Die colorimetrische Aluminiumbestimmung mittels Eriochromeyanin-R

Millner, T.

doi:10.1007/bf01358515

Cited by 26 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the aluminum calibration curve it may be seen that this reading is equal to 1.11 gmoles, the expected value; referring the same reading to the dye calibration curve it may be seen to represent 3.30 gmoles of Eriochrome Cyanine R. This is in rather good agreement with the theoretical value of 3.33 gmoles for A1(ER)3 and substantiates the combining ratio for this complex suggested by Millner (13). ER is used to designate one mole of dye.…”

Section: Discussionsupporting

confidence: 85%

Direct Photometric Determination of Aluminum in Iron Ores

Hill¹

1956

Anal. Chem.

View full text Add to dashboard Cite

Gravimetric determinations of aluminum in iron ores are inaccurate, slow-, and tedious. .Z specific spectrophotometric method is described which is fast, direct, and accurate. A sodium carbonate fusion of the sample is dissolved in hydrochloric acid, diluted to volume, and an aliquot is taken for a blank and sample. Sodium mercaptoacetate is added to the sample to form a colorless complex with the iron and sodium Yersenate is added to the blank. Ammonium acetate buffer and stabilized Eriochrome C3anine R dye are added to 130th solutions. The red Eriochrome Cyanine R-aluminum complex which forms in the sample is measured against the hlanlc at 533 mp. Beryllium, background color of the dye, and other interfering elements are compcnsated for in the blank. When measured in a narrowband instrument, the complex obeys Beer's law up to 10% aluminum or higher.RAPID and specific method is needed for the determination

show abstract

Section: Discussionsupporting

confidence: 85%

Direct Photometric Determination of Aluminum in Iron Ores

Hill¹

1956

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…PHYSICAL PROPERTIES (7) Densities are usually expressed as pounds per cubic foot and may be determined by four general methods-aerated, freely settled, compacted, and pressure.…”

Section: Methodsmentioning

confidence: 99%

“…(6) Mitchell, H. L" and Ford, O. W" Ibid., 15, 56 (1943). (7) Pierrat, M., Compt. rend., 172, 1041-3 (1921).…”

Section: Literature Citedmentioning

confidence: 99%

See 1 more Smart Citation

Titration of Fluoride Ion with Aluminum Chloride

Saylor¹,

Larkin²

1948

Anal. Chem.

View full text Add to dashboard Cite

“…This color reaction is likewise the basis for colorimetric methods for the determination of aluminum {6, 9, 11). According to Millner (5), the colored product contains three equivalents of the dye radical per atom of aluminum. [In the literature cited here and likewise the work of Sandell (7) the water-soluble aluminum-Erichromecyanine compound is designated as a color lake.…”

Section: Eegriwementioning

confidence: 99%

Tests for Aluminum and Hydroxytriphenylmethane Dyes

Feigl¹,

Goldstein²

1957

Anal. Chem.

View full text Add to dashboard Cite

The chelate compounds produced in neutral or basic media b y the action of aluminum ions with hydroxytriphenylmethane dyes are decomposed but slowly b y hydrochloric or sulfuric acid (up to 1 to 1) and excess dye or dye acid can be removed by extraction with ether. Tests for aluminum ions can b e based on these findings. As little as 0.1 y of aluminum can b e detected if Chrome-fast pure blue B is used as the reagent.The color reaction can b e employed for the specific detection of alumina and also for traces of aluminum in water and silicates. The acid resistance of their aluminum compounds makes possible a spot test for hydroxytriphenylmethane dyes; the limits of detection are from 0.1 to 5 y. EGRIWE ( 1 ) described a very sen-

show abstract

Die colorimetrische Aluminiumbestimmung mittels Eriochromeyanin-R

Cited by 26 publications

References 0 publications

Direct Photometric Determination of Aluminum in Iron Ores

Direct Photometric Determination of Aluminum in Iron Ores

Titration of Fluoride Ion with Aluminum Chloride

Tests for Aluminum and Hydroxytriphenylmethane Dyes

Contact Info

Product

Resources

About