The use of complexones in chemical analysis IX. The colorimetric determination of copper by sodium diethyldithiocarbamate

Šedivec, V.; Vašák, V.

doi:10.1135/cccc19500260

Cited by 36 publications

(11 citation statements)

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“…(ethylenedinitrilo) tetraacetic acid (EDTA) (4,23), 2,9-dimethyl-l,10-phenanthroline (24,25), and biscyclohexanoneoxaldihydrazone (14, 26) are well known. These sensitive reagents are applicable only where quantities of the order of parts per million of copper are to be determined.…”

Section: L O ) Diethyldithiocarbamate Andmentioning

confidence: 99%

EDTA as Masking Agent in Selective Spectrophotometric Determination of Copper with Triethylenetetramine. An Interpretation of Masking.

Cheng¹

1962

Anal. Chem.

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RCA laboratories, Princeton, N. J.b The blue colored copper triethenetetramine complex formed at pH 10 in the presence of EDTA and tartrate offers a highly selective method for determining copper in the milligram range. Variables for the color development have been studied. Many anions do not interfere; however the halides enhance the absorbance of the copper trietbenetetramine complex in the order F-< CI-< Br-< I-. pH plays an important role in masking; from the point of view of competing equilibria, the masking action of EDTA is theoretically interpreted. Further possibilities of using masking agents and other polyamines for the spectrophotometric determination of nickel and cobalt are indicated. URING THE LAST DECADE, several

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Section: L O ) Diethyldithiocarbamate Andmentioning

confidence: 99%

EDTA as Masking Agent in Selective Spectrophotometric Determination of Copper with Triethylenetetramine. An Interpretation of Masking.

Cheng¹

1962

Anal. Chem.

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“…Diethyldithiocarbamato complexes of given metal and Nadedtc were separated by extraction using the following procedure: An ampoule, containing 2cm^ of dioxane or DMF Solution of complex and Nadedtc [S-35] after definite time of exchange was broken in the Separation funnel, Solution diluted with 18 cm^ distilled water initially alkalized to pH ~ 9 with added 0.05 mole of NaCl (as salting-out agent [11 ]). Next 10 cm^ of CHCI3 were added and the mixture was shaken for 3 minutes.…”

Section: Separation Proceduresmentioning

confidence: 99%

Ligand Radioisotopic Exchange Reaction of Diethyldithiocarbamato Complexes of Fe (III), Co(lll) and Ni(ll) in Dioxane and Dimethylformamide

Kostański

Magas

1980

Radiochimica Acta

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Using radiotracer technique and extraction Separation of reactants, the kinetics of the ligand isotopic exchange reaction of diethyldithiocarbamato complexes of Fe(III), Co(III) and Ni(II) in dioxane and dimethylformamide has been studied. MCKAY's plots are linear, and no zero time exchange has been observed. The exchange reaction is very slow for the cobalt complex, whereas for the iron and nickel complexes the reaction is very fast. The ligand exchange reaction for the cobalt complex seems to be of the first order with respect to the complex, and of zero order with respect to the ligand, which suggests the S^i mechanism. Activation energy and activat'ion entropy for this reaction in dimethylformamide are 88.4±8.9 kJ/mol and 48.8±25.2 J/mol-K respectively.

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“…COPPER AND ZINC Sedivec and Vasák (117) studied the use of ethylenediaminetetraacetic acid in eliminating the interference encountered in the determination of copper with diethy-ldithiocarbamate. Interference of iron, cobalt, nickel, and manganese is completely eliminated.…”

Section: Iron Aluminum and Berylliummentioning

confidence: 99%

Water Analysis

Love¹,

Thatcher²

1952

Anal. Chem.

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The use of complexones in chemical analysis IX. The colorimetric determination of copper by sodium diethyldithiocarbamate

Cited by 36 publications

References 0 publications

EDTA as Masking Agent in Selective Spectrophotometric Determination of Copper with Triethylenetetramine. An Interpretation of Masking.

EDTA as Masking Agent in Selective Spectrophotometric Determination of Copper with Triethylenetetramine. An Interpretation of Masking.

Ligand Radioisotopic Exchange Reaction of Diethyldithiocarbamato Complexes of Fe (III), Co(lll) and Ni(ll) in Dioxane and Dimethylformamide

Water Analysis

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