The rapid analysis of products bought from the market is an important factor in reducing the length of time that the public may be exposed to dangerous products. At the time of writing imported wax crayons are a regular concern to regulators. This rapid solid sampling test using wax melted into a Delves microsampling cup then heating close to the flame to firstly volatilise the organic fraction then ashing the residue by pushing the cup into a slightly hotter zone is all the pre-treatment required prior to atomising the sample in the hottest part of the flame to allow determination of lead or cadmium by Atomic Absorption. Comparison with the statutory method, which should always be used as a follow up on presumptive positives showed very few false positive results.
|Publication status||Published - Jul 1988|
|Event||4th National Biennial Analytical Atomic Spectrometry Symposium - University of York, York, United Kingdom|
Duration: 29 Jul 1988 → 1 Aug 1988
Conference number: 4
|Conference||4th National Biennial Analytical Atomic Spectrometry Symposium|
|Period||29/07/88 → 1/08/88|
Bibliographical noteThis was a belated addition to the programme and the abstract was presented as an addendum in the form of a loose page.
- Flame AAS
- Solid Sampling
- Screening Test