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Determination of inorganic anions in aqueous matrices according to EPA 6500 and ASTM D6508-10 test methods

INTRODUCTION

This test method is applicable for determination of the dissolved inorganic anions; fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in aqueous matrices using capillary ion electrophoresis with indirect UV detection. The method can be applied to drinking water, waste water and ground water.

MEASURING METHOD

The capillary electrophoresis method for determination of inorganic anions’ concentrations is based on differential migration and separation of anions in the electric field due to different electrophoretic mobility. Identification and quantitative determination of the analyzed anions are performed using indirect detection by measuring the UV absorption.

MEASUREMENT RANGE

Anions Measurement range, mg/L
Chloride, bromide, nitrite, sulfate, nitrate, ortho-phosphate 0.1–50
Fluoride 0.1–25

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Determination of inorganic anions in aqueous matrices according to EPA 6500 and ASTM D6508-10 test methodsDownload application file
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