What are the interferences for the Nitrogen, Ammonia-Nessler Method 8038?

Document ID

Document ID TE135

Version

Version 9.0

Status

Status Published

Published Date

Published Date 04/24/2018
Question
What are the interferences for the Nitrogen, Ammonia-Nessler Method 8038?
Summary
Interferences common to the nitrogen ammonia Nessler method
Answer
Details on known interfering substances can be found in the "Interferences" section in the  Nitrogen Ammonia Nessler Method 8038  from the Water Analysis Handbook (WAH). Listed below are the most common interferences:

Chlorine         
Hardness
Iron                
Seawater
Sulfide
Glycine
Various aliphatic and aromatic amines
Organic chloramines
Acetone, aldehydes, and alcohols

Most of these interferences can be eliminated or reduced through sample pretreatment. The presence of sulfide or iron, at any concentration, will cause turbidity to form in the sample after addition of the Nessler reagent.

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