AN1088: Determination of Thiosulfate and Pyrophosphate in Crayfish Wash Powder

Instrument Type: ICMS

To make crayfish look more attractive to consumers, they are often cleaned with wash powder, and it is this wash powder that is suspected of causing the problems associated with excessive ingestion of crayfish. The reported harmful ingredients of crayfish wash powder are thiosulfate and phosphaterelated compounds. IC/MS was applied to the analysis of components in crayfish wash powder and an effective method was developed using the Thermo Scientific Dionex ICS-4000 Integrated Capillary HPIC System and the Thermo Scientific TSQ Vantage Triple Stage Quadrupole mass spectrometer.

AU140: The Determination of Iodide in Urine

Instrument Type: IC

In this Application Update, ion chromatography coupled with pulsed amperometric detection is used to determine iodide in urine. This method is specific, sensitive, and rapid. Sample preparation involves removal of urine components with molecular weights greater than 10,000 daltons, sample dilution, and treatment with a polymeric, reversed-phase cartridge (OnGuard™-RP).

Improved assay for pramoxine in topical anesthetic ointment on a Thermo Scientific Acclaim 120 C18 column with SPE clean-up

Instrument Type: HPLC

The Thermo Scientific Acclaim 120 C18 column is applied for an assay for pramoxine in topical anesthetic ointment. SPE clean-up is performed using Thermo Scientific Dionex OnGuard II RP cartridge.