Highly Integrated and Mobile Sensor System for Dissolved Organic Matter in Stream Ecosystems

Abstract

The impact of agricultural land use on the composition of dissolved organic matter (DOM) and its effects on the aquatic carbon cycle are still largely unknown. A sensor for dissolved DOM in stream ecosystems based on fluorescence measurement was developed. It’s an easy to use handheld optical system for online monitoring of DOM under field-conditions. For the determination of DOM two indices are used, namely the freshness index (BIX) and the fluorescence index (FIX).

Keywords

• DOM
• fluorescence sensor
• BIX
• FIX
• freshness index
• fluorescence index
• stream ecosystems
• agriculture