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| Determination of Sulfur Dioxide in Wine by Gas Diffusion Separation-Sequential Injection Spectrophotometry |
| Received:May 07, 2014 Revised:June 03, 2014 |
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| DOI：doi:10.3969/j.issn.2095-1035.2014.04.016 |
| KeyWord:gas diffusion separation; sequential injection; sulfur dioxide; spectrophotometry |
| Author | Institution |
| LIU Jing |
东北大学 理学院 分析科学研究中心，沈阳 |
| WANG Meiyan |
东北大学 理学院 分析科学研究中心，沈阳 |
| FAN Shihua |
东北大学 理学院 分析科学研究中心，沈阳 |
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| Abstract: |
| A SIA system combined with gas diffusion separation was developed for the determination of sulfur dioxide in wine samples based on addition reaction of sulfite ion and malachite green solution in weak alkaline medium. Under the optimum experimental conditions, the linear ranges were 1.0~5.00 μg/mL and 5.0~50.0 μg/mL when the flow rates were 1.2 mL/min and 4.2 mL/min in receptor medium, respectively. The detection limit (3σ) was 0.33 μg/mL with the relative standard deviation (n=7) less than 0.43%. The Rrecoveryies was in the range of 98.7%~104.7%. The method was successfully applied to the determination of sulfur dioxide in wine samples. |
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