The Mercury Cathode and its Applications.

Maxwell, J.A.; Graham, R. P.

doi:10.1021/cr60145a002

Cited by 34 publications

(11 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After the solution was centrifuged and the precipitate washed with 20% NaOH, the superhate and washes were neutralized with concentrated HC1 to a pH of 8.0 to 8.6 and centrifuged. The amphoteric hydroxide precipitate was then washed with a buffered wash and dissolved in concen-2See Maxwell and Graham [1950], and Page, Maxwell, and Graham [1962] for reviews of the method. trated HC1.…”

Section: Chemical Proceduresmentioning

confidence: 99%

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method

Lipschutz¹,

Signer²,

Anders³

1965

J. Geophys. Res.

View full text Add to dashboard Cite

The Al26 and Ti44 contents of 10 iron meteorites were determined by γ‐γ coincidence counting of separated fractions. The Al26 contents, ranging from 0 to 2.70 dpm/kg, were lower by factors of 1.5 to 3 than literature values obtained by β‐counting. This discrepancy is apparently caused by a β‐emitting impurity that interferes in β‐counting but not in the γ‐γ coincidence method. The concentrations of He3, He4, Ne21, Ar36, and Ar38 were determined mass spectrometrically. From the Ne21 and Al26 content of these meteorites, the following cosmic ray exposure ages, in millions of years, were calculated (relative to Norfolk = 600 m.y.): Arispe = 120, Aroos = 1000, Duchesne = 200, Grant = 590, Odessa, 360, Sandia Mountains ≤ 210, Santa Apolonia = 840, Sikhote‐Alin = 320, Treysa = 530. In most cases, these values agree rather well with previously determined K41/K40 and Ar36Cl36 ages. The agreement with the K41/K40 ages, in particular, casts doubt on the notion that the exposure ages of iron meteorites are strongly affected by space erosion. Sandia Mountains and Arispe were found to contain noble gases in anomalous proportions. Apparently both these meteorites contain small amounts of radiogenic or primordial He4. Arispe, moreover, seems to have suffered a secondary breakup some 100 m.y. ago. Except for the observed falls, Aroos, Sikhote‐Alin, and Treysa, none of the above meteorites contained any detectable Ti44 activity. Evidently, the terrestrial ages of these meteorites are long in comparison with the half‐life of Ti44, 48 years. The absence of Ti44 activity in Norfolk shows that it cannot have been associated with a 1907 fireball, as had been previously supposed. Sandia Mountains appears to have a low Al26 activity, possibly due to a terrestrial age of the order of 106 years.

show abstract

Section: Chemical Proceduresmentioning

confidence: 99%

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method

Lipschutz¹,

Signer²,

Anders³

1965

J. Geophys. Res.

View full text Add to dashboard Cite

show abstract

“…It is well established that iron can be separated from aluminum by electrolysis in a mercury cathode cell [ 8 , 9 ]. Wiberley and Bassett [ 16 ] suggests a one-normal mixture of perchloric-sulfuric acids as the electrolyte.…”

Section: Discussionmentioning

confidence: 99%

Separation and determination of small quantities of aluminum in steel

Bendigo¹,

Bell²

1960

J. RES. NATL. BUR. STAN. SECT. A.

View full text Add to dashboard Cite

A m ethod is described for d etermi nin g s mall a mounts of a luminum (0.01 to 0.3 percent) in tainless a nd carbon s teels. A p erchlorie-sulfmic acid solution of th e steel is electrolyzed ill a m ercury catll ode cell to remov e most of the iroll , and an extraction with chloro form is m ade to remove elements such as alumi num, residu al iron , a nd titan iu m a s cupferrates from a solut. ion buffered at pH 3.5. These elements are conv erted from cupferrate to perchlorates; a ll excep t aluminum are t hen extracted as cupferrates with chloroform from 4 N hydrochlori c acid . Aluminum in t he acid solution is d eter.min ecl photo met ricall y wi t h a luminon (ammonium a urintricarboxylate) at a wave leng t h of approximately 540 millimicrons. An acc uracy of ± 0.005 percent a luminum is indi catecl .

show abstract

“…The mercury electrode was shown to have unique properties as a cathode on which to deposit metals (14). Mercury is one of the more noble and less reactive metals; it forms amalgams with man}-other metals and possesses a very high overvoltage for hydrogen.…”

Section: Mercury Cathodementioning

confidence: 99%

Electrolytic Separations. Separation by Electroanalysis

Ashley¹

1950

Anal. Chem.

View full text Add to dashboard Cite

The Mercury Cathode and its Applications.

Cited by 34 publications

References 92 publications

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method

Separation and determination of small quantities of aluminum in steel

Electrolytic Separations. Separation by Electroanalysis

Contact Info

Product

Resources

About

The Mercury Cathode and its Applications.

Cited by 34 publications

References 92 publications

Cosmic ray exposure ages of iron meteorites by the Ne21/Al26method

Cosmic ray exposure ages of iron meteorites by the Ne21/Al26method

Separation and determination of small quantities of aluminum in steel

Electrolytic Separations. Separation by Electroanalysis

Contact Info

Product

Resources

About

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method

Cosmic ray exposure ages of iron meteorites by the Ne²¹/Al²⁶method