Nitriloacetic acid

Nickel, sepn. of plus cobalt, (cm) 583 Nickel ware 96 Nioxime 439, 474 NITA (nitriloacetic acid) 57 Nitrates, D. of as nitron nitrate, (g) 484 by ammonium iron(II) sulphate, (am)... [Pg.869]

Various complexes of transition metals and nitriloacetic acid Various diols and diacids 186... [Pg.70]

Precipitation of Fe(IIl) compounds from acid solutions as the pH increases above 2.2 is a particular problem. Complexing agents that have been used include 5-sulfosalicylic acid and citric acid (136) dihydroxymaleic acid (137) ethylenediaminetetraacetic acid (138) lactic acid (138) blends of hydroxylamine hydrochloride, citric acid, and glucono-delta-lactone (139) nitriloacetic acid blends of citric acid and acetic acid lactic acid and gluconic acid (140). [Pg.23]

Citric acid and nitriloacetic acid (NTA) lanthanide complexes were used in the earliest ion exchange separations of lanthanides from fission product mixtures (Kf = 3.2 for Ce(H3 Cit.)3 and Kf = 10.8 for CeNTA2) (Sillen and Martell, 1964). More recently such polyamino-polycarboxylic acids as ethylenediaminetetraacetic acid (EDTA), 1,2-diaminocyclohexaneacetic acid (DCTA), and diethylenetriaminepentaacetic acid (DTPA) have been prepared. Their lanthanide complexes are very stable (Table 3) and have been widely used in analysis and separation of lanthanide mixtures. They have also been used experimentally to remove internally-deposited 144Ce and other radioactive lanthanide nuclides from animals and man (Foreman and Finnegan, 1957 Catsch, 1962 Balabukha et al., 1966 Palmer et al., 1968 among others). [Pg.4]

Ethylene Diamine Tetracetic Acid and Nitriloacetic Acid. . . ... [Pg.18]

Kinetics and activation parameters for NO reactions with a series of iron(II) aminocarboxylato complexes have been obtained (Table II) in aqueous solution (31). Rate constants for these reactions ranged from 105 to 108M-1s-1 for the series of iron(II) complexes studied. The reactions of NO with Fen(edta) (edta = ethylenediaminetetraacetate) and Fen(Hedtra) (Hedtra = hydroxyethylenediaminetriacetate) yielded activation volumes of +4.1 and +2.8 cm3 mol-1, respectively and were assigned to a dissociative interchange (Id) mechanism (31b). All of the iron(II) aminocarboxylato complexes studied followed a similar pattern with the exception of the Fen(nta) (Nta = nitriloacetic acid) complex which gave a AV value of —1.5 cm3 mol-1. The reaction of this complex with... [Pg.218]

Nitriloacetic acid reacts with vanadium-(m). -(iv), or -(v) oxides to form oxovanadatranetrionic acid (38). The crystal structure of [VO(CjQHgNO)2] (CjgHgNOH = 2-methyl-8-quinolinol) has shown that the vanadium atom has a five-co-ordinate trigonal-bipyramidal environment, with three oxygen atoms in the equatorial plane and the two nitrogen atoms of the bidentate ligand in the apical positions. The optimum conditions for the formation of a 1 2 2 vanadium(iv)-morin-4-aminoantipyrine system have been described as pH 5, a tenfold excess of morin (39), and a 3300-fold excess of 4-amino-antipyrine. ... [Pg.45]

In common with other sequential extraction procedures, the BCR scheme suffers from a degree of non-specificity (Whalley and Grant, 1994 Coetzee et d., 1995) and redistribution of analytes during extraction (Raksasataya et d., 1996). Some success in limiting lead redistribution by addition of cryptand 2.2.2 or nitriloacetic acid to the acetic acid in Step 1 has been reported, but the effectiveness of the complexing agent was found to be strongly dependent on the bulk composition of the model soil system studied (Raksasataya et d., 1997). [Pg.278]

The interference caused by chloride ion, Fe(III), and Cu(II) in the determination of nitriloacetic acid and EDTA in natural waters was removed by pre-treating samples (pH > 4) with cation exchangers. Some samples required additional treatment with an anion exchanger (pH 1). The analytes were complexed with Bi (III) before being determined by differential pulse anodic stripping voltammetry at the hanging mercury drop electrode (vs. Ag/AgCl. The detection limit was 0.1 pg/L for EDTA. [Pg.83]

Warren and Malec [80] determined nitriloacetic acid and related amino polycarboxylic acids (iminodiacetic acid, glycine and sarcosine in inland waters and sewage effluents by converting to the butyl or A-trifluoracetyl esters followed by chromatography on dual glass U-shaped columns (1.9mx2mm) packed with 0.65% of ethanediol adipate on acid-... [Pg.268]

Nitriloacetic acid 2% poly(ethanediol) on Chromosorb W Nitroacetic acid converted to trimethyl ester prior to GLC 25pgL [335]... [Pg.305]

Nitriloacetic acid Concentration on ion exchange column Nitriloacetic acid esterified with formic acid, conversion to butyl esters then GLC 0.71 pg L 1 [336]... [Pg.305]

Nitriloacetic acid Nitriloacetic acid converted to trimethyl silyl ester IhgL-1 [337]... [Pg.305]

Other organic compounds that have been determined in sewage effluents include the following (see Table 15.13) hydrocarbons, alcohols, carboxylic acids, esters, chlorobenzenes, nitrosamines, ethylene diamine tetraacetic acid, nitriloacetic acid, organophosphorus compounds, linear alkyl benzene sulphonates, methyl mercaptan, polychlorobiphenyls and chlorinated insecticides. [Pg.333]

Gas chromatography has been applied to the determination of a wide range of organic compounds in trade effluents including the following types of compounds which are reviewed in Table 15.15 aromatic hydrocarbons, carboxylic acids aldehydes, non ionic surfactants (alkyl ethoxylated type) phenols monosaccharides chlorinated aliphatics and haloforms polychlorobiphenyls chlorlignosulphonates aliphatic and aromatic amines benzidine chloroanilines chloronitroanilines nitrocompounds nitrosamines dimethylformamide diethanolamine nitriloacetic acid pyridine pyridazinones substituted pyrrolidones alkyl hydantoins alkyl sulphides dialkyl suphides dithiocaibamate insecticides triazine herbicides and miscellaneous organic compounds. [Pg.337]

Nitriloacetic acid - Capillary -column Extract acetylated then converted to trimethyl ester, then GC-MS [45]... [Pg.406]

Nitriloacetic acid - These compounds converted to methyl esters, then GC-MS sub ppb [47]... [Pg.406]

Other uses include ferrocyanides (for blue jeans), acrylates, lactic acid, nitriloacetic acid (NTA), pharmaceuticals and specialty chemicals. [Pg.360]

DDT was banned as an insecticide as early as 1974 by most industrial nations. But it is still widely used in many developing countries. The risks of eutrophication are perceived differently by governments, so that legislation applying to products for the production of detergents, like alkylbenzene sulfonate, tripolyphosphate, or nitriloacetic acid (NTA) differs from country to country. [Pg.13]

The biochemical reaction performed by the methyltransferase appears to be metal dependent, as determined by chemical inhibition studies, but the exact identity of this metal has yet to be defined [41]. EDTA treatment had no inhibitory effect on Stel4p, but incubation of the protein with 10 - 50 mM of the metal chelating agent 1,10-phenanthroline eliminated catalytic activity [37,41]. Additionally, even more hydrophobic metal sequesterants such as zincon [37], lysine nitriloacetic acid (Lys-NTA) [42], and cholesteryl-Lys-NTA [43] also inhibited the methyltransferase but at much lower concentrations. Together, these data suggest that the metal ion may be buried in a hydrophobic region of the enzyme. [Pg.211]

A-ethylmaleimide sensitive factor National Science Foundation A-ethylmaleimide-sensitive fusion Nucleotide Nitriloacetic acid... [Pg.16]

Ni-nitriloacetic acid (Ni-NTA) Histidine-tagged protiens (His6-Pr)... [Pg.95]

SYNS N,N-BIS(CARBOXYMETHYL)GLYCINE TRISODIUM SALT MONOHYDRATE NCI-C01445 NITRILOACETIC ACID TRISODIUM SALT MONOHYDRATE NTA SODIUM HYDRATE TRISODIUM NITRILOTRIACETATE MONOHYDRATE... [Pg.1003]

NITRILOACETIC ACID TRISODIUM SALT MONOHYDRATE see NEIOOO NITRILOACETONITRILE see COOOOO NITRILOTRIACETIC ACID see AMT500 NITRILOTRIACETIC ACID, DISODIUM SALT see DXFOOO... [Pg.1804]

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