Determination and Method Validation of Metamitron in Soil by RP-HPLC

Kumar, Satyendra; Tandon, Shishir; Sand, N. K.

doi:10.1007/s00128-013-1151-z

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…Hongji et al [ 11 ] analysed metamitron by HPLC with recovery of 100.19%. Metamitron estimation in soil with quantfiable limit was 0.008 μ g g −1 by HPLC which was reported by Kumar et al [ 15 ]. Estimation in soil and sugar beet at two application rates by HPLC had been given by Janaki et al [ 14 ].…”

Section: Resultssupporting

confidence: 58%

“…Little information is available in the literature regarding metamitron analysis by analytical methods in soil and food commodities. Determination of metamitron by various analytical methods, namely, bioassay method [ 4 ], polarography [ 5 ], voltammetric [ 6 , 7 ], vibrational spectrometry [ 8 ], HPLC [ 9 – 15 ], GC [ 16 ], and LC-MS/MS [ 17 ], has been reported.…”

Section: Introductionmentioning

confidence: 99%

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Development and Validation of GC-ECD Method for the Determination of Metamitron in Soil

Tandon

Kumar

Sand

2015

International Journal of Analytical Chemistry

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This paper aims at developing and validating a convenient, rapid, and sensitive method for estimation of metamitron from soil samples.Determination andquantification was carried out by Gas Chromatography on microcapillary column with an Electron Capture Detector source. The compound was extracted from soil using methanol and cleanup by C-18 SPE. After optimization, the method was validated by evaluating the analytical curves, linearity, limits of detection, and quantification, precision (repeatability and intermediate precision), and accuracy (recovery). Recovery values ranged from 89 to 93.5% within 0.05- 2.0 µg L−1 with average RSD 1.80%. The precision (repeatability) ranged from 1.7034 to 1.9144% and intermediate precision from 1.5685 to 2.1323%. Retention time was 6.3 minutes, and minimum detectable and quantifiable limits were 0.02 ng mL−1 and 0.05 ng g−1, respectively. Good linearity (R 2 = 0.998) of the calibration curves was obtained over the range from 0.05 to 2.0 µg L−1. Results indicated that the developed method is rapid and easy to perform, making it applicable for analysis in large pesticide monitoring programmes.

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Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Development and Validation of GC-ECD Method for the Determination of Metamitron in Soil

Tandon

Kumar

Sand

2015

International Journal of Analytical Chemistry

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“…Mostly, metamitron is quantified using conventional chromatographic techniques such as HPLC and GC-MS among others [3]. However, this sophisticated instrumentation is expensive, time consuming and requires sample preparation.…”

Section: Introductionmentioning

confidence: 99%

A Highly Sensitive Impedimetric Metamitron Microsensor Based on All-Solid-State Membrane Using a New Ion-Pair Complex, [3,3′-Co(1,2-closo-C2B9H11)2]−[C10H11ON4]+

et al. 2018

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An all-solid-state impedimetric microsensor based on impedimetric measurements for detecting the herbicide metamitron (MM) is reported in the present work. For this purpose, a novel metamitron ionophore has been prepared. It was based on the isolation of the metamitron monoprotonated form coupled to the metallocarborane anion, cobalt bis (dicarbollide), ([3,3′-Co(1,2closo-C2B9H11)2] − ) as an ion-pair complex of the type [3,3′-Co(1,2-closo-C2B9H11)2] − [C10H11ON4] + . Once the ion-pair complex was synthetized, it was incorporated to a PVC-type membrane including o-Nitrophenyloctylether (o-NPOE) as plasticizer. The membrane was then drop-cast on top of polypyrrole-modified gold working microelectrodes. A quick response of 30 s has been provided by the microsensor in the range of metamitron concentrations between 10 −8 M and 10 −4 M with a limit of detection of 10 −8 M. Furthermore, it was highly selective toward metamitron, when compared to some possible interfering compounds as imazapic and carbetamide.

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“…Metamitron (4-amino-3-methyl-6-phenyl-1,2,4-triazin-5(4H)-one) is a selective systemic triazinone herbicide used as pre- and/or post-emergence in sugar beet, onion, and bean crops to control turf grass and broadleaf weeds1. It acts as an inhibitor of photosystem II and induces chlorotic and necrotic symptoms in leaves2.…”

mentioning

confidence: 99%

“…Some researchers reported that the degradation half-life of metamitron in soil ranged from less than 5 weeks to more than 14 weeks depending on the soil type and environmental conditions, such as temperature and moisture24. Due to its chemical stability and mobility, metamitron residues are often found in soil, plants, surface water, and groundwater15 and may pose a potential risk to the environment6. Therefore, there is an increasing concern regarding the rapid degradation or detoxification of metamitron residues in the environment.…”

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confidence: 99%

Characterization and genome functional analysis of a novel metamitron-degrading strain Rhodococcus sp. MET via both triazinone and phenyl rings cleavage

Fang

Cao

et al. 2016

Sci Rep

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A novel bacterium capable of utilizing metamitron as the sole source of carbon and energy was isolated from contaminated soil and identified as Rhodococcus sp. MET based on its morphological characteristics, BIOLOG GP2 microplate profile, and 16S rDNA phylogeny. Genome sequencing and functional annotation of the isolate MET showed a 6,340,880 bp genome with a 62.47% GC content and 5,987 protein-coding genes. In total, 5,907 genes were annotated with the COG, GO, KEGG, Pfam, Swiss-Prot, TrEMBL, and nr databases. The degradation rate of metamitron by the isolate MET obviously increased with increasing substrate concentrations from 1 to 10 mg/l and subsequently decreased at 100 mg/l. The optimal pH and temperature for metamitron biodegradation were 7.0 and 20–30 °C, respectively. Based on genome annotation of the metamitron degradation genes and the metabolites detected by HPLC-MS/MS, the following metamitron biodegradation pathways were proposed: 1) Metamitron was transformed into 2-(3-hydrazinyl-2-ethyl)-hydrazono-2-phenylacetic acid by triazinone ring cleavage and further mineralization; 2) Metamitron was converted into 3-methyl-4-amino-6(2-hydroxy-muconic acid)-1,2,4-triazine-5(4H)-one by phenyl ring cleavage and further mineralization. The coexistence of diverse mineralization pathways indicates that our isolate may effectively bioremediate triazinone herbicide-contaminated soils.

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Determination and Method Validation of Metamitron in Soil by RP-HPLC

Cited by 12 publications

References 5 publications

Development and Validation of GC-ECD Method for the Determination of Metamitron in Soil

Development and Validation of GC-ECD Method for the Determination of Metamitron in Soil

A Highly Sensitive Impedimetric Metamitron Microsensor Based on All-Solid-State Membrane Using a New Ion-Pair Complex, [3,3′-Co(1,2-closo-C2B9H11)2]−[C10H11ON4]+

Characterization and genome functional analysis of a novel metamitron-degrading strain Rhodococcus sp. MET via both triazinone and phenyl rings cleavage

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