He was recognized by the American Chemical Society in 1955 for his isotope studies.
The latter point agrees with a recent isotope study.
In a stable isotope study of H. mossambicus, the grass component was found to constitute upwards of 94% of their food intake.
Hertz studied the application of radioactive phosphorus and the influences of hormones on cancer as displayed by isotope studies.
Stable and radioactive isotope studies provide insight into the geochemical evolution of rock units.
Other scientists perform stable isotope studies on the rocks to gain information about past climate.
Principal investigator for isotope studies is Dr. I.R. Kaplan, University of California at Los Angeles.
The reach of the new isotope studies is becoming so broad that even the dead are not immune from these investigations.
Stable isotope studies confirm the role of diagenesis in reservoir quality development.
Curiously, two bowmouth guitarfishes examined in a 2011 stable isotope study were found to have fed on pelagic rather than demersal animals, in contrast to previous observations.