Trace Level Determination of Perchlorate in Various Waters by Tandem Suppressed Conductivity and Mass Spectroscopy

Topics in Drinking Water
Oral Presentation

Prepared by J. Gandhi1, J. Sheffer2, T. Anumol3
1 - Metrohm USA, 15421 Vantage Parkway W, Ste 150, Houston, TX, 77032, United States
2 - Metrohm USA, 6555 Pelican creek Circle, Riverview, FL, 33578, United States
3 - Agilent Technologies, , Willmington, DE, United States


Contact Information: jgandhi@metrohmusa.com; 713-202-8363


ABSTRACT

Perchlorate salts are being used as rocket propellants, in fireworks and in electroplating industry among others. Since last decade, Perchlorate ion is analyzed in various matrices using various Ion Chromatography methods. In addition, studies from NSF and CDC concluded safe levels of Perchlorate intake per day for an adult human. Recently, Perchlorate is on radar for USEPA to regulate in drinking water with low g/L levels being considered. This presentation will encompass comprehensive analysis scheme for Perchlorate including pros and cons of each of the existing USEPA methods like simple isocratic anion exchange with conductivity (USEPA 314.0) and hyphenated technique like ICMS, ICMSMS. Data from a newer method using both suppressed conductivity and tandem mass spectrometry with direct injection of water will also be shown.