Fully automated system for the continuous monitoring of ammonium ion in fish farming plant sea water by flow-injection analysis

Grain Yield and Related Physiological Characteristics of Rice Plants (Oryza sativa L.) Inoculated with Free-Living Rhizobacteria

“…Dry matter weights of different plant parts were determined after drying at 80oC for 72 h in an air-forced oven. Nitrogen content was measured by the Kjeldahl method as modified by Muraki et al (1992).…”

In situ flow-injection monitoring of ammonia in landfill leachate

“…However, such devices can suffer from biological fouling and physical scouring of the sensing surfaces, chemical interferences, and instrument drift. An alternative approach that has been successfully used to analyze a wide range of analytes, e.g., nitrate [5,6], orthophosphate [7,8], ammonia [9,10], aluminum [11], and glucose [12], in automated monitoring systems is flow injection (FI) in conjunction with solid-state spectrophotometric detection. FI is characterized by its simplicity, low cost, high sampling rate (60-100 h ‫1מ‬ ), low reagent consumption (1-3 mL min ‫1מ‬ ), small sample volumes (10-500 lL), and good reproducibility.…”

Sensitivity Improvement of Ammonia Determination Based on Flow-Injection Indophenol Spectrophotometry with Manganese(II) Ion as a Catalyst and Analysis of Exhaust Gas of Thermal Power Plant

“…A spectrophotometric FIA using sodium salicylate was applied to the determination of ammonia in the exhaust gas of a thermal power plant. 6 In a method with salicylic acid and hypochlorite, [4][5][6] nitroprusside has been used as a catalyst. The nitroprusside is a very useful reagent for a sensitivity enhancement of ammonia determination.…”

“…[2][3][4][5][6] The reactions with phenol-hypochlorite reagents show a relatively high sensitivity and selectivity for ammonia determination. Of the phenolhypochlorite reagents, a salicylic acid-hypochlorite reagent is most promising with respect to the chemical stability of the reagent used and the sensitivity for ammonium ion.…”