ZnNH4AsO4-EDTA법에 의한 비산의 정량법

• 영문명: Chelatometric Determination of Arsenic Acid as Zinc-Ammonium-Arsenate
• 발행기관: 대한약학회
• 저자명: 서정현(Chung Hyen Suh)
• 간행물 정보: 『약학회지』제5권 제1호 (1960년), 16~19쪽, 전체 4쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1960.10.30

영문 초록

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