Abstract

The role of hydrogen, carbon, nitrogen, oxygen, phosphorus, potassium, calcium, and magnesium as major nutrients, with iron as a secondary element of importance to plant life, has long been recognized. Recent studies have shown that the micro-nutrients, manganese, copper, boron, zinc, and in specific instances molybdenum, vanadium, and aluminum, play a vital part in increased crop yields. Very low trace amounts of cobalt, along with zinc, copper and manganese, have been shown to be essential to animals.

Spectrochemical Analysis of Ceramics and Other Non-Metallic Materials*

Edwin K. Jaycox
J. Opt. Soc. Am. 37(3) 162-165 (1947)

Spectrochemical Determination of Trace Metals in Biological Material*

Jacob Cholak and Robert V. Story
J. Opt. Soc. Am. 31(12) 730-738 (1941)

The Spectrochemical Analysis of Nickel Alloys*

Edwin K. Jaycox
J. Opt. Soc. Am. 37(3) 159-162 (1947)

The Use of Briquetted Samples in the Spectrochemical Analysis of Carbon and Alloy Steels and Other Metals

J. F. Woodruff
J. Opt. Soc. Am. 40(4) 192-196 (1950)

Some Horticultural Applications of Spectrochemical Analysis*

B. C. Brunstetter and A. T. Myers
J. Opt. Soc. Am. 31(2) 163-166 (1941)