Colorimetric determination of chromium in titanium alloys

Norwitz, George; Codell, Maurice

doi:10.1016/s0003-2670(01)80814-x

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Titanium and Zirconium1

Determination Of Elements Found In Titanium and Titanium Alloys1

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1955

2015

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Cited by 8 publications

(3 citation statements)

References 18 publications

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“…Norwitz, and Codell found the diphenylcarbazide method superior to the titrimetric method for 0.02 to 4% chromium with respect to the time required and freedom from interference by the usual elements occurring in commercial titanium alloys (135).…”

Section: Titanium and Zirconiummentioning

confidence: 99%

Review - Nonferrous Metallurgy

Moss¹

1955

Anal. Chem.

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Section: Titanium and Zirconiummentioning

confidence: 99%

Review - Nonferrous Metallurgy

Moss¹

1955

Anal. Chem.

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“…The hot perchloric acid oxidation method seems to give fairly reliable results for chromium in titanium and titanium alloys, even though the titanium is precipitated during the fuming. Chromium in titanium and titanium alloys has been determined colorimetrically with diphenylcarbazide (48). Vanadium, molybdenum, and tungsten do not interfere with this colorimetric procedure.…”

Section: Determination Of Elements Found In Titanium and Titanium Alloysmentioning

confidence: 99%

Analytical Chemistry of Titanium Alloys

Codell¹,

Norwitz²,

Mikula³

1955

Anal. Chem.

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“…W(VI), Mo(VI), Fe(III), V(V), and Hg ions interfere with the determination. A procedure for the determination of chromium in titanium was proposed based on the application of DPC after the oxidation of chromium by potassium permanganate [5]. In the analysis of steels, chromium is oxidized with perchloric acid.…”

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confidence: 99%

Determination of titanium(IV) and chromium(VI) with 2,7-dichlorochromotropic acid and 1,5-diphenylcarbazide on the solid phase

et al. 2015

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Possibility of the selective determination of Ti(IV) and Cr(VI) by diffuse reflection spectroscopy after their simultaneous adsorption from one sample on a two layer substrate is studied. Titanium(IV) is adsorbed on a fiber filled with a cation exchanger (PANV KU 2) and determined with 2,7 dichlorochromo tropic acid; chromium(VI) is adsorbed on a fiber filled with an anion exchanger (PANV AV 17) and deter mined with 1,5 diphenylcarbazide. Conditions are selected for the simultaneous adsorption of titanium and chromium in the batch and dynamic modes. Conditions are optimized for the determination of titanium with 2,7 dichlorochromotropic acid on PANV KU 2. The selectivity of titanium and chromium determination in the presence of foreign ions is studied. Calibration graphs are linear in the ranges 5-40 and 2-20 ng/mL for Ti(IV) and Cr(VI), respectively; the detection limits are 4 and 2 ng/mL. The possibility of determining Ti(IV) and Cr(VI) in one sample at their ratios from 5 : 1 to 1 : 4 is shown.

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Colorimetric determination of chromium in titanium alloys

Cited by 8 publications

References 18 publications

Review - Nonferrous Metallurgy

Review - Nonferrous Metallurgy

Analytical Chemistry of Titanium Alloys

Determination of titanium(IV) and chromium(VI) with 2,7-dichlorochromotropic acid and 1,5-diphenylcarbazide on the solid phase

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