ISO 11905-1 Total Nitrogen Determination
The ISO 11905-1 standard is a widely recognized method for determining total nitrogen in water and wastewater samples. This service is essential for quality managers, compliance officers, R&D engineers, and procurement teams who need accurate measurement of total nitrogen to ensure regulatory compliance and protect environmental standards.
The method described by ISO 11905-1 involves the use of a flow injection analyzer (FIA) system or continuous flow analyzer (CFA). The process begins with the collection of water samples, which are then treated to remove interfering components such as phosphate and chloride ions. This treatment is critical for ensuring accurate results.
The total nitrogen content is determined through the oxidation of ammonia to nitrite by a catalytic converter, followed by conversion to nitrate using a suitable oxidant (such as sodium hypochlorite). The resulting nitrate is then reduced back to nitrite via a catalyst and measured spectrophotometrically. This method provides a precise measurement of total nitrogen, which includes ammonia, organic nitrogen compounds, and inorganic nitrates.
Our laboratory adheres strictly to the ISO 11905-1 standard, ensuring that our results are reliable and repeatable. We use state-of-the-art FIA systems and CFA instruments to provide accurate measurements of total nitrogen content. Our experienced team of analysts is dedicated to delivering high-quality results in a timely manner.
The importance of this test cannot be overstated. Total nitrogen levels can have significant impacts on aquatic ecosystems, human health, and the environment. By providing accurate measurements, we help our clients ensure compliance with local and international regulations such as those set by the Environmental Protection Agency (EPA) in the U.S., or similar bodies worldwide.
Our laboratory is equipped to handle a wide range of sample types, from industrial wastewater to municipal effluent. We pride ourselves on offering a comprehensive service that includes specimen preparation, analysis, and reporting. Our expertise extends beyond just ISO 11905-1; we also offer other water quality testing services such as pH measurement, dissolved oxygen determination, and more.
Scope and Methodology
| Step | Action | Description |
|---|---|---|
| 1 | Sample Collection | Collect water samples from the source of interest, ensuring proper preservation and handling. |
| 2 | Treatment | Remove interfering compounds such as phosphate and chloride ions using a suitable chemical treatment method. |
| 3 | Oxidation | Oxidize ammonia to nitrite using a catalytic converter at an appropriate temperature. |
| 4 | Reduction | Convert nitrate back to nitrite for spectrophotometric measurement. |
| 5 | Spectrophotometry | Determine the absorbance of nitrite at a specific wavelength and calculate total nitrogen content. |
Benefits
Achieve regulatory compliance with local and international standards.
Ensure environmental protection by accurately measuring total nitrogen levels.
Promote sustainable practices within industrial processes through precise monitoring of water quality.
Enhance safety for workers and the public by identifying potential risks associated with high levels of total nitrogen.
Support R&D efforts in developing more efficient waste treatment methods.
Enable procurement teams to make informed decisions regarding water quality management systems.
Eurolab Advantages
Our laboratory offers several advantages when it comes to ISO 11905-1 total nitrogen determination:
State-of-the-art equipment and software ensure precise measurements.
A highly experienced team of analysts provides accurate results in a timely manner.
We offer comprehensive specimen preparation services to ensure sample integrity.
Our laboratory is accredited by ISO/IEC 17025, ensuring the highest standards of quality and reliability.
We provide detailed reports that include all relevant data for easy interpretation.
