Microwave- induced Oxygen Combustion
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Anton Paar extends the versatility and flexibility of its Multiwave 3000 Microwave Sample Preparation System by introducing new accessories for the combustion of organic samples in closed, pressurized quartz vessels.
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Applications
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Oxygen bomb or flask combustion is widely used as a standard technique in sample preparation for ion chromatography. The innovative Microwave-induced Oxygen Combustion process (patents pending) delivers comparable results in less time, with excellent precision, for all kinds of combustible solids such as wood, paper, coal, food, polymers, organic compounds and even solid waste.
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Operating principle
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Volatile ions are trapped in slightly basic or acidic absorption solutions for subsequent direct determination by ion chromatography, voltammetry or atomic spectroscopy.
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Main advantages
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- Low blank levels and lower detection limits are achievable as only small amounts of reagents are needed and dilution steps before analysis will be avoided.
- Up to 8 samples can be processed in parallels, leading to unmatched sample throughput.
- Wet digestion rotors of the Multiwave 3000 system can be easily upgraded for the Microwave-induced Oxygen Combustion process, making it an economic alternative to steel bombs.
- Optional accessories for charging the reaction vessels with oxygen complete the modular design and make the handling safe, easy and very convenient.
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Microwave- assisted UV Digestion (MUV)
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The UV-supported sample digestion is a powerful technique for laboratories that determine heavy metals, nitrogen or phosphorus by atomic spectroscopy or voltammetry in liquid samples containing organic compounds, e.g. drinking water, seawater, effluents, sewage, body fluids or beverages.
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Main advantages
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- UV irradiation of dissolved compounds leads to the formation of highly reactive oxidative species which facilitate the decomposition of organic matter.
- Only minor amounts of reagents are needed for UV-supported reactions, which has a positive effect on blank levels and detection limits.
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