Rapid Determination of Calcium, Iron, and Zinc in Gluconate Oral Solutions by Solution Cathode Glow Discharge - Atomic Emission Spectroscopy (SCGD-AES)

文献类型： 外文期刊

第一作者： Zheng, Peichao

作者： Zheng, Peichao;Yan, Nantian;Wang, Jinmei;Fei, Guoxing;Qazi, Hafiz Imran Ahmad;Li, Biao;Tian, Hongwu;Dong, Daming;Tian, Hongwu;Dong, Daming;Guo, Lianbo

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关键词： Elemental analysis; gluconate oral solutions; solution cathode glow discharge - atomic emission spectroscopy (SCGD-AES)

期刊名称：ANALYTICAL LETTERS （ 影响因子：1.6； 五年影响因子：1.9 ）

ISSN： 0003-2719

年卷期： 2024 年

页码：

收录情况： SCI

摘要： A novel solution cathode glow discharge atomic emission spectroscopy (SCGD-AES) system coupled with simplified sample preparation was developed for determining Ca, Fe, and Zn in gluconate oral solution. The preparation of the oral solution only involves diluting 1 g of the sample 100-fold and acidification with HNO3 to a concentration of 0.1 mol L-1. The preparation of each solution requires less than 5 min. Five oral solutions containing Ca, Fe, and Zn were analyzed. The results indicate that the optimal parameters are HNO3 of pH 1.0 as the electrolyte, a sample flow rate of 2.05 mL min-1, and a discharge current of 65 mA. The detection limits (DLs) of Ca, Fe, and Zn were 58.64, 64.29, and 15.92 mu g L-1. The analyses by SCGD-AES for Ca, Fe, and Zn using direct dilution are in agreement with the values by ICP-OES and SCGD-AES with digestion. A t-test was conducted on the oral liquid samples, revealing that the majority of the obtained p-values exceeded .05. In addition, SCGD-AES reduces the time, energy, and quantity of concentrated HNO3 compared with previous studies, and the measurement time of each oral liquid sample was less than 2 min. These findings demonstrate the use of SCGD-AES as an expedited and dependable method for the determination of trace elements in health food products.

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