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vario TOC cube

vario TOC cube
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Application note ^elementar TOC / TC analyses in soil with the vario TOC cube The vario TOC cube can easily be reconfigured from liquid to solid mode, so that the instrument can analyse virtually any type of sample: from liquid, particulate containing samples, semi-solids to actual solid For the TC analyses the samples have been weighed into tin boats. For TOC analyses the samples have been weighed into silver boats and acidified using a 1M HCI solution. The acidified samples have been dried one hour at 100 °C and have then been packed into tin boats, in order to enhance the combustion temperature to > 1000 °C (in order to combust the silver completely). The samples cannot be acidified in the tin boats directly since the strong acid will damage the tin packing material. Two certified soil samples have been analysed in order to test the performance of the vario TOC cube. Furthermore, three soil samples have been analysed. The soil standards have been analysed with a high accuracy and precision. A complete recovery of carbon was achieved. The TC and TOC content of the three soil samples could be analysed with high precision. Besides the excellent performance for liquid samples, the vario TOC cube can also analyse solid samples without limitations. Analysensysteme GmbH email: irfo@elementar.de

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vario TOC cube
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