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| Determination of Magnesium in Hydrogel by Inductively Coupled Plasma Atomic Emission Spectrometry（ICP-AES）with Wet Digestion |
| Received:June 25, 2023 Revised:December 26, 2023 |
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| DOI：10.3969/j.issn.2095-1035.2024.04.014 |
| KeyWord:Inductively coupled plasma atomic emission spectrometry (ICP-AES)； Hydrogel；Mg; Wet digestion |
| Author | Institution |
| Zhang fenfen |
东华大学 |
| LIU Xiaoyun |
东华大学 |
| Yang ming |
东华大学 |
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| Abstract: |
| In order to accurately determine the content of metal elements in hydrogels, a method based on wet digestion and inductively coupled plasma atomic emission spectrometry (ICP-AES) was established to determine the absolute content of Mg in hydrogels. ICP-AES was used with 279.078 as the analysis line, RF power: 1.1 kW; Integration time: 5 s; Atomizer pressure: 0.4 MPa; Cooling gas: 20.0 L/min; Speed of the peristaltic pump: 30 r/min; Plasma gas flow rate: 10.0 L/min; Samples were tested three times. The difference in the digestion degree of sample using nitric acid, nitric acid-perchloric acid wet digestion and nitric acid-microwave digestion was compared. Results showed that there were almost no significant differences between the Mg content compared with the samples digested 2 hours at 110 ℃ by nitric acid, nitric acid - perchloric acid (1:1), and nitric acid – microwave digestion method. The relative standard deviations (RSD, n=3) of the intraday and interday of the method were 0.38% and 1.19%, respectively and the recoveries were 97.57% ~ 98.23%. The method is accurate, applicability and reliable. It is suitable for the determination of Mg in hydrogel, and can provide a reference for the quantitation of metallic elements in hydrogel. |
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