Indirect atomic absorption spectrometric determination of ammonia, thiosulfate and cyanide in an unsegmented flow system

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Analytical Letters; (United States)

DOI:https://doi.org/10.1080/00032719008053446· OSTI ID:5637561

Esmadi, F T; Kharoaf, M; Attiyat, A S ^[1]

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1. Yarmouk Univ., Irbid (Jordan)

A flow injection analysis method (FIA), has been developed for the determination of cyanide, thiosulfate and ammonia by atomic absorption spectrometry (AAS). Aqueous solution of the analyte was injected into an on-line column containing glass beads and packed with silver chloride and deionized water was used as the carrier. The analyte dissolves the silver chloride and the dissolved silver complex is introduced to the nebulizer of the AAS. This method has proved to be sensitive, simple and precise. Detection limits of 1.0 {times} 10{sup {minus}7} M, 5.0 {times} 10{sup {minus}7}M and 5.0 {times} 10{sup {minus}6}M were obtained for thiosulfate, cyanide and ammonia, respectively. The precision of the technique was 2.0%, 2.4% and 1.4% in case of thiosulfate, cyanide and ammonia, respectively. The effects of flow rate and sample volume on the FIA/AAS signals are presented.

• OSTI ID: 5637561
• Journal Information: Analytical Letters; (United States), Vol. 23:6; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
AMMONIA
ABSORPTION SPECTROSCOPY
CYANIDES
THIOSULFATES
AQUEOUS SOLUTIONS
CALIBRATION
CHEMICAL REACTIONS
EXPERIMENTAL DATA
IMPURITIES
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLE PREPARATION
SENSITIVITY
SILVER COMPLEXES
TRACE AMOUNTS
CHEMICAL ANALYSIS
COMPLEXES
DATA
DISPERSIONS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
SOLUTIONS
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES
400102* - Chemical & Spectral Procedures
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)