EDTA method

Lee S, Lim Y, Lee EA, Hwang HJ, and Moon JW. Ba0 5Sr05Co0 8Fe02O3 5 (BSCF) and Lao6Ba04Co02Fe0803 5 (LBCF) cathodes prepared by combined citrate-EDTA method for IT-SOFCs. J. Power Sources 2006 157 848-854. 

Die Oxidation von Aminen mit einem Gemisch aus Natrium-percarbonat (NPC) und Ethylendiamin-tetraessigsaure (EDTA) (Methode ) oder Peressigsaure (Methode ) fiihrt zur Nitroso-Verbindung, die durch Ozon zur Nitro-Verbindung oxidiert wird. So wird 1-Amino-adamantan in 94-95%iger Ausbeute zu 1-Nitro-adamantan oxidiert1 ... 

Calcium was determined by an EDTA method carbon and hydrogen by the combustion method total nitrogen by the Kjeldahl method sulfur by the Eschka method infrared spectra by the potassium bromide pellet technique. 

Determined by the method of Kondo and Ohsawa (K42). with correction for other phases undissolved except for Ref L27, for which an EDTA method was used. 

Cd + can be detected by the insolubility of its yeUow sulfide (see Analytical Chemistry of the Transition Elements). Several reaction and spot tests allow the identification of Cd +. Quantitative determinations are based on gravimetric (CdS or /3-naphthylquinoltne complex) or titrimetric (EDTA) methods. Several physical techniques can be used in quantitative and qualitative analysis polarography (or related techniques, even in the presence of Zn, Cu, Bi and Pb), electrodeposition, colorimetric methods, flamephotometric methods, neutron activation, atomic absorption, and ICP spectrometry and ion selective electrodes. 

However, it is still debatable which method most accurately predicts individual values of glomerular filtration rate or creatinine clearance. Whereas the Cr-EDTA method is the most accurate method of estimating... 

Some divalent metal ions can interfere including bariiun, cadmium, lead, manganese, strontium and zinc. These are titrated as hardness. In addition aluminum, cobalt, iron and nickel can interfere with the end point. This interference becomes more severe when phosphates are present above 10 mg k. If these metals are present at significant levels, non-EDTA methods for hardness are preferred. 

The chromate method has been applied for determining chromium in, for example, steels [26], catalysts [92], and natural waters [93,94]. The EDTA method was used for determining Cr in soils and refractory materials [95] and in ores [96,97]. 

Al, Si Digestion with concentrated sulphuric acid-chromic acid in current of oxygen. Silicon determined volumetrically as Na2SiF6. Aluminium determined by titrimetric EDTA method. 

Al, Si, P Digestion with diethyl ether-concentrated sulphuric acid-potassium persulphate. Silicon determined gravimetrically. Aluminium determined by titrimetric EDTA method. Phosphorus determined by spectrophotometric molybdenum blue method. 

Synthesis of 25 A mixture of 3 g silica and 25 g octadecyldimethyl[3-(trimethoxysilyl)propyl]ammonium chloride in 50 mL methanol and 5 mL toluene was heated at 70 °C with stirring for 24 h. After separation from the mixture, the modified silica was washed with methanol and dried at 70 °C under vacuum. The modified silica was added to a hydrobromic acid solution of molybdenum trioxide. The mixture was stirred and the precipitate was filtered, washed with methanol and dried under vacuum. The halogen content was obtained by the Volhard method. Molybdenum was analyzed by the EDTA method. The resulting polymer-bound catalyst is used in oxidation reactions. 

Standard Test Method for Determination of Cobalt in Paint Driers by EDTA Method... 

Fig. 11. A. Typical aspect of a cluster of interchromatin granules in normal rat liver nucleus. Glutaraldehyde>Epon, EDTA method chr, bleached chromatin ->, perichromatin granules fibrils ig interchromatin granules. X42,300. B. Cluster of interchromatin granules in the nucleus of an adrenal cortex cell from normal rat. Glutaraldehyde-Epon, EDTA method. The granules are irregularly shaped and have a striking tendency to form chainlike aggregates. small rods may be found,...

Masking, competition of other ligands for the metal ion in EDTA methods, can be treated by similar steps. 

Two experiments were designed for freshmen taking General Chemistry II Laboratory, both analyzed for the hardness of drinking water samples. Procednres were adopted from previonsly pnblished work and Standard Methods for the Examination of Water and Wastewater (25-27). The first method of analysis for water hardness utilized EDTA as titrant and Eriochrome Black T as metal ion indicator. Similar protocols and applications of the EDTA method have been published previously (14-21, 25). The second method ntilized flame atomic absorption spectrophotometiy (FAAS) and was also adopted from the Standard... 

The EDTA method is sensitive enough to allow the determination of calcium in serum. 

When this method is applied to a substance such as bismuth carbonate a result wffiich is as much as 1 per cent lower than that obtained by ignition may be expected this is due to the fact that the EDTA method gives bismuth alone, whereas the residue after ignition will also contain the alkali and alkaline earth metals which are usually present. 

The magnesium sulphate can be determined directly by the EDTA method given under Magnesium Sulphate, taking 10 ml of a solution of 5 g of the sample in 100 ml of water. 

Various EDTA methods have been suggested for the determination of... 

The above EDTA method for mercury is specific and is discussed on... 

Most accurate results arc obtained by calculation from complete mineral analysis of the hard water sample (Equation 3.28) but it is a very tedious job and such type of analysis is rarely done. Of all other methods, EDTA method gives the best results, is less cumbersome and less time consuming. 

The studied materials were obtained by soft chemistry EDTA method, details of the procedure can be found elsewhere [29]. In Fig. 5 an exemplary x-ray dif-fractogram of Lao.4Sro.6Coo.2Feo.g03 5 is presented. While initial XRD studies... 

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