Sets out a flame atomic spectrometric method for the determination of magnesium in natural and waste waters in the range 0.02 to 2 mg/L. A procedure for non-filtrable magnesium is set out in an appendix.
Table of contents
Header
About this publication
PREFACE
1 SCOPE
2 APPLICATION
3 REFERENCED DOCUMENTS
4 PRINCIPLE
5 REAGENTS
5.1 General
5.2 Solutions
5.2.1 Nitric acid (ϱ20 1.42 g/mL)
5.2.2 Hydrochloric acid (1 + 1)
5.2.3 Releasing agent
5.3 Standard solutions
5.3.1 Stock magnesium solution (1.000 g/L)
5.3.2 Standard magnesium solution (10.0 mg/L)
6 APPARATUS
6.1 Glassware
6.2 Flame atomic absorption spectrometer
6.2.1 Magnesium hollow-cathode lamp
6.2.2 Support gas-air
6.2.3 Fuel gas-acetylene
7 SAMPLES AND SAMPLING
8 PROCEDURE
8.1 Optimization
8.2 Calibration
8.2.1 General
8.2.2 Direct aspiration—standards
8.3 Determination
8.3.1 Preservative blank
8.3.2 Direct aspiration
9 CALCULATIONS
10 PRECISION
11 REPORT
APPENDIX A
A1 SCOPE
A2 APPLICATION
A3 PRINCIPLE
A4 PROCEDURE
A5 CALCULATION
Cited references in this standard
Content history
DR 86089
AS 2976-1987 REC:2017
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