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样品采集在直径一厘米的圆形试纸上,采样后将试纸放在刻度试管(2.5,5及17.5毫升的刻度)内,管内含有2.5毫升硝酸一过氧化氢混合溶液,盖好塞子,猛摇数分钟以使铅尘溶解(直径在20μ以上的质点,如金属铅,一氧化二铅,一氧化铅,二氧化铅,红铅,铅白,铬酸铅,酒石酸铅,硅酸铅,硼酸铅,碘化铅,氯化铅,氟化铅,砷酸铅,磷酸,亚磷酸及硬脂酸的盐及硷式盐,铅酸钙振摇2分钟后完全溶解,硫化铅及硫酸铅振摇5分钟完全溶解,但硷式硫酸铅很快就溶解),加氨性氰化物一重亚硫酸盐一构橼酸盐溶液到17.5毫升
The sample was collected on a circular test paper one centimeter in diameter. After the sample was taken, the test paper was placed in a graduated test tube (2.5, 5 and 17.5 ml graduations) containing 2.5 ml of a nitric acid-hydrogen peroxide mixed solution, A few minutes to dissolve the lead dust (particles of 20μ diameter or more, such as metallic lead, lead monoxide, lead monoxide, lead dioxide, red lead, lead white, lead chromate, lead tartrate, lead silicate, boric acid Lead, lead iodide, lead chloride, lead fluoride, lead arsenate, phosphoric acid, phosphorous acid and stearic acid salts and basic salts, calcium lead shaker 2 minutes after the complete dissolution of lead sulfide and lead sulfate vibration 5 minutes shaking completely dissolved, but the alkaline lead sulfate dissolves very quickly), add ammoniac cyanide bis-sulfite citrate solution to 17.5 ml