項目報告?

1 樣品信息Sample description?

收到飲料樣品xx個，a和b

A total of xx drink samples, where received by the customer.

2 材料與方法Materials and Methods?

2.1 試劑Chemicals?

所有的溶劑與試劑均為色譜級，苯甲酸，山梨酸，糖精鈉，檸檬黃，莧菜紅，胭脂紅，日落黃，亮藍(lán)標(biāo)準(zhǔn)品購于xxx

All chemicals and solvent were HPLC. Standard: enzoic acid, sorbic acid, saccharin sodium, tartrazine, amaranth, carmine, sunset yellow, brilliant blue and were purchased from xxx.

2.2 樣品處理Sample Preparation?

1) 將樣品搖勻，吸取20 mL的樣品；

2) 20 mL樣品加xxx稀釋至50 mL，搖勻并用0.22 μm濾膜過濾，進(jìn)樣10 μL。

注：含二氧化碳的飲料需提前用超聲波除去二氧化碳。

2.3 HPLC分析HPLC Analysis?

本實驗所用的儀器為Agilent高效液相色譜儀，配備紫外檢測器。

色譜柱為xxx ODS (250 mm*4.0 mm, 5 μm)，流動相為A為xxx，B為0.02 mol/L xxx溶液，流速為1.0 mL/min。

3 結(jié)果Results?

色譜圖Chromatogram?