AS 3502-1987

1 - AS 3502-1987 URINE-DEERMINATION OF TOTAL ARSENIC-FURNACE ATOMIC ABSORPTION SPECTROMETRIC METHOD
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 APPLICATION.
5 - 3 REFERENCED DOCUMENTS.
5 - 4 PRINCIPLE.
5 - 5 REAGENTS.
5 - 5.1 General requirements.
5 - 5.2 Solutions.
5 - 5.2.1 Nitric acid
5 - 5.2.2 Acetic acid
5 - 5.2.3 Perchloric acid
5 - 5.2.4 Sulphuric acid
5 - 5.2.5 Hydrochloric acid
5 - 5.2.6 Sulphuric acid solution
5 - 5.2.7 Sodium hydroxide solution
5 - 5.2.8 Nitric acid/perchloric acid/sulphuric acid mixture.
5 - 5.2.9 Cyclohexane.
5 - 5.2.10 Iodide solution.
5 - 5.2.11 Copper(II) nitrate solution
5 - 5.3 Standard solutions.
5 - 5.3.1 Stock standard arsenic solution
5 - 5.3.2 Working standard solution
5 - 6 APPARATUS.
5 - 6.1 Glassware.
5 - 6.2 Hotplate.
5 - 6.3 Micropipettes and microsample injectors.
5 - 6.4 Atomic absorption spectrometer.
5 - 6.5 Si gnal recording.
5 - 7 SAMPLE PRESERVATION.
6 - 8 INSTRUMENT PROCEDURE.
6 - 8.1 Analytical parameters.
6 - 8.1.1 Wavelength.
6 - 8.1.2 Furnace operating parameters.
6 - 9 CALIBRATION.
6 - 10 PROCEDURE.
6 - 10.1 Blank test.
6 - 10.2 Determination.
6 - 10.2.1 Acid digestion.
6 - 10.2.2 Extraction.
7 - 10.2.3 Atomic absorption measurement.
7 - 11 PRECISION.
7 - 12 TEST REPORT.

Sets out an atomic absorption spectrometric method for the determination of total arsenic in urine in the range 0.1 µmol/L to 5.0 µmol/L.

This Standard sets out a furnace atomic absorption spectrometric procedure for the determination of total arsenic in urine.