학술저널
ZnNH4AsO4-EDTA법에 의한 비산의 정량법
Chelatometric Determination of Arsenic Acid as Zinc-Ammonium-Arsenate
- 대한약학회
- 약학회지
- 제5권 제1호 (1960년)
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1960.1016 - 19 (4 pages)
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Quantitative determination of Arsenic acid by precipitation of Arsenic acid as ZnNH4AsO4 and titration of Zn in the precipitate by EDTA has been investigated. Conclusion are as follows: 1) ZnNH4AsO4 was Soluble in NH4Cl-NH4OH buffer solution of pH 10 and back-titration was unnecessary as in the case of MgNH4AsO4 2) The end point was clear whether AsO4-3 present or not. 3) More simple and rapid method than that of Gravi metric method. 4)Could be determined within 0.3% error
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