Test Methods for Arsenic Contamination in Food

Example : didestruksi with a solution of arsenic acid, then reacted with the reagent according to the method used, the color that arises is read with a spectrophotometer. The method can be used include; spectrophotometry molibdenium blue, silver diethyldithiocarbamate spectrophotometric and atomic absorption spectrophotometry.

Instant noodles:
Quality requirements include the condition (texture, aroma, flavor, color normal / acceptable); foreign objects do not exist; wholeness min. 90% b/b; water content (max frying process. 10.0% b/ b, max pengerigan process. 14.5% b/b) protein content (M \ i of flour min. 8.0%, mi of flour instead of min. 4.0% b/b) acid number max. 2 mg KOH / g oil; metal contamination (Pb max. 2.0 mg/kg, max 0.05 mg Hg/kg); As max. 0.5 mg/kg; microbial contamination (ALT max. 0.05 mg/kg); salmonella negative per 25 g, braids max. 1.0 x 10 3 colonies/g)

Test methods of metal contamination (Pb, Cu, Zn, Fe, tin) in the diet consists of hydrolysis (fruits, vegetables, meat, fish, food in cans); Pengabuan dry (milk powder, cocoa powder, fish, wheat flour, tomato sauce, basic ingredients of animal feed); Pengabuan Pengabuan wet and dry using a microwave digester (Hg in food); atomic absorption spectrophotometer with graphite furnace (Cu, Fe, Ni, Pb in pure or crude oil); Pengabuan dry, dissolving the oxide-metal oxides and absorbance readings with an atomic absorption spectrophotometer with graphite furnace (Cu, Fe, Ni, Zn in oil)

Example didestruksi with a solution of arsenic acid, then reacted with the reagent according to the method used, the color that arises is read with a spectrophotometer. The method can be used include; spectrophotometry molibdenium blue, silver diethyldithiocarbamate spectrophotometric and atomic absorption spectrophotometry.