A.253.7nm和228.8nm
B.228.8nm和253.7nm
C.357.9nm和253.7nm
D.253.7nm和357.9nm
E.357.9nm和228.8nm
[单选题]用原子吸收分光光度法测定汞和镉,其吸收波长分别是A.253.7nm和228.8nmB.228.8nm和253.7nmC.357.9nm和253.7nm
[单选题]原子吸收法测定Cr和Cd的吸收波长分别是A.228.8nm,253.7nmB.228.8nm,357.9nmC.357.9nm,228.8nmD.357.9nm,253.7nmE.357.9nm,283.3nm
[单选题,A2型题,A1/A2型题] 原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg,使用的波长(nm)分别是()。A . 283.3,357.9,228.8,253.7B . 283.3,253.7,228.8,357.9C . 357.9,253.7,228.8,283.3D . 228.8,283.3,253.7,357.9E . 357.9,253.7,228.8,283.3
[单选题]原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg,使用的波长(nm)分别是()。A.283.3,357.9,228.8,253.7B.283.3,2
[单选题]原子吸收分光光度法测定空气中Cd时,波长应选择A.228.8nmB.560.2nmC.253.7nmD.423.1nmE.357.9nm
[单选题,A2型题,A1/A2型题] 原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg的分析线波长(nm)分别是()。A . 283.3,57.9,228.8,253.7B . 283.3,253.7,228.8,357.9C . 357.9,253.7,228.8,283.3D . 228.8,283.3,253.7,357.9E . 357.9,253.7,228.8,283.3
[单选题]原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg的分析线波长(nm)分别是( )。A.283.3,57.9,228.8,253.7B.283.3,253.7,228.8,357.9C.357.9,253.7,228.8,283.3D.228.8,283.3,253.7,357.9E.357.9,253.7,228.8,283.3
[单选题]原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg的分析线波长(nm)分别是()。A.283.3,357.9,228.8,253.7B.283.3,2
[单选题]原子吸收分光光度法测定空气中Pb、Cr、Cd、Hg的分析线波长(nm)分别是()。A.283.3,357.9,228.8,253.7B.283.3,2
[单选题,A2型题,A1/A2型题] 冷原子吸收法测定汞时,对253.7nm波长有吸收能力的是()。A . 汞原子B . 一价的低汞原子C . 汞分子D . 二价的高汞原子E . 以上都不是