16.片劑中常用輔料硬脂酸鎂對下列哪種方法有干擾

A.氧化還原法                                                B.紫外分光光度法

C.非水堿量法                                                D.重氮化法

17.下列哪個藥物不能用重氮化法測定含量

A.對乙酰氨基酚                                            B.苯巴比妥

C.鹽酸普魯卡因                                            D.對氨基水楊酸鈉

18.中國藥典規(guī)定的維生素C的含量測定方法為

A.中和法                                                       B.紫外分光光度法

C.碘量法                                                       D.旋光法

19.能和醋酸鉛發(fā)生反應(yīng)的藥物為

A.苯巴比妥                                                   B.司可巴比妥

C.異戊巴比妥                                                D.硫噴妥鈉

20.維生素C注射液中的抗氧劑對含量測定產(chǎn)生干擾時，一般如何處理

A.加丙酮                                                       B.加酸

C.加弱氧化劑                                                D.選擇合適波長