Results 81 to 90 of about 15,356 (203)

Effect of some selected insecticides on the activity of invertase at different stages of pentatomid bug, Cyclopelta siccifolia W. [PDF]

open access: yes, 2009
The invertase enzyme which has been reported to occur in the digestive tract of several insects is believed to be an important enzyme for digestion and utilization of sucrose by insects.
Dayananda, G.Y.   +2 more
core   +2 more sources

Integration of Colorimetric Sensing Dyes and Multi‐Substrate Arrays for Food Quality and Safety Monitoring: Design, Optimization, and Analysis

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 1, January 2026.
ABSTRACT As food safety issues gain increasing attention, the need for rapid, accurate, and low‐cost detection techniques becomes essential. Colorimetric sensors, known for their rapid response, high sensitivity, low cost, and readily observable results, are playing an increasingly important role in food quality inspection. This review article provides
Jingfei Shen   +6 more
wiley   +1 more source

The Quantitative Determination of Insecticides in Tobacco and Tobacco Smoke. 2nd Report: The Determination of Carbamate Residues - Methoden zur quantitativen Bestimmung von Insektiziden in Tabak und Tabakrauch. II. Mitteilung: Zur Bestimmung von Carbamat-Insektiziden

open access: yesContributions to Tobacco and Nicotine Research, 1968
A thin-layer chromatographic method has been developed for the qualitative and quantitative determination of carbamate residues on tobacco. The method's inferior limit of detection is 80 ng for Carbaryl and 200 ng for Undene. The coefficient of variation
Nesemann E., Schröder R., Seehofer F.
doaj   +1 more source

Changes in Total Protein in Liver and Kidney of Freshwater Fish, Channa Punctatus (Bloch.) After Intoxication of Carbaryl [PDF]

open access: yes, 2017
Pesticides are one group of toxic compounds linked to human use that have a profound effect on aquatic fauna. Fish may be good indicators of contamination by pollutants because their biochemical responses are quite similar to found in mammals. Studies on
Kumar, A. (Ashvani)   +2 more
core   +2 more sources

Implications of differences between temperate and tropical freshwater ecosystems for the ecological risk assessment of pesticides [PDF]

open access: yes
Despite considerable increased pesticide use over the past decades, little research has been done into their fate and effects in surface waters in tropical regions.
Brink, P.J., van den, Daam, M.A.
core   +2 more sources

Identification and quantification of carbamate pesticides in dried lime tree flowers by means of excitation-emission molecular fluorescence and parallel factor analysis when quenching effect exists [PDF]

open access: yes, 2014
A non-separative, fast and inexpensive spectrofluorimetric method based on the second order calibration of excitation-emission fluorescence matrices (EEMs) was proposed for the determination of carbaryl, carbendazim and 1-naphthol in dried lime tree ...
Ortiz Fernández, Mª Cruz   +2 more
core   +1 more source

Adsorption Thermodynamics of Carbaryl onto Four Texturally Different Indian Soils

open access: yesAdsorption Science & Technology, 2011
The adsorption thermodynamics of carbaryl onto four divergent textured Indian soils from methanol/water mixtures (f s = 0.1) have been investigated at 25 °C and 50 °C via adsorption isotherms, the Freundlich equation, distribution coefficient ...
R.P. Singh   +2 more
doaj   +1 more source

Silver/graphene-modified Boron Doped Diamond Electrode for Selective Detection of Carbaryl and Paraquat from Water

open access: yesInternational Journal of Electrochemical Science, 2018
A novel silver/graphene-modified boron doped diamond electrode (BDDGRAg) was obtained to determine selectively carbaryl and paraquat pesticides from aqueous solution, based on the electrochemical oxidation of carbaryl (CR) and the electrochemical ...
Aniela Pop   +3 more
doaj   +1 more source

Influence of Rice Production on the Quality of Water in Tailwater Collection Reservoirs [PDF]

open access: yes, 1996
Since maintaining high water quality standards in the state remains a high priority, monitoring for pesticides in water sources must continue. Determining the type, concentration, and characteristics of any pesticides present in water supplies are ...
Dewell, R. A., Lavy, T. L.
core   +2 more sources

Relations of environmental contaminants, algal toxins, and diet with the reproductive success of American alligators on Florida Lakes [PDF]

open access: yes, 2001
(113 page ...
Arnold, Beverly S.   +3 more
core  

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