Method for determination of microelements of lead, cooper and cadmium in solutions that includes extraction concentration of those as diethyldithyocarbaminates to carbon tetrachloride of chlorophorm with adding to extraction of mix of butyl ether of acetic acid and acetone at volumetric ratio 1:(0,2-0,5) at volumetric ratio extraction: mix equal to 1:(0,7-1,0), treatment of mix with ultrasound and its injection to flame of nuclear-absorption spectrometer, at that treatment is carried out at simultaneous effect of ultrasound with frequency 18-100 kHz at intensity 0,5-1,0 W/cmand ultrasound with frequency 1,0-2,5 MHz at intensity 1,0-1,6 W/cmduring 20-40 s.
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机译：测定溶液中铅，铜和镉的微量元素的方法，该方法包括将二乙基二硫代氨基甲酸盐中的铅，铜和镉的萃取浓度提取到氯霉素的四氯化碳中，然后以体积比1：（0,2- 0,5）以体积比提取：混合物等于1 ::（0,7-1,0），用超声处理混合物，并将其注入核吸收光谱仪的火焰中，同时进行在0,5-1,0 W / cm强度下的频率为18-100 kHz的超声，在20-40 s内以1,0-1,6 W / cm强度的频率在1,0-2,5 MHz的超声。
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