A fast and effective routine method based on HS-SPME-GC-MS/MS for the analysis of organotin compounds in biota samples

作者：Noventa Seta^*; Barbaro Jvan; Formalewicz Malgorzata; Gion Claudia; Rampazzo Federico; Brusa Rossella Boscolo; Gabellini Massimo; Berto Daniela

来源：Analytica Chimica Acta, 2015, 858: 66-73.

DOI：10.1016/j.aca.2014.11.028

• Biota
• Organotin
• Routine
• Tributyltin
• Solid phase microextraction
• Calibration

This work validated an automated, fast, and low solvent-consuming methodology suited for routine analysis of tributyltin (TBT) and degradation products (dibutyltin, DBT; monobutyltin, MBT) in biota samples. The method was based on the headspace solid-phase microextraction methodology (HS-SPME), coupled with gas chromatographic separation and tandem mass-spectrometry (GC-MS/MS). The effectiveness of the matrix-matched signal ratio external calibration was tested for quantification purposes. The exclusion of matrix influences in the calibration curves proved the suitability of this versatile quantification method. The method detection limits obtained were of 3 ng Sn g (1) dw for all the analytes. The analysis of references materials showed satisfying accuracy under optimum calibration conditions (% recovery between 87-111%; vertical bar Z-scores vertical bar< 2). The repeatability RSD% and intra-laboratory reproducibility RSD% were lower than 9.6% and 12.6%, respectively. The work proved the remarkable analytical performances of the method and its high potential for routine application in monitoring organotin compounds (OTC).

• 出版日期2015-2-9