Objective To detect the content of 7 kinds of anions in Fuding white tea and white dew tea. Methods At 25 ℃, 80 ℃ and 100 ℃, 30 samples of 1 g were soaked in 50 mL ultrapure water (the ratio of material to water was 1:50) for 5 min. Seven anions were determined and analyzed by ion chromatography. Results The content of anions in 30 samples of tea was low. The concentration of the other 6 ions in the tea soaked at 25 ℃ was significantly lower than that in 80 ℃ and 100 ℃ (P<0.05), except for bromine ions. The concentration of chloride ions, nitrite ions, dihydrogen phosphate ions and sulfate ions in the tea soaked at 100 ℃ was significantly higher than that in the tea soaked at 80 ℃ (P<0.05). Conclusion The method of detecting 7 kinds of anions in tea by ion chromatography is reliable.
标题：离子色谱法检测福鼎白茶白露茶茶水中的7种阴离子成分
英文标题：Determination of seven anions in Fuding white tea white dew tea by ion chromatography
