A new indicator and test paper for the semi-quantitative determination of carbaryl in traces in water

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Analytical Letters; (United States)

DOI:https://doi.org/10.1080/00032719008052428· OSTI ID:5624093

Rathore, H S; Saxena, S K ^[1]

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1. Aligarh Muslim Univ. (India)

A chromatographic paper impregnated with sodium hydroxide (test paper), when spotted with a carbaryl solution and dipped in 2,6-dichloroquinone-4-chloroimine (Gibbs reagent) in benzene, turns blue with a violet tinge. The color formation is based upon the hydrolysis of carbaryl to give 1-naphthol which reacts with 2,6-dichloroquinone-4-chloroimine to produce indophenol that turns blue with a violet tinge in alkaline medium. The test paper can be successfully used for the detection and semi-quantitative determination of carbaryl at ppm levels in water.

• OSTI ID: 5624093
• Journal Information: Analytical Letters; (United States), Journal Name: Analytical Letters; (United States) Vol. 23:1; ISSN ANALB; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AQUEOUS SOLUTIONS
AROMATICS
BIOLOGICAL MATERIALS
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DECOMPOSITION
DISPERSIONS
DRINKING WATER
ENVIRONMENTAL MATERIALS
EXPERIMENTAL DATA
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLYSIS
HYDROXY COMPOUNDS
INDICATORS
INFORMATION
INSECTICIDES
LYSIS
MATERIALS
MIXTURES
NAPHTHOLS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PESTICIDES
PHENOLS
QUANTITATIVE CHEMICAL ANALYSIS
QUINONES
SAMPLE PREPARATION
SEPARATION PROCESSES
SOILS
SOLUTIONS
SOLVOLYSIS
WATER