M816/Potentiometric Determination of Phosphate in Fertilizer

The application describes the potentiometric determination of phosphate in fertilizer sample. The potential change is monitored using a half-cell ion selective electrode in combination with a specialised reference sensor.

Background

Phosphate ion, PO₄^3-, is the conjugated base of phosphoric acid, H₃PO₄, and is one of naturally occurring form of element phosphorus. Phosphate ions are integral components of many finished products and are often present in various industrial applications namely fertilizer, feed, food, detergents, personal hygiene, and construction, etc. As there is rapidly increase in demand for industrial phosphate, the needs for fast and reliable phosphate determination technique become increasingly important.

This application note includes:

• Introduction
• Sample Preparation and Procedures
• Solutions and Chemicals
• Chemistry
• Instruments and Accessories
• Method in Detail
• Results and Remarks

And method files (.lmt and .xml) for direct import and implementation on the instrument.