分析测试学报2011，Vol.30Issue(12)：1396-1399,4.DOI:10.3969/j.issn.1004-4957.2011.12.013
非抑制离子色谱法测定膨化食品中硼砂(硼酸)
Determination of Borax( Boric Acid) in Puffing Foods by Non-suppressed Ion Chromatography
吴凌涛 1余欣达 1潘灿盛 1陈军 2钟新林2
作者信息
- 1. 中国广州分析测试中心广东省分析测试技术公共实验室,广东广州510070
- 2. 戴安广州应用实验室,广东广州510070
- 折叠
摘要
Abstract
A new method was developed for the determination of borax (boric acid) in puffing foods using non-suppressed ion chromatography. The samples were extracted with methanesulfonie acid by ultra-sound. The solution was made passed through OnGuard II RP, Ag column, Na column and filter membrane after centrifugation and filtration. The separation of boric acid was performed on an anion exchange column of Dionex Ionpac AG16(50 mm x4 mm) + AS16(250 mm x4 mm) with 5 mmol/L sodium hydroxide by isocratic elution at a column temperature of 30 °C. The optimum chromatography conditions were investigated. Under the optimal conditions, the calibration curve for boric acid showed a good linearity in the range of 0. 3 - 3. 0 mg/g with correlation coefficient of 0. 999 5. The spiked recoveries for boric acid were in the range of 78% - 105% with RSDs of 1. 5% -4. 6% . The detection limit was 0. 06 mg/g. This method was applicable for the determination of borax (boric acid) in puffing foods.关键词
非抑制离子色谱/膨化食品/硼砂(硼酸)Key words
non-suppressed ion chromatography/ puffing foods/ borax (boric acid)分类
化学化工引用本文复制引用
吴凌涛,余欣达,潘灿盛,陈军,钟新林..非抑制离子色谱法测定膨化食品中硼砂(硼酸)[J].分析测试学报,2011,30(12):1396-1399,4.
