Determination of Nitrate and Nitrite in Water Samples Using Gallery Automatic Discrete Analyzer
HAO Hong1, ZHOU Huai-dong1, GAO Bo1*, LIU Qian-qian2, LU Jin1, GAO Ji-jun1, YUAN Hao1
1. China Institute of Water Resources and Hydropower Research, Department of Water Environment, Beijing 100038, China 2. Thermo Fisher Scientific (China) Inc., Beijing 100007, China
Abstract:Thermo Scientific Gallery Automatic Discrete Analyzer is special for water analyzing, and can automatically run steps includeing sample and reagents dispensing, water blank, mixing and incubation, Colorimetric reading and data processing. This method refers to U.S. Environmental Protection Agency. The instrument has advantage in low sample and reagents consumption, sensitivity and repeatability; test process can be automatic, standardized and informationized, and is applicable to multitudinous sample testing in water qualities and environmental monitoring.
Key words:Nitrite;Nitrate;Photometric;Automatic discrete technology;Surface water
[1] U.S. EPA Office of Ground Water and Drinking Water/Technical Support Center. Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1-300.1, Rev 1.0 Determination of Inorganic Anions in Drinking Water by Ion Chromatography, (NSCEP PB 815-R-00-014), 1997. [2] American Public Health Association. Standard Methods for the Examination of Water and Wastewater, 20th Edition-4500-NO<sub>3</sub>-H Automated Hydrazine, Washington, DC, 1998. [3] U.S. EPA National Exposure Research Laboratory. Methods for Chemical Analysis of Waters and Wastes-Nitrite 353.1, Nitrogen, Nitrate-Nitrite (Colorimetric, Automated Hydrazine Reduction, EPA-600/4-79/020(NTIS PB 84-128677), Issued 1971; Reissued with Revision 1978. [4] U.S. EPA National Exposure Research Laboratory. Methods for Chemical Analysis of Waters and Wastes -Nitrate 353.2, Rev 2.0 Determination of Nitrate-Nitrite Nitrogen by Automated Colorimetry, EPA-600/R93/100(NTIS PB 84-120821), 1993. [5] U.S. EPA National Exposure Research Laboratory. Methods for Chemical Analysis of Waters and Wastes -Nitrate 300.0, Rev 2.1 Determination of Inorganic Anions by Ion Chromatography, EPA-600/R93/100(NTIS PB 94-120810), 1993.