NOTES
Determination of Nitrogen, Sulfur, Phosphorus, and Carbon in Solid Biological Materials via Hydrogenation and Element-SelectiveDetection Arthur D. Horton,' Wilbur D. Shults, Albert S. Meyer, and Donald R. Matthews Oak Ridge National Laboratory,
Oak
R i d g e , T e n n 37830
A rapid method for the simultaneous determination of nitrogen ( N ) , sulfur (S), and carbon (C), and for the separate determination of phosphorus (P), in solid biological field specimens has been developed. No pretreatment of the samples other than freeze- or oven-drying and grinding to
