Royal Society of Chemistry Analyst competition
“We recently took part in the Royal Society of Chemistry Schools’ Analyst Competition at Lancaster University, where we worked as analytical chemists to investigate a real-world forensic scenario, and one of our groups came away winning the competition. Congratulations to Ellis and Zachary, two of our A level students and Jenny who is one of our IB students who formed the winning trio!
The challenge involved determining the cause of a mysterious death by analysing a range of samples using different laboratory techniques. This required careful planning, teamwork, and precise data analysis to reach reliable conclusions.
We investigated whether a coffee sample had been tampered with by determining its caffeine content using a back titration method. From this, we calculated the original caffeine content, accounting for dilution and reaction ratios.
We also used thin-layer chromatography to separate pigments in different lipstick samples and compared Rf values to identify a match with the forensic sample. This relied on accuracy in spotting and measurement to produce clear and reliable results.
Finally, we analysed an unknown cream by extracting and measuring its oil content using gravimetric analysis. By calculating percentage composition and comparing results with known samples, we were able to identify the substance.
During the process, we faced challenges such as selecting the correct calculations for each stage and managing time effectively when multiple tasks had to be carried out simultaneously. By working collaboratively and dividing responsibilities efficiently, we were able to overcome these issues and maintain accuracy in our results.
Overall, it was a valuable opportunity to apply chemistry beyond the classroom, develop practical and analytical skills, and gain experience working in a university lab environment. We are also very thankful for the warm hospitality and support of Lancaster University during this incredible experience.”
— Mrs Tracy Moore, Head of Science & Chemistry
