Environmental analysis aromatic amines

Combinations of online procedures are often employed in environmental applications. Examples include the analysis of trace metal ions in factory wastewater by a combination of cation-selective exhaustive injection (CSEI) (a form of stacking, CZE format) and sweeping. In this latter case, sweeping was promoted by dynamic complexation with EDTA, used as carrier. The same CSEI principle has also been applied to the analysis of quaternary ammonium herbicides and environmentally relevant aromatic amines in water, both followed by sweeping with SDS. 

Fluorescence is much more widely used for analysis than phosphorescence. Yet, the use of fluorescent detectors is limited to the restricted set of additives with fluorescent properties. Fluorescence detection is highly recommended for food analysis (e.g. vitamins), bioscience applications, and environmental analysis. As to poly-mer/additive analysis fluorescence and phosphorescence analysis of UV absorbers, optical brighteners, phenolic and aromatic amine antioxidants are most recurrent [25] with an extensive listing for 29 UVAs and AOs in an organic solvent medium at r.t. and 77 K by Kirkbright et al. [149]. 

Bowman MC, Rushing CR. 1981. Trace-level determination of benzidine, 3,3 -dichlorobenzidine in animal chow wastewater and human urine. In Egan H, ed. Environmental carcinogens - selected methods of analysis. Volmne 4. Some aromatic amines and azo dyes in the general and industrial environment. Lyon, France International Agency for Research on Cancer, 159-174. 

L. Fishbein u. H. Egan, Environmental Carcinogens, Selected Methods of Analysis, Vol. 4 Some Aromatic Amines and Azo Dyes in the General and Industrial Environment, International Agency for Research on Cancer. 1RAC, Lyon 1981. 

From the selectivity point of view, LC-NMR coupling is especially suited to the analysis of compound classes such as nitroaromatics, phenols, aromatic amines, aromatic carboxylic acids, polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and azo- and anthraquinone dyes. Another advantage of LC-NMR coupling for the investigation of aromatic compounds in environmental samples is that the position of substituents on the aromatic ring, e.g. in unknown metabolites or degradation products, can best be determined by NMR spectroscopy. 

Mass spectrometry (MS) has become the detector of choice for many laboratories due to its sensitivity, selectivity, and a wide range of applicability to environmental analysis. Most environmental compounds listed for other detectors can also be analyzed on the MS at equal or better sensitivity. Analytes included PAH, aromatic amines, nitrobenzenes, phthalates, and volatiles. 

El-Bayoumy, K., M. O Donnell, and D. Hoffmann Determination of aromatic amines in sidestream smoke by gas chromatography in Environmental carcinogens. Method of analysis and exposure measurement. Passive smoking, edited by l.K. O Neill, K.D. Brunnemann, B. Dodet, and D. Hoffmann, lARC, Lyon, France, lARC Sci. Publ. No. 81 (1987) 269-277. 

Despite the high sensitivity of amperometric detection, its use in environmental applications has not been exploited accordingly. Nevertheless, a few examples include the MEKC analysis of herbicides in tap water and the CZE and MEKC analysis of aromatic amines in contaminated water samples. ... 

Kalyuzhnyi S, Sklyar V, Mosolova T, Kucherenko I, Russkova J, Degtyaryova N (2(XX)) Methanogenic biodegradation of aromatic amines. Water Sci Technol 42(5-6) 363-370 Kataoka H (1996) Derivatization reactions for the determination of amines by gas chromatography and their applications in environmental analysis. J Chromatogr A 733 19-34. SSDI... 

The improved analytical performance of a diamond electrode for CE ED analysis has broadened the range of target chemicals to include many biologically and environmentally important compounds that exhibit high oxidation potentials and serious fouling problems. The CE-ED analysis of aromatic amines [13]... 

Although unified chromatography still has to find its own applications niche, it has been already used for the analysis of a wide variety of samples from aromatic hydrocarbons, styrene, esters, phthalates, crude oil, amines, household wax, pesticides in vegetable oils and many others [11,14-16]. Its major application in the near future will certainly be centered in the analysis of complex samples such as environmental samples, biological fluids, forensic chemistry, and so forth. In this case, there is a need for more than one separation mode because the sample might contain volatile, semi-... 

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