Reference | Test type | Compound detected | Reagent used | Description/color reaction |
---|---|---|---|---|
Ananth, Kalthom, and Me (Ananth et al. 2014) | Dermal nitrate/paraffin test | Nitrate | Diphenylamine dissolved in strong sulfuric acid | Picked up GSR on paraffin wax + reagent gives a blue color spot indicating the presence of nitrates |
Spot test | Lead (Pb) | Sodium rhodizonate | GSR sample + reagent gives a pink coloration indicating the presence of lead. | |
Saverio Romolo and Margot (2001) | Walker test/Marshal and Tewari test | Nitrite | 2-Naphthylamine sulfanilic acid and citric acid | GSR sample + reagent gives a pink coloration for the presence of nitrite |
Ananth et al. (2014) | Modified Griess test | Nitrite | Griess reagenta | GSR sample + reagent gives a rose color for the presence of nitrite |
Dalby et al. (2010) | Harrison and Gilroy’s test | Lead (Pb), barium (Ba), and antimony (Sb) | • Triphenyl methylarsonium iodide alcoholic solution • Sodium rhodizonate • Dilute hydrochloric acid | GSR sample + triphenyl methylarsonium iodide alcoholic solution gives orange ring color for the presence of Sb. Two drops of sodium rhodizonate are added to the center of the orange ring, color changes to red for Pb or Ba or both. A drop of dilute hydrochloric acid is added to the red spot, color changes to blue for Pb. No color change is indicative of Ba |
Ananth et al. (2014) | Lunge testb | Nitrocellulose (NC) | Lunge reagent | GSR sample + reagent gives a red azo color for NC |
Niewoehner (2015) | Zincon reagent testc | Zinc (Zn) and titanium (Ti) | Zincon reagent | GSR sample + reagent gives a blue-colored complex for Zn and Ti |