50ml含Cd2+5.0ug的溶液，用平啉显色剂后于428nm波长用0.5cm比色皿测得A=0.46.求摩尔吸收系数。
正确答案:
根据伯朗-比尔定律知：A=Kbc
C=5.0ug/.50ml=50mg/50l=0.005/112.41/50=8.9*10-7
K=A/bc=0.46/0.5*8.9*10-7=1.03*10+6
C=5.0ug/.50ml=50mg/50l=0.005/112.41/50=8.9*10-7
K=A/bc=0.46/0.5*8.9*10-7=1.03*10+6
答案解析:有
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