HEDPA, PBTC and NTP

Application Note: 479 Quantification of Polyphosphonates and Scale Inhibitors in High Ionic Strength Matrix Effluents Using IC-MS/MS Charles Yang1, Stacy Henday2, Leo Wang2, and Bill Schnute2 1 Thermo Fisher Scientific, San Jose, CA; 2Dionex Corporation, Sunnyvale, CA Key Words •…

Application Note 162 Determination of Nucleotides by Ion Chromatography with UV Absorbance Detection INTRODUCTION Nucleotides are negatively charged ionic molecules consisting of a nitrogenous organic base, a 5-carbon pentose sugar, and phosphoric acid. Figure 1 shows the five common bases…

Lipika Basumallick and Jeff Rohrer Thermo Fisher Scientific, Sunnyvale, CA, USA Introduction Chromates are oxyanions (e.g., CrO , Cr2O ) of chromium in oxidation state +6. All hexavalent chromium Cr(VI) compounds are strong oxidizing agents and considered toxic and potentially…

Evaluation of the Current Capabilities of Ultra High Pressure LC and High Temperature LC William Hedgepeth, Masatoshi Takahashi, Shimadzu Scientific Instruments Introduction UHPLC is becoming an increasingly popular technique for sample analysis due to the ability to reduce analysis times…