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试样经硝酸、高氯酸分解后,制成溶液,在汞发生器中用氯化亚锡将二价汞还原成汞原子蒸气,通过空气载入到测汞仪的吸收池中,汞原子对汞灯波长253.7nm的共振谱线有强烈的吸收,在一定的汞浓度范围内,吸收值与汞蒸气的浓度成正比。本方法的测定范围是0.00-10.00ug/L。
After the sample is decomposed by nitric acid and perchloric acid, the solution is made into a solution, and the stannous chloride is used to reduce the divalent mercury into mercury atom vapors in the mercury generator, and the vapors are loaded into the absorption cell of the mercury analyzer by air, and the mercury atom On the mercury lamp wavelength 253.7nm resonance line has a strong absorption, in a certain range of mercury concentration, absorption and mercury vapor concentration is proportional to. The method of determination of the range is 0.00-10.00ug / L.