ASTM-D1426 Standard Test Methods for Ammonia Nitrogen In Water

ASTM-D1426 - 2015 EDITION - CURRENT
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Scope

1.1 These test methods cover the determination of ammonia nitrogen, exclusive of organic nitrogen, in water. Two test methods are included as follows:

 

Sections

 Test Method A—Direct Nesslerization

7 – 16

 Test Method B—Ion Selective Electrode

17 – 24

1.2 Test Method A is used for the routine determination of ammonia in steam condensates and demineralizer effluents.

1.3 Test Method B is applicable to the determination of ammonia nitrogen in the range from 0.5 to 1000 mg NH3N/L directly in reagent and effluent waters. Higher concentrations can be determined following dilution. The reported lower range is based on multiple-operator precision. Lower limits have been obtained by two of the twelve laboratories participating in the round robin.

1.4 Both test methods A and B are applicable to surface and industrial waters and wastewaters following distillation. The test method for distillation given in Appendix X1 has been used in the past to meet requirements for predistillation of samples being analyzed for ammonia.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.7 The distillation method now appears as Appendix X1 and is provided as nonmandatory information only. The automated colorimetric phenate method has been discontinued.

Keywords

ammonia; analysis; calorimetric; electrode; water;; ICS Number Code 13.060.50 (Examination of water for chemical substances)

To find similar documents by ASTM Volume:

11.01 (Water (I))

To find similar documents by classification:

13.060.50 (Examination of water for chemical substances)

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Document Number

ASTM-D1426-15

Revision Level

2015 EDITION

Status

Current

Modification Type

Revision

Publication Date

April 15, 2015

Document Type

Test Method

Page Count

9 pages

Committee Number

D19.05