ASTM D7781 - 14 - Standard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase

ASTM D7781 - 14

Standard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase

Status : Current   Published : January 2014



1.1 This test method is applicable to the determination of nitrate plus nitrite (as nitrogen) in drinking water, surface, saline, wastewater, and ground waters. The applicable range of this test method is from 0.05 to 5 mg/L of nitrogen. The range may be extended upward by dilution of an appropriate aliquot. The 40 CFR Part 136 Method Detection Limit (MDL) is 0.02 mg /L.

1.2 It is the user's responsibility to ensure the validity of this test method for waters of untested matrices. The quality control criteria in Section 17 for method blanks, laboratory control samples, matrix spikes and matrix duplicates must be met.

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

1.4  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.

Standard NumberASTM D7781 - 14
TitleStandard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase
Publication Date04 January 2014
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors nitrate, nitrite, nitrate plus nitrite, discrete analyzer, nitrate reductase, enzyme, cadmium reduction
File Size0 KB

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