Modular Daisies – A Case Study

What is it?

Modular daisies are a children’s toy designed to aid in teaching counting, creating patterns and shapes, as well as recognising and sorting colours. It is suitable for children usually between the ages of three and five.
This set originally included forty four daisies and a threading lace. It currently has nine yellow, eleven red and nineteen blue daisies with the threading lace.
A single daisy is circular, measuring 43mm from petal to petal with a 4mm depth.

What was the method for testing?

The handheld Bruker S1 TITAN 800 XRF was used. The XRF was placed into its stand and each daisy was run for 60 seconds on the ROHS Plastics calibration mode. A Teflon blank standard and a green plastic standard was run before and after the testing of the daisies. Each daisy was then labelled in order.

The daisies were tested a second time. Before scanning they were cleaned with isopropyl alcohol and a cotton wool bud. After being cleaned and left to dry, the daisies were run in the same conditions as the initial testing.

What was discovered?

Overall the results were somewhat surprising. It is likely that the pigment in the colours influenced created large variation. The variation was seen between colours, not within them. That is, from red to yellow there was a large variation, but from red to red there was minimal.

In the blue daisies copper was most notably found.
Interestingly the daisies eight, twelve, thirteen, fourteen contained titanium. This was result was produced in both tests. It is unknown why titanium was found in only four out of the nineteen blue daisies.

Spectra 1: Overlay of red daisy ten, yellow daisy five, blue daisy six (light blue) and blue daisy eight (dark blue).

Spectra 2: Overlay of daisy six (light blue) with daisy eight (dark blue)

In the red daisies calcium, chromium and lead were most notably found.
The calcium in the red influenced the decision to clean the daisies and rerun the test. This was decided as it was a child’s toy, and residue from a spill was likely. This did not impact the spectra, and proved reproducibility of the test as previous spectra aligned well

In the yellow daisies barium, chromium, lead were most notably found.

Spectra 3: Red daisy ten

Spectra 4: Yellow daisy five

Recent Articles

The Tiny Powerhouses: Pumpkin Seeds

Findings of an ongoing regional evaluation study over concealed Proterozoic lithologies known to host magmatic nickel sulphides with potential to host other base-metal, gold and rare earth elements (“REE”) systems within the Fraser Range, Western Australia.

Read More »

Exploring Rare Earth Elements

Demand for Rare Earth Elements (REE) continues to increase as the globe migrates to renewable energy. Exploration for REE have significantly increased over the last

Read More »

About Automated Mineralogy

Automated mineralogy is a field that has seen significant growth and development in recent years. At its core, automated mineralogy involves the use of specialized

Read More »

Now Available

Portable Spectral Services’ Schedule of Hire, Support Services & Fees is now available!

Enquire Now