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論文名稱
A new method for determination of fluoride ion in commodity tea by ion-exclusion chromatography
發(fā)表刊物
CyTA - Journal of Food
發(fā)表年度
2018
論文作者
Lili Zhou、 Huaiping Li、 Shanrong Ye、 Heping Tan
承擔(dān)單位
生物所
收錄情況
關(guān)鍵詞
Fluoride ion; ion-exclusion chromatography; interfering ion; tea
摘要
Due?to?the?effect?of?interfering?ion,?the?content?of?fluoride?ion?in?tea?brew,?detected?by?ion-exchange?chromatography,?was?markedly?higher?than?ion-selective?electrode.?Ion-exclusion?chromatography,?a?new?method?for?the?determination?of?fluoride?ion?in?tea?brew,?was?proposed?and?evaluated?in?this?study.?Two?Metrosep?organic?acid?columns?in?series?resulted?in?better?separation?of?fluoride?ion?than?single?column.?The?most?suitable?organic?modifier?for?eluent?and?its?percentage?were?checked,?the?optimal?conditions?of?the?mobile?phase?was?0.33?mM?sulfuric?acid?solution?containing?10.5%?(v/v)?acetone,?at?a?flow?rate?of?0.5?mL/min.?Satisfactory?sensitivity?and?wide?linearity?range?were?obtained.?The?applicability?of?the?method?was?demonstrated?by?the?analysis?of?various?tea?samples?in?China,?the?accuracy?of?the?results?was?proved?by?recovery?tests,?and?the?concordance?with?the?values?was?obtained?by?ion-selective?electrode.
