This powerpoint presentation begins by providing a brief overview of the formation of iodinated disinfection byproducts (DBPs) and Electrospray Ionization-Triple Quadrupole Mass
Spectrometry (ESI-tqMS). Study objectives were to: optimize the ESI-tqMS precursor ion scan of
126.9 with iodine-containing standard compounds; detect and identify polar iodo-DBPs in
simulated drinking water with the aid of Ultra
Performance Liquid Chromatography (UPLC); and, compare the formation of polar iodo-DBPs in
chlorination and chloramination. Materials included: a standard solution of
3-iodopropionic acid (TCI);
3,5-diiodosalicylic acid, 3,5-diiodo-L-tyrosine,
and 2,4,6-triiodophenol (ChemService);
(E)-3-(5-iodo-2-furyl)prop-2-enoic acid, and
3-iodophthalic acid (Maybridge), dissolved in 1:1 water/acetonitrile at a
concentration of 1 mg/L each. Materials also included: natural organic matter -
Suwannee River Fulvic Acid (SRFA) and
Suwannee River Humic Acid (SRHA); methyl tert-butyl ether (MTBE, Aldrich) and
acetonitrile (ACN, SAJ) were of HPLC grade, all chemicals were of reagent grade. Methods included: total organic iodine (TOI) -
a precombustion station (AQF-100, Mitsubishi) with
ESI-tqMS (waters) using selected ion recording (SIR)
of m/z 126.9; chlorine - USEPA method 4500-Cl F; ESI-MS/MS
full scan
precursor ion scan
product ion scan; and, UPLC-ESI-MS/MS
selected ion recording (SIR)
precursor ion scan
product ion scan. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 38 |
| Published : | 11/01/2009 |
