Download e-book for kindle: Analytical Applications of EDTA and Related Compounds by R. Přibil, R. Belcher, H. Freiser

By R. Přibil, R. Belcher, H. Freiser

ISBN-10: 0080163637

ISBN-13: 9780080163635

Analytical purposes of EDTA and comparable Compounds examines the analytical purposes of ethylenediaminetetra-acetic acid (EDTA) and comparable compounds. This ebook additionally considers the “passive” function of those elements, that's, their screening (masking) homes, which enormously enhance the selectivity of the reactions in universal use.
This textual content contains six chapters geared up into sections. the 1st half bargains with the makes use of of EDTA and its derivatives in a few fields of chemical research. After offering an summary of the historical past in the back of the improvement of EDTA as an analytical reagent, this publication discusses to the character of equilibria of complexes and the equipment utilized in their research. the subsequent bankruptcy is devoted to the reactions of “classical” gravimetric research, together with the precipitation reactions by way of natural reagents. The bankruptcy on colorimetry features a part on “colored complexing agents,” that are used additionally in colorimetric determinations of a few parts. this article concludes via comparing using EDTA as a covering agent in colorimetry.
This e-book should be of curiosity to scholars and practitioners operating in analytical chemistry and comparable disciplines, together with polarography, chromatography, electrophoresis, flame photometry, and qualitative research.

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Abbreviations of the individual constants: CaHY = log [CaHY]/[Ca] [HY]; CaY = log [CaY]/[Ca] [Y]; Ca2Y = log [Ca2Y]/[CaY] [Ca]. 1;20°C TABLE X I V . 12 310 10-59 7-12 5-05 4-60 12-50 4-77 4-19 <0·7 <0·7 2 2-5 I II III — 2-3 2-52 Although N T A has the greatest complex-forming capacity amongst the acids in its series, j5-alanine-iV,iV-diacetic acid [19] ^ / C H 2 . CH2 . COOH HN--CH2. COO' \ C H 2 . COOH does not differ greatly in this respect. The complex forming capacity decreases, however, in the case of iV-carboxymethyl-iV,^-dipropionic acid a n d especially with tripropionic acid nitrile [75].

One can generally say that the stabihty constants (Table VIII) are ten to a thousand times larger t h a n those of E D T A . The estabhshment of the equihbrium of the complexes is relatively slow. The Polaro­ graphie half-wave potentials of the complexes are shown in Table IX. A complexing efficiency between that of E D T A and D C T A is given by diethylenetriamine-^, N , N ' , N ' , K-penta-acetic acid (DETPA), which is manufactured by Airóse Chemical Co. CH2\ + N H . CH2 . CH2 . Ν . CH2 . CH2 .

Acta 3 1 , 4 5 9 ( 1 9 4 8 ) . F R E O A G , E . , Helv. chim. acta 3 4 , 1 5 0 3 ( 1 9 5 1 ) . P . , / . Phys. Chem. 5 8 , 3 3 9 ( 1 9 5 4 ) . 55. 56. 57. 58. KOLTHOFF, L M . and AUERBACH, C , / . Am. Chem. Soc. 7 4 , 1 4 5 2 ( 1 9 5 2 ) . BLUMER, M . and KOLTHOFF, I . , Experientia 8 , 1 3 8 ( 1 9 5 2 ) . PECSOK, R . L . and MAVERICK, E . F . , Τ. Am. Chem. Soc. 7 6 , 3 5 8 ( 1 9 5 4 ) . PECSOK, R . L . and JUVET, R . , / . Am. Chem. Soc. 7 5 , 1 2 0 2 ( 1 9 5 3 ) . 5 9 . MiCKA, K . and TOCKSTEIN, Α .

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Analytical Applications of EDTA and Related Compounds by R. Přibil, R. Belcher, H. Freiser

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