 CHEMISTRY, ANALYTICAL
Agha Arslan Wasim, S. Naz, M. N. Khan, Saba Fazal-Ur-Rehman
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引用次数: 6

摘要

众所周知,重金属在人体内积累后具有相当大的毒性。它们普遍存在于地壳中,并倾向于在严重污染的土壤中生长的作物中积累,从而进入食物链。本研究基于对在巴基斯坦卡拉奇当地市场流通的18个水稻品种(Oryza sativa L.)中重金属的分析。使用原子吸收光谱法(AAS)分析了少数重金属,即镉(Cd)、铬(Cr)、钴(Co)、铜(Cu)、铅(Pb)、锰(Mn)、镍(Ni)和锌(Zn)。用硝酸(conc.)消化水稻样品。镉、钴、铬、铅、镍的平均浓度分别为7.3、10.6、107、117和139μg kg-1,而铜、锰和锌的平均浓度则分别为4.7、9.7和14.6 mg kg-1。与以前的研究相比,这项研究的结果表明,巴基斯坦大米中这些重金属的浓度相对较低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Heavy Metals in Rice using Atomic Absorption Spectrophotometry – A Study of Different Rice Varieties in Pakistan
Heavy metals, upon accumulation in human body, are known to possess quite toxic effects. They are ubiquitously found in earth crust and tend to accumulate in crops grown in heavily contaminated soil and hence enter the food chain. This study was based on the analysis of heavy metals in eighteen selected varieties of rice (Oryza sativa L.) that circulates in local market of Karachi, Pakistan. Few heavy metals namely, Cadmium (Cd), Chromium (Cr), Cobalt (Co), Copper (Cu), Lead (Pb), Manganese (Mn), Nickel (Ni), and Zinc (Zn) were analyzed using Atomic Absorption Spectroscopy (AAS). Rice samples were digested using nitric acid (conc.). Average concentrations of Cd, Co, Cr, Pb, Ni were 7.3, 10.6, 107, 117, 139 μg kg-1 of rice respectively, whereas, the respective concentrations of Cu, Mn, and Zn were found to be 4.7, 9.7, and 14.6 mg kg-1 of rice. The results from this study when compared with previous studies revealed that the Pakistani rice is found to have relatively less concentration of these heavy metals.
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来源期刊
CiteScore
1.10
自引率
16.70%
发文量
16
审稿时长
15 weeks
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