問題詳情

35 以原子吸收分光光度計測量鈣離子的時候,加入 lanthanum chloride 的目的為何?
(A)做為內部標準品
(B)消除蛋白質的干擾
(C)避免磷酸鹽的干擾
(D)與鈣離子結合以利測定

參考答案

答案:C
難度:適中0.557823
統計:A(8),B(21),C(82),D(12),E(0) #
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用户評論

PPMTPASS】評論

Lanthanum chloride does not enjoy many applications. A possible application involves the precipitation phosphate from solutions, e.g. in swimming pools to prevent algae growth. It has also shown use as a filter aid and an effective flocculent. Lanthanum chloride is also used in biochemical research to block the activity of divalent cation channels, mainly calcium channels. Doped with cerium, it is used as a scintillator material.