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首页> 外文期刊>Turkish journal of chemistry >Arsenic and antimony determination in refined and unrefined table salts by means of hydride generation atomic absorption spectrometry--comparison of sample decomposition and determination methods
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Arsenic and antimony determination in refined and unrefined table salts by means of hydride generation atomic absorption spectrometry--comparison of sample decomposition and determination methods

机译：氢化物发生原子吸收光谱法测定精制和未精制食盐中的砷和锑-样品分解和测定方法的比较

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摘要

An evaluation was made of different digestion methods forthe determination of arsenic and antimony in table salt samples priorto hydride generation atomic absorption spectrometric analysis.Microwave acid digestion, classical wet digestion, dry ashing, andfusion were applied to the decomposition of salt samples and optimumconditions were investigated. Samples were decomposed by changingheating time, digestion techniques, and the amount and composition ofacid, and then the concentrations of arsenic and antimony in anunrefined salt sample were measured. It is concluded that microwaveacid digestion decomposes salt samples with a very short heating timeand with small amounts of reagents compared with the classical wetdigestion methods, which require several hours for the heating stepand several milliliters of reagents. The accuracy of the procedurewas checked using pond sediment certified reference material. Theproposed procedure was applied for the determination of arsenic andantimony in several table salt samples collected in ›zmir, Turkey, andthe arsenic contents in the samples were found to be below the maximumpermissible limits. Microwave digestion in combination with hydridegeneration atomic absorption spectrometry could be used routinely tomonitor these metals in table salt samples.
机译：对氢化物发生原子吸收光谱法之前测定食盐样品中砷和锑的不同消化方法进行了评估。微波消解，经典湿消化，干灰化和熔融对食盐样品的分解进行了研究，并研究了最佳条件。通过改变加热时间，消解技术，酸的量和组成来分解样品，然后测量未经精制的盐样品中砷和锑的浓度。结论是，与传统的湿消化方法相比，微波酸消解法在加热时间短且试剂量少的情况下分解了盐样品，而传统的湿消化方法需要几个小时的加热步骤和几毫升的试剂。使用池塘沉积物认证的参考材料检查了该程序的准确性。拟议的程序用于测定在土耳其› zmir采集的几种食盐样品中的砷和锑，发现样品中的砷含量低于最大允许限值。微波消解结合氢化物发生原子吸收光谱法可常规用于监测食盐样品中的这些金属。

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