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- W2499157480 abstract "Identification of trace amounts of compounds found in the environment, including endocrine disruptors, is difficult. Two analytical tools developed by the U.S. EPA's Environmental Sciences Division, Mass Peak Profiling from Selected Ion Recording Data (MPPSIRD) and a Profile Generation Model (PGM), utilize high resolution mass spectrometry to determine elemental compositions of molecular and fragment ions. These tools provide structural details of molecules and limit the identity of compounds to a manageable number of isomers. Compounds tentatively identified through literature searches can be confirmed by comparison of analyte mass spectra and retention times with those of standards. The enhanced speed and sensitivity provided by MPPSIRD allow elemental compositions to be determined for ions from compounds entering the mass spectrometer as chromatographic peaks in amounts too small for FTIR and NMR to be used. Application of MPPSIRD and the PGM for solving real world environmental contamination problems is reviewed, and a detection limit for ethinylestradiol with probe introduction is determined." @default.
- W2499157480 created "2016-08-23" @default.
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- W2499157480 date "1999-07-23" @default.
- W2499157480 modified "2023-10-16" @default.
- W2499157480 title "Identifying Endocrine Disruptors by High-Resolution Mass Spectrometry" @default.
- W2499157480 doi "https://doi.org/10.1021/bk-2000-0747.ch009" @default.
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