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Nitrite – Drinking water

Laboratory Fee Schedule
Group: Inorganic
Procedure #:  EZZ0049A
 

Synonym(s):  Nitrite as nitrogen in potable water
Requisition Form G-22
Test Description The determination of nitrite, singly, in drinking water samples. 
Pre-Approval Needed N/A
Supplemental Information Required N/A
Supplemental Form(s) N/A
Performed on Specimens from (sources) Environmental
Sample/Specimen Type for Testing Drinking water.
Minimum Volume/Size Required 100 mL.
Storage/Preservation Prior to Shipping
  • Store in hard or soft plastic or glass container.
  • Measure and record the chlorine residual.
  • Maintain sample at 4.0°C.
  • Some headspace is allowed.
Transport Medium N/A
Specimen Labeling Sample identification must match submission form.
Shipping and Specimen Handling Requirements
  • Samples submitted for nitrite analysis must be tested by laboratory within 48 hours of collection.  
  • Ship according to Dangerous Goods Regulations, IATA, and/or CFR 49.
Method Automated colorimetry (EPA method 353.2) 
Turn-around Time N/A
Interferences/Limitations Some known interferences are as follows: 
  • Residual chlorine. 
  • High concentrations of iron, copper, or other metals. 
  • High concentrations of oil or grease; and 
  • Excessive turbidity. 
Common Causes for Rejection
  • Insufficient quantity
  • Unacceptable specimen type or source
  • Improper shipping conditions
  • Expired media or collection container
  • Discrepancies between specimen label and submission form
  • Incomplete or missing submission form
Additional Information N/A