To observe the selectivity of B towards TNP, we carried out the fluorescence titration experiments with similar amount of 150 [micro]M other nitroderivatives, namely,
nitrotoluene (NT), 2,4-dinitrotoluene (2,4 DNT), and 1,4-dinitrobenzene (1,4 DNB) and anions ([F.sup.-], [Cl.sup.-], [Br.sup.-], [I.sup.-], O[H.sup.-], HS[O.sub.3.sup.-], C[N.sup.-], N[O.sub.3.sup.-], C[H.sub.3]CO[O.sup.-], Cl[O.sub.4.sup.-], and P[O.sub.4.sup.-]) with tetrabutyl ammonium as counter ion, and observed no significant change in the emission spectrum of B depicting the selectivity of B (Figure 2).
Lijun and Wenju [98] used the phosphoric acid microwave method to prepare a kind of SBAC which had a large surface and abundant extension holes and studied the adsorption of SBAC to three
nitrotoluene red water.
Several agents belonging to the group of ARHC solvents, such as styrene or agents deriving from benzene and toluene (pentachlorobenzene, trichlorobenzene, HCB,
nitrotoluene), have been classified in the priority list of EDCs by the European Commission (European Commission DG ENV 2000).
They were: cobalt-tungsten carbide, which is used to make cutting and grinding tools, dyes, and other products for a broad spectrum of industries including mining; captafol, a fungicide banned in the United States in 1999;
nitrotoluene, a chemical used to make azo and other dyes, agricultural chemicals, pharmaceuticals, and other compounds; and certain inhalable glass wool fibers.
By refluxing the reaction mixture and azeotropically distilling off [H.sub.2]O-aromatic mixture until no remaining HN[O.sub.3] could be detected, they obtained nitrotoluene yields upto 80 % with a product distribution of o, m, p at 56, 4, 40.
Past literature on product distribution in toluene nitration has shown that the relative reactivity of o, m, p isomers of nitrotoluene is proportional to the electron availability at the active sites of the catalyst and the relative probability of their collision with a nitronium ion (Haouas et al., 2000).
Nitrotoluene destruction by UV-catalyzed Fenton reaction.
[21] applied UV-assisted Fenton oxidation to degrade nitrotoluenes in water.
o- and p-Nitrotoluene--The ortho- and para- isomers of
nitrotoluene are widely used in production of agricultural and rubber chemicals and a variety of dyes for cotton, wool, silk, leather, and paper, o-Nitrotoluene yielded clear evidence of carcinogenic activity in all four sex/species groups, producing skin and mammary gland neoplasms in male and female rats and hemangiosarcomas and large intestine carcinomas in male and female mice.