Patent ID: 8778691
Filing Date: 2014-07-15
Classification: G01N,Y10T

Abstract:
1. A method for measuring bromate ions in a sample, comprising the steps of: mixing trifluoperazine with the sample, wherein fluorescence emission from trifluoperazine is quenched in the presence of bromate ions under acidic conditions; measuring florescence intensity emitted from the mixture of trifluoperazine and the sample under acidic conditions; subtracting the measured fluorescence intensity emitted from the mixture of trifluoperazine and the sample from a measured fluorescence intensity emitted from a standard sample that does not contain bromate ions to calculate a fluorescence intensity difference; and determining the bromate ion concentration in the sample from the calculated fluorescence intensity difference using a pre-determined calibration line that relates fluorescence intensity difference with bromate ion concentration, wherein the method further comprises a step of adding a chelating agent to the sample before the step of mixing trifluoperazine and the sample, and wherein the chelating agent is ethylene diamine tetraacetate.