<prompt> All of the following method used for detecting heavy metals, except :Harrison Gilroy testParaffin testNeutron activation analysisAtomic adsorption spectrospcopy  <response>: B i.e. Paraffin Test Paraffin or Dermal Nitrate test is now an obsolete test, which was used earlier to determine if a suspect had discharged a fire arm by testing for presence of nitrate not heavy metals.Q 