Fatty acids, C9-13-neo-, potassium salts

Monitoring data

Administrative data

Endpoint:

monitoring data

Type of information:

other:

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Data source

Reference

Reference Type:

other: Book (chapter)

Title:

The Oceans Their Physics, Chemistry, and General Biology; Chapter: Chemistry of Seawater

Author:

Sverdrup, H. U.
Johnson, M. W.
Fleming, R. H.

Year:

1942

Bibliographic source:

Prentice-Hall, Inc., New York

Results and discussion

Any other information on results incl. tables

DITTMAR'S VALUES FOR THE MAJOR CONSTITUENTS OF SEA WATER (Values in grams per kilogram, ‰)
Ion	Original values		Recalculated, 1940 atomic weights		1940 values
	Cl = 19 ‰	%	Cl = 19 ‰	%	Cl = 19 ‰	%
C1^−	18.971	55.29	18.971	55.26	18.980	55.04
Br^−	0.065	0.19	0.065	0.19	0.065	0.19
SO4−	2.639	7.69	2.635	7.68	2.649	7.68
CO3^−	0.071	0.21	0.071	0.21	……	……
HCO3^−	……	……	……	……	0.140	0.41
F^−	……	……	……	……	0.001	0.00
H3BO3	……	……	……	……	0.026	0.07
Mg^++	1.278	3.72	1.292	3.76	1.272	3.69
Ca^++	0.411	1.20	0.411	1.20	0.400	1.16
Sr^++					0.013	0.04
K^+	0.379	1.10	0.385	1.12	0.380	1.10
Na^+	10.497	30.59	10.498	30.58	10.556	30.61
Total	34.311		34.328		34.482

Applicant's summary and conclusion

Conclusions:

The authors Sverdrup et al. (1942) in chapter VI "Chemistry of Sea Water" referred to Dittmar (1884), who determined potassium in 77 water samples, representative of all oceans, which had been collected on the voyage around the world of H.M.S. Challenger. The results of Dittmar's work showed that there were no significant regional differences in the relative composition of sea water; consequently, his average values could be used to represent the ratios between the major dissolved constituents. Table 33 in Sverdrup et al. 1942 (here: "any other information on results incl. tables") gives mean values in g/kg seawater with a chlorinity of 19.00 ‰. For potassium, these natural sea water concentrations were determined to be ~ 380 mg K/kg 19.00 ‰ sea water.