Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, 842 15 Bratislava, Slovakia.
Nutrients. 2022 Aug 27;14(17):3530. doi: 10.3390/nu14173530.
Selenium is a trace element essential for the proper functioning of human body. Since it can only be obtained through our diet, knowing its concentrations in different food products is of particular importance. The measurement of selenium content in complex food matrices has traditionally been a challenge due to the very low concentrations involved. Some of the difficulties may arise from the abundance of various compounds, which are additionally present in examined material at different concentration levels. The solution to this problem is the efficient separation/preconcentration of selenium from the analyzed matrix, followed by its reliable quantification. This review offers an insight into cloud point extraction, a separation technique that is often used in conjunction with spectrometric analysis. The method allows for collecting information on selenium levels in waters of different complexity (drinking water, river and lake waters), beverages (wine, juices), and a broad range of food (cereals, legumes, fresh fruits and vegetables, tea, mushrooms, nuts, etc.).
硒是人体正常运作所必需的微量元素。由于它只能通过饮食获得，因此了解不同食品中硒的浓度尤为重要。由于涉及的浓度非常低，因此在复杂的食品基质中测量硒含量一直是一个挑战。一些困难可能源于各种化合物的丰富性，这些化合物在被检查的材料中以不同的浓度水平存在。解决这个问题的方法是从分析基质中有效分离/预浓缩硒，然后对其进行可靠的定量。本文综述了浊点萃取技术，这是一种常用于与光谱分析相结合的分离技术。该方法可以提供有关不同复杂程度的水（饮用水、河水和湖水）、饮料（葡萄酒、果汁）以及各种食品（谷物、豆类、新鲜水果和蔬菜、茶、蘑菇、坚果等）中硒水平的信息。
