Spectrophotometric determination of copper and iron subsequent to the simultaneous extraction of bis(2,9-dimethyl-1,10-phenanthroline)copper(I) and bis[2,4,6-tri(2-pyridyl)-1,3,5-triazine]iron(II) into propylene carbonate.

Details

• Personal Author:
  Felkel HL Jr. ; Spinelli WM ; Stephens BG
• Description:
  As a result of studies to find simple and reliable analytical methods for the determination of copper (7440508) and iron (7439896) it has been found that propylene carbonate (4-methyl-1,3-dioxolane-2- one) (108327) simultaneously extracts the 2,9-dimethyl-1,10- phenanthroline (neocuproine; NC) chelate of copper(I) and the tri(2- pyridyl)-1,3,5-triazine (TPTZ) chelate of iron(II) from acetate- buffered aqueous solutions. Molecular absorption spectrophotometric quantification is accomplished by measuring the absorbance of the iron(II)-TPTZ chelate at 596 nm and that of the copper(I)-NC chelate at 458 nm. The copper(I)-NC chelate does not absorb at 596 nm and consequently copper does not interfere with the determination of iron. The iron(II)-TPTZ chelate exhibits an absorbance at 458 nm that is 0.123 times its absorbance at 596 nm; therefore, correction for the effect of iron on the determination of copper is straightforward. The development of the method and the results of analyses of sea water, tap water, and aluminum alloy are reported. [Description provided by NIOSH]
• Subjects:
  Metals Occupational Health Safety Spectrophotometry
• Keywords:
  Extractants Grants-other Methodology NIOSH-Grant NIOSH-Publication Triazines
• ISSN:
  0003-2700
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 4 ; South Carolina
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  46
• Issue:
  6
• NIOSHTIC Number:
  nn:00045128
• Citation:
  Anal Chem 1974 May; 46(6):692-696
• Contact Point Address:
  Chemistry Department of Chemistry Wofford College Spartanburg, S C 29301
• CAS Registry Number:
  Copper (CAS RN 7440-50-8) ; Iron (CAS RN 7439-89-6) ; Propylene carbonate (CAS RN 108-32-7)
• Federal Fiscal Year:
  1974
• NORA Priority Area:
  Other Occupational Concerns ; Grants Other
• Performing Organization:
  Wofford College, Spartanburg, South Carolina
• Peer Reviewed:
  True
• Start Date:
  19710301
• Source Full Name:
  Analytical Chemistry
• End Date:
  19730831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d53f0032dd2fd08ee8d66ecb61e554a665e6011cb72a8f293b916f3ef5ec977eae5d043c8ced954b6a860f7940f215adc36b49d20ee83df72bdafc5abb4a89c6
• Download URL:
  https://stacks.cdc.gov/view/cdc/184021/cdc_184021_DS1.pdf
• File Type:
  [PDF - 637.28 KB ]