Department of Chemistry, Universidad Nacional del Sur, INQUISUR (UNS-CONICET), Av. Alem 1253 (B8000CPB), Bahía Blanca, Buenos Aires, Argentina.
J Agric Food Chem. 2012 May 16;60(19):4812-7. doi: 10.1021/jf300637b. Epub 2012 May 7.
An automatic flow-batch system that includes two borosilicate glass chambers to perform sample digestion and cold vapor atomic absorption spectroscopy determination of mercury in honey samples was designed. The sample digestion was performed by using a low-cost halogen lamp to obtain the optimum temperature. Optimization of the digestion procedure was done using a Box-Behnken experimental design. A linear response was observed from 2.30 to 11.20 μg Hg L(-1). The relative standard deviation was 3.20% (n = 11, 6.81 μg Hg L(-1)), the sample throughput was 4 sample h(-1), and the detection limit was 0.68 μg Hg L(-1). The obtained results with the flow-batch method are in good agreement with those obtained with the reference method. The flow-batch system is simple, allows the use of both chambers simultaneously, is seen as a promising methodology for achieving green chemistry goals, and is a good proposal to improving the quality control of honey.
设计了一种自动流动批处理系统，该系统包括两个硼硅酸盐玻璃室，用于进行样品消化和冷蒸气原子吸收光谱法测定蜂蜜样品中的汞。通过使用低成本的卤素灯来获得最佳温度，从而进行样品消化。通过 Box-Behnken 实验设计对消化程序进行了优化。在 2.30 至 11.20 μg Hg L(-1)范围内观察到线性响应。相对标准偏差为 3.20%（n = 11，6.81 μg Hg L(-1)），样品通量为 4 个样品 h(-1)，检测限为 0.68 μg Hg L(-1)。流动批处理方法获得的结果与参考方法获得的结果吻合良好。该流动批处理系统简单，允许同时使用两个腔室，被视为实现绿色化学目标的有前途的方法，并且是改进蜂蜜质量控制的好建议。
