Simultaneous determination of 42 organic chemicals in bottled water by combining C18 extraction disk with GC-MS and LC/MS/MS technique.
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).
Jin
Bao-hui
BH
Shenzhen Entry-Exit Inspection and Quarantine Bureau, 518067, Shenzhen, China. jbaohui@yahoo.com.cn
Xiao
Feng
F
Chen
Bo
B
Chen
Pei-jin
PJ
Xie
Li-qi
LQ
D002853:Chromatography, Liquid / Q000379:methods*; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D014874:Water Pollutants, Chemical; D014867:Water