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3. I. The Rate of Recombination of Iodine Atoms. II. Some Studies of the Trace Quantities of Lead, Uranium, and Thorium in Marine Carbonate Skeletons

Author

Marshall, Royal Richard, Marshall, Royal Richard, Marshall, Royal Richard, and Marshall, Royal Richard

Abstract

PART I. The rate constants for the homogeneous recombination of iodine atoms in the gas phase I+I+M → d[I₂]/d[I₂][M], have been measured for the gases M=A, n̲e̲o̲-C₅H₁₂ and n̲-C₅H₁₂ at room temperature. The rate constants are 4.2 (±0.4) x 10⁹, 58 (±4) x 10⁹, and 65 (±6) x 10⁹ liter²mole⁻²sec⁻¹, respectively. In these experiments and those with iodine solutions, a short, intense pulse of light from a flash lamp dissociated 1-10% of the iodine molecules in a reaction cell. The photoelectric cell response to a light signal modulated with the change in the iodine atom concentration was amplified and used as the vertical deflection input of an oscilloscope. The oscilloscope trace, a direct indication of the subsequent recombination observed during periods from 0.0002 sec after the flash to as long as 0.01 sec, was recorded photographically. The rate constants for the recombination of iodine atoms in the liquids CCl₄ and n̲-C₇H₁₆, d[I₂]/d[I₂], were found to be at room temperature 0.7 (±0.11) x 10¹⁰ and 2.2 (±0.4) x 10¹⁰ liter mole⁻¹sec⁻¹, respectively. The primary quantum yields in the solutions were found to 0.19 (±0.05) and 0.41 (±0.26), respectively. PART II. A procedure is described for the chemical isolation from carbonates of microgram quantities of lead, uranium, and thorium suitable for mass spectrometric analyses. The concentration of lead in a Jurassic belemnite as well as a Mississippian Spirifer has been found to be less than 1 ppm while for Strombus gigas, a living species of gastropod, the value 0.19±0.04 ppm was found. The uranium concentration in this gastropod was determined as 0.036±0.002 ppm. The isotopic composition of the lead from the Strombus gigas has also been determined and is compared to other analyses of "common" lead.

Published
1955

6. I. The rate of recombination of iodine atoms. II. Some studies of the trace quantities of lead, uranium, and thorium in marine carbonate skeletons

Author

Marshall, Royal R.

Subjects
Chemistry
Abstract

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. PART I. The rate constants for the homogeneous recombination of iodine atoms in the gas phase, I + I + M [...] I[subscript 2] + M, d[I[subscript 2]] /dt = k [I][superscript 2] [M], have been measured for the gases M = A, [...]-C[subscript 5]H[subscript 12] and [...]-C[subscript 5]H[subscript 12] at room temperature. The rate constants are 4.2 ([...]0.4) x 10[superscript 9], and 65 ([...]6) x 10[superscript 9] liter[superscript 2]mole[superscript -2]sec[superscript -1], respectively. In these experiments and those with iodine solutions, a short, intense pulse of light from a flash lamp dissociated 1-10% of the iodine molecules in a reaction cell. The photoelectric cell response to a light signal modulated with the change in the iodine atom concentration was amplified and used as the vertical deflection input of an oscilloscope. The oscilloscope trace, a direct indication of the subsequent recombination observed during periods from 0.0002 sec after the flash to as long as 0.01 sec, was recorded photographically. The rate constants for the recombination of iodine atoms in the liquids CC1[subscript 4] and [...]-C[subscript 7]H[subscript 16], d[I[subscript 2]]/dt = k [I][superscript 2], were found to be at room temperature 0.7 ([plus or minus]0.11) x 10[superscript 10] and 2.2 ([plus or minus]0.4) x 10[superscript 10] liter mole[superscript -1], respectively. The primary quantum yields in the solutions were found to 0.19 ([plus or minus]0.05) and 0.41 ([plus or minus]0.26), respectively. PART II. A procedure is described for the chemical isolation from carbonates of microgram quantities of lead, uranium, and thorium suitable for mass spectrometric analyses. The concentration of lead in a Jurassic belemnite as well as a Mississippian Spirifer has been found to be less than 1 ppm while for Strombus gigas, a living species of gastropod, the value 0.19[plus or minus]0.04 ppm was found. The uranium concentration in this gastropod was determined as 0.036[plus or minus]0.002 ppm. The isotopic composition of the lead from the Strombus gigas has also been determined and is compared to other analyses of "common" lead.

Published
1955
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22. ALL CASH IS CREATED EQUAL.

Author

Marshall, Royal and Chambliss, Jamie Vacca

Subjects
ECONOMIC indicators, RACISM, WHITE people, BLACK people
Abstract

The article reports on the economic difference between blacks and whites. Blacks do not have the historical opportunity to build capital that whites have. Now that some of the barriers have been removed, blacks need to work at building capital. There's money in the black community, but unfortunately as a race, blacks have become more consumers than they have become investors, and that's killing them.

Published
2003

23. Duke Ellington, Vol. 2: The Cotton Club To Sweden (1938 - 1940) - CD 4.

Author

The Duke Ellington Orchestra, (1899), Duke Ellington, performer, (1906), Wallace Jones, performer, (1904), Tricky Sam Nanton, performer, (1907), Lawrence Brown, performer, (1907), Hayes Alvis, performer, Baker, Harold, performer, (1913), Charlie Barnet, performer, (1906), Barney Bigard, performer, (1918), Jimmy Blanton, performer, (1910), Harry Carney, performer, Garland, Joe, performer, Greer, Sonny, performer, Guy, Freddy, performer, Hardwick, Otto 'Toby', performer, (1906), Johnny Hodges, performer, Jenkins, Freddy, performer, (1912), Marshall Royal, performer, (1902), Charles Cornell, performer, (1907), Rex Stewart, performer, (1921), Billy Taylor, performer, and (1900), Juan Tizol, performer

Published
2007

24. Duke Ellington, Vol. 2: The Cotton Club To Sweden (1933 - 1938) - CD 3.

Author

The Duke Ellington Orchestra, (1899), Duke Ellington, performer, (1905), Arthur Whetsol, performer, (1906), Barney Bigard, performer, (1911), Cootie Williams, performer, Guy, Freddy, performer, Jenkins, Freddy, performer, (1910), Harry Carney, performer, (1904), Tricky Sam Nanton, performer, (1906), Johnny Hodges, performer, (1900), Juan Tizol, performer, Greer, Sonny, performer, (1891), Wellman Braud, performer, (1902), Charles Cornell, performer, (1903), Dick Robertson, performer, (1901), Rudy Jackson, performer, (1907), Hayes Alvis, performer, (1905), Ivie Anderson, performer, Avendorf, Fred, performer, Baker, Harold, performer, (1913), Charlie Barnet, performer, (1918), Jimmy Blanton, performer, (1907), Lawrence Brown, performer, Garland, Joe, performer, Hardwick, Otto 'Toby', performer, (1906), Wallace Jones, performer, (1912), Marshall Royal, performer, (1907), Rex Stewart, performer, (1921), Billy Taylor, performer, and (1909), Ben Webster, performer

Published
2007

25. Duke Ellington, Vol. 2: The Cotton Club To Sweden (1929 - 1940) - CD 1.

Author

Jungle Band, The Harlem Footwarmers, Duke Ellington & His Cotton Club Orchestra, The Duke Ellington Orchestra, (1899), Duke Ellington, performer, (1905), Arthur Whetsol, performer, (1906), Barney Bigard, performer, (1911), Cootie Williams, performer, Guy, Freddy, performer, Jenkins, Freddy, performer, (1910), Harry Carney, performer, (1904), Tricky Sam Nanton, performer, (1906), Johnny Hodges, performer, (1900), Juan Tizol, performer, Greer, Sonny, performer, (1891), Wellman Braud, performer, (1902), Charles Cornell, performer, (1903), Dick Robertson, performer, (1901), Rudy Jackson, performer, (1907), Hayes Alvis, performer, (1905), Ivie Anderson, performer, Avendorf, Fred, performer, Baker, Harold, performer, (1913), Charlie Barnet, performer, (1918), Jimmy Blanton, performer, (1907), Lawrence Brown, performer, Garland, Joe, performer, Hardwick, Otto 'Toby', performer, (1906), Wallace Jones, performer, (1912), Marshall Royal, performer, (1907), Rex Stewart, performer, (1921), Billy Taylor, performer, and (1909), Ben Webster, performer

Published
2007

26. Duke Ellington, Vol. 2: The Cotton Club To Sweden (1930 - 1932) - CD 2.

Author

The Duke Ellington Orchestra, Mills Brothers, (1899), Duke Ellington, performer, (1905), Arthur Whetsol, performer, (1906), Barney Bigard, performer, (1911), Cootie Williams, performer, Guy, Freddy, performer, Jenkins, Freddy, performer, (1910), Harry Carney, performer, (1904), Tricky Sam Nanton, performer, (1906), Johnny Hodges, performer, (1900), Juan Tizol, performer, Greer, Sonny, performer, (1891), Wellman Braud, performer, (1902), Charles Cornell, performer, (1903), Dick Robertson, performer, (1901), Rudy Jackson, performer, (1907), Hayes Alvis, performer, (1905), Ivie Anderson, performer, Avendorf, Fred, performer, Baker, Harold, performer, (1913), Charlie Barnet, performer, (1918), Jimmy Blanton, performer, (1907), Lawrence Brown, performer, Garland, Joe, performer, Hardwick, Otto 'Toby', performer, (1906), Wallace Jones, performer, (1912), Marshall Royal, performer, (1907), Rex Stewart, performer, (1921), Billy Taylor, performer, (1909), Ben Webster, performer, and (1896), Ethel Waters, performer

Published
2007

27. I Got Rhythm Volume 3 1935-1944.

Author

Art Tatum Trio, Art Tatum Trio, Bailey, Joe, performer, Bradley, Oscar Lee, performer, (1913), John Collins, performer, (1904), Eddie DeLange, performer, (1916), Tiny Grimes, performer, (1901), Edmond Hall, performer, (1908), Will Hudson, performer, (1921), Billy Taylor, performer, Thomas, Joe, performer, (1912), Marshall Royal, performer, (1914), Slam Stewart, performer, and (1909), Art Tatum, performer

Published
2006

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