The Ninhydrin Process in Supercritical Carbon Dioxide

Abstract

Abstract Ninhydrin is a widely used reagent for the development of latent fingerprints on porous surfaces. For the past 20 years 1,1,2-trichlorotrifluoroethane (CFC113) has been used as the solvent of choice in the UK for ninhydrin because of its non-toxicity and non-flammability. With the phasing out of CFC solvents under the terms of the Montreal Protocol on the Control of Ozone Depleting Substances, the need for a suitable replacement has arisen. Supercritical CO2 has been found to be a potential replacement for CFC113 in the ninhydrin process. Furthermore, the present processes are two-stage (impregnation of reagent followed by development in an oven), whereas using supercritical CO2 development of fingerprints can be carried out in one stage.

Cite this work

No public copy is stored for this record, so only the metadata is cited.

Stored only when both papers are in the corpus — 16 citations exist upstream.

Papers that cite the same references — the relational fallback while embeddings are still backfilling.