Data Views Exclude Ubiquitous Chemicals Activities: 653 Chemicals w/Activities: 96 All Chemicals: 141 CSV Excel PDF Previous12345678 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Flower Gum Leaf Plant Seed Sprout Seedling Low PPM High PPM StdDev *Reference 77 77 ZINC Seed 26.0 37.0 -0.23 * *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.