Diethylene triamine pentaacetic acid DTPA

Diethylene triamine pentaacetic acid (DTPA) (chelating agent to protect peroxygen bleach) 0.77 wt. %... 

Stripping solutions contain large amounts of guanidine carbonate (0.5-1 M) and diethylene-triamine-pentaacetic acid (DTPA) (124). Though,... 

The micronutrient cations can be estimated in a single extraction with diethylene triamine pentaacetic acid (DTPA) which has excellent chelating property with the micronutrient elements. Adequate precaution must be taken against any likely contamination from the reagents and glass wares in micronutrient assay work. Only double distilled water should be used. Specific hallow cathode lamps for each elements are used on AAS and requisite standards for instrument calibration are prepared as per instructions in the operation manual. 

Fig. 12. Trace element/Ca ratios of foraminifera subject to different cleaning procedures, (a) Mn/Ca, (b) Mg/Ca and (c) Sr/Ca. Samples cleaned using procedure A were subject to ultrasonication in methanol, oxidation and a weak acid leach. Those cleaned using procedure B were subject to additional reductive cleaning, and those cleaned using procedure C were subject to additional reductive cleaning as well as cleaning in DTPA (diethylene triamine pentaacetic acid). DTPA removes refractory phases rich in Ba and the rare earth elements (e.g. Haley Klinkhammer 2002). Note that the introduction of the reductive cleaning step significantly lowers Mn/Ca and also lowers Mg/Ca. Reductive cleaning has no resolvable effect on Sr/Ca. DTPA has little effect on Mn/Ca, Mg/Ca or Sr/Ca. Error bars (where visible) represent the standard deviation of the mean of two (0. universa) or three (G. conglomerata) separate analyses. Data are from Hathorne (2004).

Figure 12.9 shows the effect of oxidizing and reducing conditions (redox potential) on the distribution of copper among several selected forms in river sediment. Under oxidized conditions, the copper was primarily tied up with iron because the extractant nsed to remove the reducible fraction primarily extracts the iron fonnd in the insoluble ferric form that is microbially reduced to a more soluble ferrous form, which would release bound copper. The insoluble organic copper decreases as the amount of copper coprecipitated with the increase in iron oxidation. The diethylene triamine pentaacetic acid (DTPA) extractable Cu showed little change with redox condition. 

Genwa KR, Khatri NC (2009) Comparative study of photosensitizing dyes in photogalvanic cells for solar energy conversion and storage Brij-35-Diethylene-triamine Pentaacetic Acid (DTPA) system. Energy Fuel 23 1024... 

Synonyms Calcium diethylene triamine pentaacetic acid Calcium DTPA Calcium pentetate Calcium trisodium diethylene triamine pentaacetate Diethylenetriamine pentaacetic acid, calcium trisodium salt Pentetate calcium trisodium Pentetate trisodium calcium Trisodium [(carboxymethyl) imino] bis (ethylenenitrilo) tetraacetate Empihcal CuHisCaNsNasOio Formula CaNasCuHisNaOio Properties Solid sol. in water insol. in alcohol m.w. 497.36... 

CAS 67-43-6 EINECS/ELINCS 200-652-8 Synonyms N,N-Bis [2-[bis (carboxymethyl) amino] ethyl] glycine N-Carboxymethyliminobis (ethylenenitrilo) tetra (acetic acid) Diethylene triamine pentaacetic acid 1,1,4,7,7-Diethylenetriaminepentaacetic acid DTPA... 

CALCIUM TRISODIUM DIETHYLENE TRIAMINE PENTAACETATE see CAY500 CALCIUM TRISODIUM DTPA see CAY500 CALCIUM TRISODIUM PENTETATE see CAY500 CALCIUM TRISODIUM SALT of DIETHYLENETRIAMINEPENTAACETIC ACID see CAY500... 

DMSA dimercaptosuccinic acid, EDTA ethylenediaminetetraacetic acid, HMPAO hexamethyl propyl-eneamine oxime, DADS J yM-bis(mercaptoacetyl)ethylenediamine, DADT diaminodithiol, ECD ethylcysteinate dimer, MAG3 mercaptoacetyltriglycine, NOEt Et(OEt)NCS2, DTPA diethylene triamine pentaacetate, MDP methylenediphosphonate, HIDA N-(2,6-dimethylphenylcarbamoylmethyl) iminodiacetic acid, DMPE l,2-bis(dimethylphosphino) ethane, BATO boronic acid technetium oxime, MIBI methoxyisobutyl isocyanide... 

Ethylenediamine tetraacetic acid (EDTA) and diethylene triamine pentaacetate (DTPA) are strong coordinating ligands that are administered to reduce in vivo toxicity of heavy metals. Nevertheless, the coordination behavior of EDTA and DTPA ligands with respect to technetium is rather complicated (Steigman et al. 1975). 

There were many investigations to explain the mechanism of reduction. Since direct chemical measurements are out of question at carrier-free concentrations of Tc (10 M), carrier technetium ( Tc) in hydrochloric acid was used to determine the oxidation state of technetium in diethylene triamine pentaacetate (DTPA) and in citrate solution. Polaro-graphic and iodometric techniques were used to analyze for unreacted stannous ion and to perform direct potentiometric titrations of pertechnetate-99 with stannous chloride (Mtinze 1980 Steigman et al. 1975). No quantitative kinetic studies had been made, but qualitative conclusions have been drawn for the reduction mechanism. Most probably, the first step is the reduction to Tc(V). Reduction to Tc(III) proceeds in two successive complementary reactions, both of which should be rapid in the low concentrations at radiopharmaceutical level ... 

MDP methylenediphosphonate, HSA human serum albumin, DMSA dimercaptosuccinic acid, DTPA diethylene triamine pentaacetate, HIDA hepatoiminodiacetic acid, EC ethylene dicysteine, HSA human serum albumin, MIBI monodentate methoxyisobutyl isocyanide, MAG3 mercaptoacetyltrigly-cine, ECO ethylene dicysteine dimer, HMPAO hexamethylpropylene amine oxime a eluate (370 MBq), Tc is not considered... 

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