Phosphorus and zinc measurements in Kjeldahl digests.
D055598:Chemical Phenomena; D002621:Chemistry; D003300:Copper; D005069:Evaluation Studies as Topic; D006358:Hot Temperature; D008722:Methods; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis*; D010944:Plants / Q000032:analysis*; D011188:Potassium; D012643:Selenium; D013053:Spectrophotometry; D013054:Spectrophotometry, Atomic; D013431:Sulfates; D013464:Sulfuric Acids; D014197:Trees / Q000032:analysis; D015032:Zinc / Q000032:analysis*
D013431:Sulfates; D013464:Sulfuric Acids; D010758:Phosphorus; D003300:Copper; D012643:Selenium; D015032:Zinc; D009584:Nitrogen; D011188:Potassium