Method for automatic assay of anionic detergents in seawater
US8105837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/182
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for assaying anionic detergents in seawater comprises: (1) flow a sample through a sample system and an analysis-detection system; flow a reference solution through a reference system, a valve, and the analysis-detection system; where the sample and reference are mixed; and flow the mixture into an optical cell to produce a baseline, (2) flow a sample through the sample system and analysis-detection system; flow a buffer through a buffer system and a color developing system; where the buffer and a color developer are mixed; and flow the resulting mixture through the valve and analysis-detection system; where the sample is mixed with the buffer and developer mixture; and flow the resulting mixture into the cell to produce the sample spectrogram, (3) repeat (1) and (2) with standards of known detergent concentrations for corresponding spectrograms, and (4) compare the sample spectrogram with the standard spectrograms to determine the sample detergent content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.