Accession Number:

ADA439130

Title:

Detection Levels of Drinking Water Contaminants Using Field Portable Ultraviolet and Visible Light (UV/Vis) Spectrophotometry

Descriptive Note:

Master's thesis

Corporate Author:

UNIFORMED SERVICES UNIV OF THE HEALTH SCIENCES BETHESDA MD

Personal Author(s):

Report Date:

2005-06-15

Pagination or Media Count:

71.0

Abstract:

The current EPA approved methods for the analysis of drinking water contaminants are expensive, require skilled lab technicians, and are not conducive to military field operations. The HACH DR4000-U offers an easier, more portable, water detection system using a UltravioletVisible Spectrophotometer. The DR4000U was tested against 19 EPA inorganic drinking water contaminants at six concentrations. For all 19 contaminants, the DR4000U was able to detect well below the EPA Maximum Contaminant Levels. The DR4000U was reasonably accurate and precise. The highest four concentrations were within 25 of the known standards for all 19 contaminants. 97 of the replicate samples analyzed at the highest four concentrations had less then 25 RSD. The system is reasonably compact and rugged but the delicate glassware, many reagents and cleanliness indicate this system is well suited to a climate controlled operating location but is not well suited to field use.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Test Facilities, Equipment and Methods
  • Optics
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE