Color reaction between 4-(2-pyridylazo)resorcinol and mercury(II) in the presence of surfactant, and improved spectrophotometric determinations of mercury(II) and cyanide ion with its coloring

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032718808059915· OSTI ID:6094897

Mori, I; Fujita, Y; Fujita, K; Nakahashi, Y; Kato, K; Nakamura, T

The reactions among 4-(2-pyridylazo)resorcinol (PAR), mercury(II) and/or cyanide ion in the presence of water soluble surfactants alone or combination were systematically investigated at about pH 9. The spectrophotometric determinations of mercury(II) and cyanide ion were investigated by using the PAR-mercury(II)-HPC complex (3 : 2 : 2 molar ratio) in the presence of N-hexadecylpyridinium chloride (HPC) alone; calibration graphs were rectilinear in the ranges of 0-40 ..mu..g mercury(II) and 0-10 ..mu..g cyanide ion in a final 10 ml with the apparent molar absorptivities of 5.9 /times/ 10/sup 4/ for mercury(II) and 2.5 /times/ 10/sup 4/ 1 mol/sup /minus/1/ cm/sup /minus/1/ for cyanide ion at 590 nm. The proposed method had advantages - rapidity, simplicity without solvent extraction, and sensitivity in comparison with reported solvent extraction methods. The interference of foreign ions decreased 1/2-1/4-fold compared with that in the presence of non-ionic surfactant alone.

• OSTI ID: 6094897
• Journal Information: Anal. Lett.; (United States), Journal Name: Anal. Lett.; (United States) Vol. 21:12; ISSN ANALB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AQUEOUS SOLUTIONS
AROMATICS
COLOR
COMPARATIVE EVALUATIONS
CYANIDES
DEVELOPERS
DISPERSIONS
EFFICIENCY
ELEMENTS
EXTRACTION
HYDROXY COMPOUNDS
MERCURY
METALS
MIXTURES
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANOLEPTIC PROPERTIES
PH VALUE
PHENOLS
PHYSICAL PROPERTIES
POLYPHENOLS
RESORCINOL
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
SURFACTANTS