Analysis of Ammonia

G. A. Kowalchuk, J. R. Stephen, W. DeBoer, J. 1. Prosser, T. M. Embley, and J. W. Woldendorp, Analysis of ammonia-oxidizing bacteria of the beta subdivision of the class Proteobacteria in coastal sand dunes by denaturing gradient gel electrophoresis and sequencing of PCR-amplified I6S ribosomal DNA fragments. Appl. Environ. Microbiol. 6.1 1489 (1997). 

The analysis of soils and plant material are common examples used to demonstrate ICP applications. Dahlquist and Knoll(43) compared the preparation and ICP analyses of botanicals (16 elements) and soils (11 elements) with few exceptions the ICP values for the CII botanicals were in excellent agreement with the assigned values, and the soil analyses were in excellent agreement with FAA analyses of soil digests. )ones( 4) reported the analysis of 17 elements in plant material and soils but confirmation of the two analyses was not given. Alder, et. aJ.(75) describe the unique analysis of ammonia-nitrogen in soils by gas evolution into an ICP no interferences were observed from the concomitants evaluated and acceptable recoveries were obtained. Irons et. al.(76) compared the ICP analyses of 13 elements in NBS orchard leaves and bovine liver to the data obtained by FAA and energy dispersive x-ray. 

Mercury(II) iodide is used as an analytical reagent, in Nesslers reagent for the analysis of ammonia. The compound also is used in ointments for the treatment of skin diseases. 

Analysis of Ammonia A612-R A303 Analysis of Sodium Metal A612-R... 

Tecator Ltd. [16] have described a flow injection analysis method for the determination of 0.2 -1.4 mg/1 (as NH3N) of ammonia nitrogen in soil samples extractable by 2 M potassium chloride. The soil suspension in 2 M potassium chloride is centrifuged and filtered and introduced into the flow injection system for the analysis of ammonia (and nitrate) one parameter at a time. Ammonia is determined by the gas diffusion principle, in which a PTFE membrane is mounted in the gas diffusion cell. 

Table I. Framework Composition and Quantitative Analysis of Ammonia Desorption Experiments for SAPO Molecular Sieves...

Bothe, H.,Jost, G., Schloter, M., Ward, B. B., and Witzel, K. P. (2000). Molecular analysis of ammonia oxidation and denitrification in natural environments. FEMS Microbiol. Rev. 24, 673-690. 

Phillips, C. J., Pard, E. A., and Prosser, J. I. (2000). Quantitative analysis of ammonia oxidising bacteria using competitive PCR. FEMS Microbiology Ecology 32, 167—175. 

The ammonia synthesis reaction is one of the most widely studied reactions and it has been discussed previously in this text. (See Example 1.1.1, Table 5.2.1, and Section 5.3.) In this section, results from the microkinetic analysis of ammonia synthesis over transition metal catalysts containing either iron or mthenium will be presented. 

A microkinetic analysis of ammonia synthesis over transition metals is presented in Section 7.3. Use the results of that analysis to explain how adsorbed nitrogen atoms (N ) can be the most abundant reaction intermediate on iron catalysts even though dissociative chemisorption of N2 is considered the rate-determining step. 

The standardization of ammonia caramek presents a special task. In the course of the manufacture of caramek in the presence of ammonia and ammonium compounds, 4(S)-methylimidazole is formed, and it is neurotoxic. Its content " in caramel is limited by the Food Laws of several countries (for instance, in Austria and the United Kingdom ) and by the WHO r jdations (see also articles by Thier and Wood ). (The specification and analysis of ammonia caramek manufactured in the United... 

Arkinson, H.L., Measurements, Modeling, and Analysis of Ammonia Flux from Hog Waste treatment technologies, M.S. Thesis, pp.l29, 2003. 

Determining low level concentrations of atmospheric ammonia in the presence of ammonium salts is difficult. Recently, investigators have been establishing new methods for the analysis of ammonia in the presence of ammonium compounds (see Chapter 7, Anal5riical Methods). If highly accurate values for low levels of ammonia are necessary, then a re-evaluation of older literature values might be necessary. 

Aneja VP, Murthy AB, Battye W, et al. 1998. Analysis of ammonia and aerosol concentrations and deposition near the free troposphere at Mt. Mtichell, NC, USA. Atmos Environ 32(3) 353-358. 

Complete technoeconomic analysis of ammonia-borane complex as a hydrogen storage compound for fuel cell applications. 

Graham, B., K. Wagner, and D. Champaneri Analysis of ammonia and cyanide in cigarette smoke, total alkaloids, ammonia, nitrates, and reducing sugars in tobacco filler with an automated spectrophotometer ... 

Fig. 1. Differential thermal analysis of ammonia-precipitated chromic oxide gel-----, Air dried.----, Oven dried. 

J.U. Nwalor, Isotopic Transient Kinetic Analysis of Ammonia Synthesis Catalysis. Ph.D. Dissertation, University of Pittsburgh, Pittsburgh, 1988. 

Davies S., Spanel R, and Smith D., Quantitative analysis of ammonia on the breath of patients in end-stage renal failure. Kidney Int., 52, 223-228, 1997. 

S. Dahl, J. Sehested, C. Jacobsen, E. Tornqvist, and I. Chorkendorff, Surface science based microkinetic analysis of ammonia synthesis over ruthenium catalysts, Journal of Catalysis, vol. 192, pp. 391-399,2000. 

Figure 10.152 Trace analysis of ammonia in conductivity preconcentrated voiume 5 mL ...

Davies SJ, Spanel P, Smith D. Breath analysis of ammonia, volatile organic compounds and deuterated water vapour in chronic kidney disease during dialysis. Bioanalysis. 2014 6 843-57. 

Alagham, V, Palanki, S. West, K.N. Analysis of ammonia decomposition reactor to generate hydrogen for fuel cell applications. J Power Sources 195 (2010), pp. 829-833. 

Gibb, S. W., R. F. C. Mantouraa, and R S. Liss. 1995. Analysis of ammonia and methylamines in natural waters by flow injection gas diffusion coupled to ion chromatography. Anal. Chim. Acta 316(3) 291-304. 

Tashiro s Indicator. The stock solution is made by mixing 200 ml. of 1 per cent, alcoholic methyl red with 50 ml. of 0-1 per cent, alcoholic methylene blue. Both dyes must be dissolved in pure alcohol. For use, 1 part of stock solution is mixed with 1 part of alcohol and 2 parts of distilled water. This is an example of a screened indicator, or one in which the colour change is made more distinct by addition of a second pigment (methylene blue) to cut out part of the spectrum. The indicator is used in the Conway methods for the micro-analysis of ammonia and urea. 

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