The product can quickly detect the arsenic content in the ore. This technology uses Agilent UltrAA lamps to allow arsenic to be detected with high levels of other base metals through a flame, without the need to extract arsenic separately or use a different detection technique.
Arsenic presents a unique challenge in flame atomic absorption spectroscopy (AAS) due to its low concentration levels, which are difficult to determine alongside high levels of base metals like iron, nickel, and cobalt. Traditional techniques such as hydride generation or graphite atomization are often too slow for rapid screening applications.
The document details a method using Agilent UltrAA boosted discharge hollow cathode lamps combined with a nitrous oxide-acetylene flame. This approach allows for the determination of low-level arsenic in a single extracted solution without separate extraction procedures, utilizing wavelengths at 189.0 nm and 193.7 nm that are not normally available on other systems.
The limits of detection ranged from 0.05 to 0.14 mg/L in final solution.
The most sensitive conditions are found at 189.0 nm using an air-acetylene flame.
The procedure requires treating a milled ore sample of 1 g with mixed acid reagents.