THE CHOICE OF METHOD FOR SAMPLE PREPARATION OF OIL PRODUCTS IN ATOMIC SPECTRAL ANALYSIS
The most effective procedure for the sample preparation of oil products with the application of surfactants to extract copper followed by the ultrasonic treatment has been developed. To plot a calibration curve for the copper determination by atomic absorption and inductively coupled plasma atomic emission spectroscopy, the copper acetylacetonate is used; this makes it possible to maximize the closeness in chemical composition of calibration solutions and those under analysis and to increase the accuracy and precision of the proposed method.