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DETERMINATION OF PHTHALATES IN WATER AND SOIL BY TANDEM MASS SPECTROMETRY UNDER CHEMICAL IONIZATION CONDITIONS WITH ISOBUTANE AS REAGENT GAS
Citation:
Brumley, W., E. Shafter, AND P. E. Tillander. DETERMINATION OF PHTHALATES IN WATER AND SOIL BY TANDEM MASS SPECTROMETRY UNDER CHEMICAL IONIZATION CONDITIONS WITH ISOBUTANE AS REAGENT GAS. Journal of the Association of Official Analytical Chemists International 77(5):1230-1236, (1994).
Description:
Phthalate determination is important because phthalates often are major impurities in samples and can have significant health effects. Tandem mass spectrometry under chemical ionization mass spectrometry conditions with isobutane as the reagent gas was used to determine 11 phthalate esters spiked in water and soil samples. Sample extraction and cleanup are described. This approach gives phthalate identity, including molecular weight, and quantitates with high specificity. Results compared favorably with results obtained using a stable-isotope-labeled internal standard for dioctyl phthalate.