A.4 000~1250cm-1 B.3300~3000cm-1 C.2400~2000cm-1 D.1475~1300cm-1 E.1250~400cm-1
A.1% B.2% C.0.02% D.0.2% E.0.1%
采用紫外分光光度法测定氯氮片的含量时,在308nm处测得供试品溶液的吸收度为 0.638,已知氯氮在308nm处的吸收系数()为319,则供试品溶液的浓度为().
A.0.005g/100ml B.0.005g/ml C.0.02g/100ml D.0.002g/ml E.0.002g/100ml
A.±0.02% B.±1.0% C.±0.001% D.±0.01% E.±0.1%
A.异烟肼 B.对乙酰氨基酚 C.巴比妥类 D.硝苯地平 E.盐酸利多卡因