[Computer-assisted analysis of nitrates in biological material]

Area of Science:

• Agricultural Chemistry
• Analytical Chemistry

Context:

• Accurate nitrate (NO3-) determination is crucial for plant and food product analysis.
• Traditional methods involving extended drying procedures are time-consuming.
• Developing rapid and reliable analytical techniques is essential for routine testing.

Purpose:

• To present an optimized method for quantitative nitrate determination in plant and food samples.
• To eliminate the need for extended drying procedures by utilizing fresh or shock-dried materials.
• To achieve high accuracy and reduce analysis time using ion-sensitive electrodes and continuous calibration.

Summary:

• A new method allows for rapid quantitative nitrate (NO3-) determination in plant, vegetable, and fruit products.
• Utilizing fresh, macerated, or shock-dried ground material bypasses lengthy drying steps, reducing sample analysis time to approximately 45 minutes.
• Continuous calibration of solid-internal-contact ion-sensitive nitrate electrodes, coupled with a mathematico-statistical error model, ensures low calibration errors and high accuracy.

Impact:

• Significantly reduces the time required for nitrate analysis in agricultural and food products.
• Enhances the reliability of nitrate measurements by minimizing calibration errors through optimized electrode calibration techniques.
• Facilitates routine, high-throughput analysis of nitrate content, supporting quality control and research in food science and agriculture.