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For the sake of the nature. Outstanding catalyst- and chemical-free water analysis at 1,200°C

QuickTOCultra - Outstanding analysis at 1,200°C

QuickTOCultra - The online TOC analyser with the ultra high temperature method at 1,200°C

With regards to national and international regulations of water markets, the constant control of water quality becomes more and more important. The continuous monitoring from complex industrial and municipal waste water over process water to pharmaceutical pure water occupies a special place, from an ecological as well as economical point of view.

A whole variety of pollutants can be present in water, which cannot be determined individually. At least not without considerable analytical effort and within short time. This is why the so-called sum parameters are used such as the TOC (Total Organic Carbon) and the TNb (Total Nitrogen bound). For an exact TOC/ TNb measurement all carbon/ nitrogen compounds must be reliably combusted. LAR Process Analysers AG has developed the ultra high temperature method at 1,200°C which meeting the requirements, without the need of any catalysts. Below this temperature a complete oxidation of hydrocarbons is evidently not possible. For example, carbon bonds of carbonates only break fully at a combustion temperature higher than 1,150°C. Basically, lower temperatures deliver less exact measurement results. For this reason, the catalytic high temperature oxidation at 680 to 1,100°C uses catalysts to improve their oxidation potential. However, the performance of the catalysts is lowered over time. This decrease of performance affects the measurement results. It constantly makes new calibration necessary until eventually the catalyst has to be replaced.

Other measurement methods require oxidants and other hazardous chemicals to improve their oxidation potential. Additionally, the oxidation potential of chemical methods is relative since particles and more complex carbon compounds can only be partially digested or even not at all. With regards to the latest standards of occupational safety and environmental protection these methods are not recommended.

The LAR ultra high temperature method at 1,200°C guarantees the complete oxidation of carbon and nitrogen bonds, resulting in exact and reliable measurements – without catalysts or chemicals. On the market, the catalyst-free thermal oxidation technique has proved itself in hundreds of applications worldwide.

The total organic carbon (TOC) is one of the most important sum parameters in the assessment of the organic pollution of water. Since it includes all carbon compounds as one mass, it is exactly defined and an absolute quantity. Therefore, it may be determined directly.

Read more about TOC measurement methods.

Total organic carbon analyzers of LAR Process Analysers AG

The chemical oxygen demand (COD) indicates the amount of oxygen which is needed for the oxidation of all organic substances in water and is thus an important indicator for water analysis. It is considered in the planning and controlling of treatment, as well as assessing its efficiency, thus forming the basis for the calculation of waste water charges.

The COD can be determined in laboratory or online, whereby these methods significantly differ in duration and consumables used.

Read more about COD measurement methods.

COD analyzers of LAR Process Analysers AG

The biochemical oxygen demand (BOD) indicates the amount of oxygen which is needed for the biological degradation of organic substances in water.

Since the generally used BOD5 excludes the nitrification part of the process, this parameter is poorly suited for the control of waste water treatment plants. Alternatively, the total BOD is well-suited, due to the determination of the nitrogen as well as the carbonaceous part of biological degradation.

Read more about the online measurement of BOD.

Toxicity is described as the direct harmful effect of a substance on organisms. These effects can already occur at low concentraions of toxic substances and are dependent on the incubation period and the dosage.

Some test methods that are available on the market can detect toxicity by using fish, daphnia, molluscs, algae or luminous bacteria and testing whether a water sample has a toxic effect on the organisms. They do not, however, identify exactly which toxins are present.

Read more about online toxicity measurements.

BOD / toxicity analyzers of LAR Process Analysers AG

The total nitrogen bound (TNb) shows the pollution of water caused by nitrogen compounds. Nitrogen may be present as ammonia, ammonium salts, nitrites, nitrates and organic nitrogen compounds.

In contrast to single measurements of the above-mentioned components, the TNb determination contains all these substances in a single analysis process.

Read more about online TNb measurements.

The total phosphorus (TP) is a sum parameter that shows the organic and inorganic phosphorus compounds in water. Phosphorus is an essential nutrient for humans as well as flora and fauna. However, the substance – depending on its concentration– may cause serious damage.

Read more about online TP measurements.

TN TP analyzer of LAR Process Analysers AG