| 高向阳，游新侠，余艳.库仑滴定法快速测定砷溶液胁迫下大蒜、花生不同组织的砷吸收量[J].广东农业科学,2013,40(18):94-96 |
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库仑滴定法快速测定砷溶液胁迫下大蒜、花生不同组织的砷吸收量 |
| Rapid determination of arsenic uptake from garlic, peanut different tissue under arsenic solution stress by Coulomb Titrimetric Method |
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| DOI： |
| 中文关键词: 微波消解 库仑滴定法 大蒜 花生 砷胁迫 |
| 英文关键词: microwave digestion coulomb titrimetric method garlic peanut arsenic solution stress |
| 基金项目: |
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| 中文摘要: |
| 为了解砷溶液胁迫下大蒜和花生不同组织对砷吸收的特性和规律，并建立一种快速测定农产品中砷的方法，利用微波程序消解技术快速处理样品，将消解液中的As5+转化为As3+后，依据法拉第电解定律，用阳极电生的I3-进行测定，根据消耗的电量直接计算样品中砷的质量分数。结果表明：各样品自外皮至内对砷均有吸收，大蒜的平均吸收量为7.363~6.281 mg/kg，花生的平均吸收量为7.191~1.083 mg/kg，该方法重现性好，简单快速，适于农产品中元素砷的快速分析。对大蒜粉进行平行测定，相对标准偏差RSD为3.2%[n=12]，回收率为98.80%~102. 80%。 |
| 英文摘要: |
| In order to understand the rules and characteristics of arsenic uptake from garlic, peanut different tissue under arsenic solution stress, and to establish a rapid determination method of arsenic in agricultural products, microwave digestion procedure was used to process samples rapidly, As5+ was changed into As3+ in the digestion solution. According to Faraday's law of electrolysis, anode electric I3-was determined, the mass fraction of arsenic in sample was calculated according to the power consumption directly. The results showed that:the samples from surface to inside. All tissue absorbs arsenic, the average absorption of garlic was 7.363~6.281 mg/kg, the average absorption of peanut was 7.191~1.083 mg/kg. This method was reproducible, simple, fast, and suitable for rapid analysis of elements arsenic in agricultural product . Garlic powder parallel was determined 12 times and its RSD was 3.2%(n=12), the recovery rate was 98.80%~102.80%. |
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