| Arsenic (As) is reduced by metallic zinc and the formed AsH3 is absorbed in pyridine containing silverdiethyldithiocarbamante (Ag-DDC). AsH3 reacts with Ag-DCC and produces a red color which is photometrically determined at 540 nm.
Note: This analysis is only performed on food grade calcium chloride.
| Normal Measuring Range |
0.5-60 mg/kg |
| Quantification Limit |
0.5 mg/kg |
|