简介:文章名:GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF LEAD AND CADMIUM EXTRACTED FROM CERAMIC FOODWARE(石墨炉的)
This method describes procedures for using graphite furnace atomic absorption spectro简介:文章名:GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF LEAD AND CADMIUM EXTRACTED FROM CERAMIC FOODWARE(石墨炉的)
This method describes procedures for using graphite furnace atomic absorption spectroscopy
(AAS) to quantitatively determine lead and cadmium extracted by acetic acid at room
temperature from the food-contact surface of foodware. The method is applicable to food-
contact surfaces of silicate-based materials (earthenware, glazed ceramicware, decorated
ceramicware, decorated glass, and lead crystal glass) and is capable of determining lead
concentrations greater than approximately 0.005–0.020 μg/mL and cadmium concentrations
greater than approximately 0.0005–0.002 μg/mL, depending on instrument design. This
method also describes quality control procedures to check for contamination and matrix
interference and a specific analytical sequence of measurements that demonstrates proper
instrument operation during the time period in which sample solutions are analyzed.详细>