(2) DETECTION OF POISON)

TEST
Marsh

Arsenic
- Mirror-like Precipitate
- Soluble in NaOCl

TEST
Modified Duquenois

Marijuana
- Red color (THC) on TLC

TEST
Reinsch

Heavy Metals
- Antimony (Sb)
- Arsenic (As)
- Bismuth (Bi)
- Mercury (Hg)
needs confirmation via AAS

Heavy Metals (Reinsch)
- Mercury (Hg)

Silvery

Heavy Metals (Reinsch)
- Bismuth (Bi)

Shiny Black

Heavy Metals (Reinsch)
- Arsenic (As)

Dull Black

Heavy Metals (Reinsch)
- Antimony (Sb)

Purple Black

TEST
Rodillon/ Millon

Phenol
- Light to dark red color (mercurous phenate or nitrate phenate)

TEST
Nessler (Mercuric KI)

Chloroform (vs Chloral hydrate)
- Yellow Precipitate (Iodoform)

TEST
Nylander

Bismuth
- White Precipitate (bismuth subnitrate)

TEST
Phenylisocyanide

Nitrobenzene
- addition of chloroform forms aniline and phenylisocyanide (irritable odor detected)