The halogen addition method in atomic absorption spectrophotometry of organometallic complexes

Petroleum

“…A serious problem in the determination of metals in organic materials is that different absorbances are obtained when a metal is associated with different organic molecules. Kashiki et al (35J,36J) studied this problem and found that the addition of halogens (e.g., iodine) to the sample eliminates this difficulty. Lanthanum has been found by Mostyn et al (47J) to be an effective releasing agent for ppm concentrations of calcium in the presence of larger concentrations of aluminum, barium, sodium, phosphorus, and vanadium.…”