Shenzhen Entry-Exit Inspection and Quarantine Bureau, 518067, Shenzhen, China.
J Water Health. 2010 Mar;8(1):116-25. doi: 10.2166/wh.2009.104.
A method for the determination of 42 hazard residues required by 'Japan Positive List System' in bottled water was described. Hazard compounds in bottled water were extracted with a solid phase extraction step using C18 disks. Determination was carried out by gas chromatography/mass spectrometry (GC/MS) and liquid chromatography-tandem mass spectrometry (LC/MS/MS). The disk extraction has high throughput which is well adapted to isolate and enrich these compounds from large volumes of water. For the water sample spiked at three concentration levels (LOQ, 4 times LOQ and 8 times LOQ), the recoveries of all analytes ranged between 65% and 120% with a relative standard deviation<24% (n=8).
描述了一种用于测定瓶装水中“日本肯定列表制度”所要求的 42 种危害残留物的方法。采用 C18 圆盘固相萃取步骤从瓶装水中提取危害化合物。通过气相色谱/质谱联用 (GC/MS) 和液相色谱-串联质谱 (LC/MS/MS) 进行测定。圆盘萃取具有高通量的特点，非常适合从大量水中分离和富集这些化合物。对于在三个浓度水平（LOQ、4 倍 LOQ 和 8 倍 LOQ）进行加标处理的水样，所有分析物的回收率在 65%至 120%之间，相对标准偏差<24%（n=8）。
