Determination of Irgarol-1051 and its related s-triazine species in coastal sediments and mussel tissues by HPLC-ESI-MS/MS.
A mild, low-temperature analytical approach based on sonication assisted extraction coupled with HPLC electrospray ionization triple quadrupole tandem mass spectrometry has been developed for the simultaneous qualitative and quantitative determination of the four Irgarol-related s-triazine species, namely Irgarol-1051, M1, M2 and M3, in coastal sediments and Green-lipped mussel samples. Mild extraction conditions were necessary for the preservation of the thermally unstable M2. The Multiple Reaction Monitoring (MRM) mode of detection by ESI-MS/MS enabled reliable qualitative identification and sensitive quantitative determination of those s-triazines. This determination method was applied to evaluate the degree of Irgarol-1051 contamination in the sediments and biota of the coastal environment of Hong Kong--one of the busiest maritime ports in the world. All the four s-triazine species were observed in all of the samples. This is the first time that the newly identified M2 and M3 are detected in coastal sediments and biota tissues.
Tsang
Vic Wing-Hang
VW
Centre for Coastal Pollution and Conservation, Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Ave., Kowloon, Hong Kong, China.
Lei
Ngai-Yu
NY
Lam
Michael Hon-Wah
MH
D000818:Animals; D049872:Bivalvia / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D019015:Geologic Sediments / Q000032:analysis*; D006723:Hong Kong; D015394:Molecular Structure; D010575:Pesticides / Q000032:analysis*; D053719:Tandem Mass Spectrometry; D014227:Triazines / Q000032:analysis*
D010575:Pesticides; D014227:Triazines; C103341:irgarol 1051