July 25, 2021, 10:03:37 PM
Forum Rules: Read This Before Posting

Topic: Chloroauric acid under security X-ray  (Read 821 times)

0 Members and 1 Guest are viewing this topic.

Offline Robocop

  • Very New Member
  • *
  • Posts: 1
  • Mole Snacks: +0/-0
Chloroauric acid under security X-ray
« on: August 30, 2019, 08:33:14 PM »
Purely hypothetical query. If metals and other dense materials show, under X-ray a blue colour and less dense organic compounds show green. If you were to dissolve gold in aqua regia. Will it show as green or blue?

Offline Enthalpy

  • Chemist
  • Sr. Member
  • *
  • Posts: 3641
  • Mole Snacks: +300/-57
Re: Chloroauric acid under security X-ray
« Reply #1 on: September 03, 2019, 06:42:22 AM »
Welcome, Robocop!

I don't grasp what shows a colour. Is it the material itself, say by fluorescence, which would need a badly strong X-ray intensity? Or does a screen show these colours after computer processing of a detector data?

Some X-ray imagers only represent with a colour palette the absorption of one X-ray source. Others use several X-ray energies to distinguish the elements, for instance to detect objects rich in -NO2 or -NO3.

Sponsored Links