The determination of inorganic mercury species in water, beverages and foods has been a special research priority in recent years because mercury, as a highly carcinogenic species, even in trace concentration, has high adverse effects on the body of living organisms. In this research, combining two extraction techniques, including microwave-assisted cloud point extraction and dispersive-solid phase extraction (MA-CP-dSPE), for the separation and pre-concentration of mercury in environmental samples is presented. This method is based on the dispersion of nanoparticles in micellar media in the presence of a novel mono-thiosemicarbazone Schiff base (2 N′-[4-diphenylamino]benzylidene) hydrazinecarbothiohydrazide) ligand. Using the experimental conditions defined in the optimization, the method allowed mercury determination from 0.020 to 350 mg/L with a detection limit of 0.005 mg/L. The accuracy of the procedure was tested by analysing certified reference material. The method was successfully applied to copper determination in spring water, beverage and rice samples.

中文翻译：

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在胶束介质中采用组合微波辅助浊点和分散固相萃取从泉水、饮料和大米样品中萃取和测定汞

近年来，水、饮料和食品中无机汞形态的测定一直是一个特别的研究重点，因为汞作为一种高度致癌物质，即使是微量浓度，也会对生物体产生很高的不利影响。在这项研究中，提出了结合微波辅助浊点萃取和分散固相萃取（MA-CP-dSPE）两种萃取技术来分离和预浓缩环境样品中的汞。该方法基于在新型单缩氨基硫脲席夫碱（2 N'-[4-二苯氨基]亚苯亚甲基）肼硫代碳酰肼）配体存在下将纳米粒子分散在胶束介质中。使用优化中定义的实验条件，该方法可测定 0.020 至 350 mg/L 的汞，检测限为 0.005 mg/L。通过分析经过认证的参考材料来测试该程序的准确性。该方法成功应用于泉水、饮料和大米样品中铜的测定。