I need to buy Teflon vessels which can hold lower volumes of sample for microwave digestion methods for ICP-MS. The current vessels are suitable for only larger volumes like 10ml. Are they any commercially available small volume (2ml) vessels?
Each microwave unit comes with its suitable turntable for your teflon cups.
The Microwave Mars 6 Xpress 20 ml and 10 ml:
In PFA Teflon, very suitable for a small amount of sample (less than 0.5 g) and extractions with 2-3 ml of solvent.
Hi Janith, It really depends on the microwave that you are using and what you are trying to achieve. As Lorena has pointed out, the smallest vessel size for the MARS6 system by CEM is in deed 10 mL, and you would only use about 20% of the volume for your digestion/extraction (http://cem.com/en/analytical-products/mars-6/replacement-parts/marsxpress-vessels/); but there is also methods out there that are able to use household microwave ovens and smaller PFA containers as reaction vessels, using house hold microwaves ovens or other heating appliances. Maybe you find some answers and inspirations in these publications:
Baldwin, S., Deaker, M., & Maher, W. (1994). Low-volume microwave digestion of marine biological tissues for the measurement of trace elements. The Analyst, 119(8), 1701–1704. http://doi.org/10.1039/an9941901701
Matos, W. O., Menezes, E. a., Gonzalez, M. H., Costa, L. M., Trevizan, L. C., & Nogueira, a. R. a. (2009). Partial microwave-assisted wet digestion of animal tissue using a baby-bottle sterilizer for analyte determination by inductively coupled plasma optical emission spectrometry. Spectrochimica Acta - Part B Atomic Spectroscopy, 64(6), 615–618. http://doi.org/10.1016/j.sab.2009.05.005
the article "A simple design for microwave assisted digestion vessel with low reagent consumption suitable for food and environmental samples" describe the smallest vessel which can be used for your repose. For more details please visit https://www.nature.com/articles/srep37186
Aravinna
Quartz tubes are also good option if you are using HPA(High pressure asher) for digestion. As teflon tube digestion is more suitable for ICP-OES.
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