An Assessment of Laboratory Sample Splitting Techniques

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Author(s) Nenuwa Olushola B. | Adetiloye Adeola
Pages 358-364
Volume 6
Issue 10
Date October, 2016
Keywords Absolute Difference, Riffler, Sampling, Splitting, Sub-Sampling

Abstract

Two different laboratory sample splitting methods were used to prepared representative sub-samples. Performance evaluation tests were conducted using the coning and quartering sampling technique and the Jones riffle sample splitter, the bulk sample was iron chips and sand mixture. The sample splitting exercise was repeated thrice for each method and the results obtained were recorded. On completing the performance evaluation tests, the percentage content of the iron chips and sand in the parent sample were compared with the percentage contents in the splitted samples. It was observed that the value of the absolute difference between the percentage content of sand in the parent sample and splitted sample for the Jones riffle sample splitter is lower compared to that of coning and quartering technique. It was also observed that the value of the absolute difference obtained for iron content in the parent and splitted sample is also lower for sampling with Jones riffle splitter than when coning and quartering technique was used. Jones riffle sample splitter is therefore recommended for splitting dry granular samples whenever a cheap, efficient, accurate and less sophisticated technique for sample splitting is desired.

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