Beitrag zur R�ckstandsanalytik des Aminotriazols

Pribyl, J.; Herzel, F.; Schmidt, G.

doi:10.1007/bf00443950

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…100 µg/kg) [16]. It became possible to extract amitrole, which is readily soluble in water, in the organic phase and determine it by thin layer chromatography only after it had been converted to the danyl derivative with 5-dimethylaminonaphthalene-l-sulfochloride [17]. Using this technique the excretion of unchanged amitrole was first detected in human urine after an attempted suicide [18].…”

Section: Discussion Of the Methodsmentioning

confidence: 99%

Amitrole (3‐Amino‐1,2,4‐triazole) [Biomonitoring Methods, 1999]

Lewalter¹,

Steiner²

2012

The MAK‐Collection for Occupational Health and Safety

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Published in the series Analyses of Hazardous Substances in Biological Materials , Vol. 6 (1999) The article contains sections titled: General principles Equipment, chemicals and solutions Equipment Chemicals Calibration standards Specimen collection and sample preparation Specimen collection Sample preparation Operational parameters for gas chromatography Analytical determination Calibration Calculation of the analytical result Standardization and quality control Reliability of the method Precision Accuracy Detection limit Sources of error Discussion of the method

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Section: Discussion Of the Methodsmentioning

confidence: 99%

Amitrole (3‐Amino‐1,2,4‐triazole) [Biomonitoring Methods, 1999]

Lewalter¹,

Steiner²

2012

The MAK‐Collection for Occupational Health and Safety

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show abstract

“…5,6 In 1971, the use of amitrole in food crops was banned by the EPA, since it was proved to be a carcinogenic agent for animals. 10,11 Various analytical methods such as liquid chromatography, 10,12 high performance liquid chromatography, 5,13 gas chromatography, 14,15 thin-layer chromatography 16 and capillary electrophoresis 17 have been developed for the determination of amitrole. 8,9 The European Economic Commission (EEC) directive imposed an allowed upper limit of 0.1 μg L −1 for amitrole in drinking water.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore detection of amitrole at this concentration level is incredibly important to regulate amitrole toxicity in water resources. 10,11 Various analytical methods such as liquid chromatography, 10,12 high performance liquid chromatography, 5,13 gas chromatography, 14,15 thin-layer chromatography 16 and capillary electrophoresis 17 have been developed for the determination of amitrole. However, these methods encountered difficulties due to the unfavorable properties of amitrole, such as high solubility in water, high polarity, low volatility, difficulty in extraction and preconcentration from aqueous samples, and poor solubility in organic solvents.…”

Section: Introductionmentioning

confidence: 99%

A simple electrochemical platform based on pectin stabilized gold nanoparticles for picomolar detection of biologically toxic amitrole

Mani

Devasenathipathy

Chen

et al. 2015

Analyst

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Amitrole is a biologically toxic nonselective herbicide which contaminates surface and ground waters at unprecedented rates. All reported modified electrodes that detect amitrole within sub-micromolar to nanomolar levels were based on the electro-oxidation of amitrole. Herein, we developed a new conceptual idea to detect picomolar concentrations of amitrole based on calcium cross linked pectin stabilized gold nanoparticle (CCLP-GNP) film modified electrode which was prepared by electrodeposition. When the electrochemical behavior of amitrole was investigated at the CCLP-GNP film, the reduction peak current of the GNPs linearly decreased as the concentration of amitrole increases. We have designed a determination platform based on the amitrole dependent decrease of the GNP cathodic peak. The described concept and high sensitivity of square wave voltammetry together facilitate the great sensing ability; as a result the described approach is able to reach a low detection limit of 36 pM which surpassed the detection limits of existing protocols. The sensor presents a good ability to determine amitrole in two linear concentration ranges: (1) 100 pM-1500 pM with a detection limit of 36 pM; (2) 100 nM-1500 nM with a detection limit of 20 nM. The preparation of CCLP-GNPs is simple, rapid and does not require any reducing agents.

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“…Analytical methods for the analysis of amitrole include thin-layer chromatography (TLC) , capillary electrophoresis (CE) − , gas chromatography (GC) − , and liquid chromatography (LC) after derivatization − . Because of amitrole's suitability for aqueous samples, HPLC is the analytical technique of choice for polar compounds.…”

Section: Introductionmentioning

confidence: 99%

Determination of Amitrole in Environmental Water Samples with Precolumn Derivatization by High-Performance Liquid Chromatography

Sun

Liu

Wang

et al. 2009

J. Agric. Food Chem.

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Amitrole is a nonselective polar herbicide that can easily pollute ground and surface waters because of its high solubility in water. A precolumn derivatization high-performance liquid chromatographic method for amitrole analysis has been developed. Derivatization of amitrole was performed with 4-chloro-3,5-dinitrobenzotrifluoride (CNBF). The derivatization conditions and the influence of elution composition on the separation were investigated. In pH 9.5 H(3)BO(3)-Na(2)B(4)O(7) media, the reaction of amitrole with CNBF was complete at 60 degrees C after 30 min. The stability of the derivative under light irradiation and room temperature in methanol-water samples was demonstrated. The derivatized amitrole was separated on a K C(18) column (250 mm x 4.6 mm, 5 microm) at room temperature, and UV detection was applied at 360 nm. The separation of derivatized amitrole was achieved within 18 min by gradient elution mode. The method correlation coefficient was 0.9995, in concentrations ranging from 1.59 to 318 mg L(-1). The detection limit of amitrole was 0.16 mg L(-1) with a signal-to-noise ratio of 3. The proposed method was applied to the quantitative determination of amitrole in environmental water with recoveries of 92.0-103.0% and RSDs of 2.22-6.26, depending on the sample investigated. This method has good accuracy and repeatability that can be used to quantify amitrole in environmental water.

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Beitrag zur R�ckstandsanalytik des Aminotriazols

Cited by 13 publications

References 4 publications

Amitrole (3‐Amino‐1,2,4‐triazole) [Biomonitoring Methods, 1999]

Amitrole (3‐Amino‐1,2,4‐triazole) [Biomonitoring Methods, 1999]

A simple electrochemical platform based on pectin stabilized gold nanoparticles for picomolar detection of biologically toxic amitrole

Determination of Amitrole in Environmental Water Samples with Precolumn Derivatization by High-Performance Liquid Chromatography

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