Concepedia

Extraction-Spectrophotometric Determination of Berberine in Crude Drugs by the Formation of a New Ion Associate

Tadao Sakai, Noriko Ohno, Hideto SASAKI, Teruyuki Hyuga

Analytical Sciences · 1991 · 15 citations · 3 references

DOI

Concepts

References

3

Spectrophotometric determination of cationic surfactants with Orange II

George V. Scott · Analytical Chemistry · 1968 · 119 citations

, , +10

Germicidal Quaternary Ammonium Salts in Dilute Solution A Colorimetric Assay Method

M.E. Auerbach · Industrial & Engineering Chemistry Analytical Edition · 1943 · 103 citations

, , +6

Spectrophotometric determination of trace amounts of quaternary ammonium salts in drugs by ion-pair extraction with bromophenol blue and quinine

Tadao Sakai · The Analyst · 1983 · 40 citations

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