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采用湿法消解A法、B法与C法分别对油画棒进行消解后利用火焰原子吸收光谱法测定其中的铅含量。通过比较这三种消解方法的测定结果,发现A法优于B、C法。即采用A法对市场上购得的各种牌号的油画棒进行铅含量的测定,同时做加标回收率,回收率范围在95%-110%之间,表明利用该法对油画棒中铅含量的测定是可信的,从而对油画棒中的铅含量快速测定提供了方法。
The content of lead in the sample was determined by flame atomic absorption spectrometry (FAAS) after the digestion method of wet digestion A, B and C respectively. By comparing the results of the three digestion methods, we found that A method is superior to B and C methods. That is to say, the A method was used to determine the lead content of various grades of oil-paint sticks on the market, and the spiked recoveries were obtained at the same time. The recovery range was between 95% and 110% The determination of the content is credible, which provides a method for the rapid determination of the lead content in the wok.