The authors developed a reliable spectrophotometric method for determining and measuring trace amounts of lead in various samples. Lead has long been recognized as a hazardous metal to fish and other ...

William W. Wilfinger, Karol Mackey, and Piotr Chomczynski, Effect of pH and Ionic Strength on the Spectrophotometric Assessment of Nucleic Acid Purity: BioTechniques 22:474-481 (March 1997).

The role played by spectrophotometric methods in research on vitamins and hormones has been spectacular 1: the application of these methods to analytical procedures promises to be equally impressive.