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  1. G. v. Hevesy and K. Würstlin, Zeits. f. anorg. Chemie 216, 305–11, 1934.
    [Crossref]
  2. V. M. Goldschmidt, Skr. Norske Vid.-Akad. Oslo, Mat.-Naturv. Kl., No.  4, 100 (1937).
  3. O. Baudisch, Arkiv. f. Kemi, Min. Geol. 12B, No. 8,1935.
  4. G. Frederick Smith, “Cupferron and Neo-Cupferron,” Columbus, 1938.
  5. G. E. F. Lundell and J. I. Hoffman, Outlines of Methods of Chemical Analysis (New York, 1938), p. 117.
  6. L. W. Strock, Proceedings of the Seventh Annual Summer Conference on Spectroscopy (Wiley and Sons, 1939), pp. 134–41.
  7. L. W. Strock, Spectrochim. Acta 1, 117–22, 1939.
    [Crossref]

1939 (1)

L. W. Strock, Spectrochim. Acta 1, 117–22, 1939.
[Crossref]

1938 (1)

G. Frederick Smith, “Cupferron and Neo-Cupferron,” Columbus, 1938.

1937 (1)

V. M. Goldschmidt, Skr. Norske Vid.-Akad. Oslo, Mat.-Naturv. Kl., No.  4, 100 (1937).

1935 (1)

O. Baudisch, Arkiv. f. Kemi, Min. Geol. 12B, No. 8,1935.

1934 (1)

G. v. Hevesy and K. Würstlin, Zeits. f. anorg. Chemie 216, 305–11, 1934.
[Crossref]

Baudisch, O.

O. Baudisch, Arkiv. f. Kemi, Min. Geol. 12B, No. 8,1935.

Frederick Smith, G.

G. Frederick Smith, “Cupferron and Neo-Cupferron,” Columbus, 1938.

Goldschmidt, V. M.

V. M. Goldschmidt, Skr. Norske Vid.-Akad. Oslo, Mat.-Naturv. Kl., No.  4, 100 (1937).

Hevesy, G. v.

G. v. Hevesy and K. Würstlin, Zeits. f. anorg. Chemie 216, 305–11, 1934.
[Crossref]

Hoffman, J. I.

G. E. F. Lundell and J. I. Hoffman, Outlines of Methods of Chemical Analysis (New York, 1938), p. 117.

Lundell, G. E. F.

G. E. F. Lundell and J. I. Hoffman, Outlines of Methods of Chemical Analysis (New York, 1938), p. 117.

Strock, L. W.

L. W. Strock, Spectrochim. Acta 1, 117–22, 1939.
[Crossref]

L. W. Strock, Proceedings of the Seventh Annual Summer Conference on Spectroscopy (Wiley and Sons, 1939), pp. 134–41.

Würstlin, K.

G. v. Hevesy and K. Würstlin, Zeits. f. anorg. Chemie 216, 305–11, 1934.
[Crossref]

Arkiv. f. Kemi, Min. Geol. (1)

O. Baudisch, Arkiv. f. Kemi, Min. Geol. 12B, No. 8,1935.

Columbus (1)

G. Frederick Smith, “Cupferron and Neo-Cupferron,” Columbus, 1938.

Skr. Norske Vid.-Akad. Oslo, Mat.-Naturv. Kl. (1)

V. M. Goldschmidt, Skr. Norske Vid.-Akad. Oslo, Mat.-Naturv. Kl., No.  4, 100 (1937).

Spectrochim. Acta (1)

L. W. Strock, Spectrochim. Acta 1, 117–22, 1939.
[Crossref]

Zeits. f. anorg. Chemie (1)

G. v. Hevesy and K. Würstlin, Zeits. f. anorg. Chemie 216, 305–11, 1934.
[Crossref]

Other (2)

G. E. F. Lundell and J. I. Hoffman, Outlines of Methods of Chemical Analysis (New York, 1938), p. 117.

L. W. Strock, Proceedings of the Seventh Annual Summer Conference on Spectroscopy (Wiley and Sons, 1939), pp. 134–41.

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Figures (7)

Fig. 1
Fig. 1

Individual intensity ratios (expressed as log relative intermittent exposure times=Δ log T) of Fe/Zr for Cupferron precipitated mixtures of Fe plus Ti, V and Zr as minor constituents in proportions 1 : 1 : 1. Dashed line is average curve for dry oxide mechanical mixtures.

Fig. 2
Fig. 2

Individual log relative intermittent exposure times for Fe/Zr in precipitated Fe–Zr mixtures in absence of Ti and V. Numbered fields enclose data obtained from same plate. Solid and open circles distinguish different precipitates at same concentration. See text concerning preheating data projected to right of figure.

Fig. 3
Fig. 3

Average curves obtained from mechanical oxide mixtures superimposed on precipitated mixture data of Fig. 2.

Fig. 4
Fig. 4

Calibration curve for mechanical oxide mixtures of SnO2 in Fe2O3. ZrO2 is also present in each mixture in constant 10 : 1 ratio to SnO2.

Fig. 5
Fig. 5

Calibration curve for determining Co : Fe ratio in ignited iron sulfide precipitated from solution containing 25 mg Fe, 2 mg Zr plus CaCl2 and NaCl equivalent to acidified Saratoga mineral water concentrated to 1/15th volume.

Fig. 6
Fig. 6

Calibration curve for Ni in Fe2O3 precipitated from solution as described in Fig. 5.

Fig. 7
Fig. 7

Calibration curve for Mn in Fe2O3 precipitated from solution as described in Fig. 5.

Tables (3)

Tables Icon

Table I Effect of short circuit heating in arc of Fe–Zr precipitated mixture+carbon. Density lines in step 6. Plate 86. Zr 3273.04A. Fe 3280.26A.

Tables Icon

Table II Effect of preheating precipitated mixtures in arc on tin lines. 0.14 percent SnO2 in Fe2O3. Plate 86. Sn 2839.99A. Fe 2840.42A.

Tables Icon

Table III Effect of preheating precipitated mixtures in arc (possible reactions).