H‐Point Standard Addition Method for Simultaneous Determination of Maneb and Zineb

Kaur, Pawanpreet; Gupta, Usha

doi:10.1155/2009/514251

Cited by 4 publications

(2 citation statements)

References 25 publications

(22 reference statements)

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“…The following guidelines were used to choose the proper wavelengths to apply the H-Point Standard Addition Method [27][28][29][30]: i. The sample's signal should be linear with the analyte concentration at the two chosen wavelengths.…”

Section: H-point Standard Addition Methods (Hpsam)mentioning

confidence: 99%

Simultaneous Quantitative Determination of Ciprofloxacin and Hydrocortisone by H-Point Standard Addition Method

Khalil Mahmood,

Takleef Dheyab Sallal,

Hassan Mohammed Liaibi

et al. 2024

IHJPAS

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Ciprofloxacin (Cip) and hydrocortisone (Hyd) were simultaneously measured as hydrochloride and sodium succinate, respectively, using the H-point standard addition method (HPSAM). The approach can precisely identify Cip in the presence of Hyd with various analyte-to-interference ratios (5:5, 5:10, 10:5, 10:10) µg.mL-1, in mixed samples containing (1-5µg.ml-1) of Cip, at the wavelengths of (236 and 257) nm. In the same way, Hyd was analyzed in the presence of Cip in different analytes with an interference ratio of (5:5, 5:10, 10:5, 10:10) µg.mL-1, in mixed samples containing (1-5 µg.mL-1) of Hyd, at wavelengths of (266 and 278) nm. The satisfactory results show good reproducibility of the developed method (RSD equals 0.9735-1.6825 and 0.9692-1.7671 for Cip and Hyd, respectively). The results also show that the excipients had no influence on the assaying of the above drugs (Recovery, 98.87–101.73). The recommended technique has successfully been used to determine the Cip and Hyd in pharmaceutical composites simultaneously with an RSD range of (0.972 to 1.671) and (0.898 to 1.820) for Cip and Hyd, respectively.

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Section: H-point Standard Addition Methods (Hpsam)mentioning

confidence: 99%

Simultaneous Quantitative Determination of Ciprofloxacin and Hydrocortisone by H-Point Standard Addition Method

Khalil Mahmood,

Takleef Dheyab Sallal,

Hassan Mohammed Liaibi

et al. 2024

IHJPAS

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“…HGC and EV are time consuming, poor sensitive and suffer from interferences. Dithiocarbamates can also be determined by other methods such as iodometry 11 , EDTA 12 , polarography 13 , determination of the pesticides as their metallic components [14][15] , derivative spectrophotometry 16 , RESEARCH ARTICLE spectrophotometry 17 , H-Point method 18 , silica nanoparticles 19 , chitin 20 , naphthalene 21 , flow injection spectrophotometry 22 . All of the above mentioned methods suffer from one or more disadvantages: (a) Methods other than gas chromatography (GC) are indirect and time consuming, and their sensitivity is quite low.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration of Ferbam [Fe(III) tris(dimethyldithiocarbamate)] Using 1-(2-Pyridylazo)-2-naphthol Modified β-Cyclodextrin Polymer

2014

Chem Sci Trans

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Abstract:In this study, β-Cyclodextrin polymer functionalized by 1-(2-pyridylazo)-2-naphthol (PAN) was synthesized and the resulting modified polymer was used for the preconcentration of Fe(III) tris(dimethyldithiocarbamate) by converting it into Fe(III)-PAN-β-CDP complex. For the described method, the effect of some analytical parameters, such as pH, sample volume, contact time and volume of the eluent, on the recovery of Fe(III) tris(dimethyldithiocarbamate) were investigated. The recovery values were found to be ≥95%. The developed method was utilized for the preconcentration and determination of Ferbam in different water samples.

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Solid-state UV–MALDI–MS assay of transition metal dithiocarbamate fungicides

Ivanova

Spiteller

2013

Environ Sci Pollut Res

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The determination of transition metal containing dithiocarbamate fungicides represents a challenging aspect of analytical object. They have a low stability, low solubility and stabilize versatile coordination monomers, dimers, disulfides and/or S-oxidized derivatives. Their diverse biological activities and agricultural implementation encompass plant prevention and crop protection against a variety of plants containing fungi and diseases of 400 pathogens and 70 cultures. Nonetheless, those dithiocarbamates (DTCs) are banned for agricultural use in Europe or have expiration at years 2016-2017 because of their highly toxic degradation products and/or metabolites, in particular ethylene thiourea; they found large-scale implementations in materials research and medicine. Despite the broad interdisciplinary of DTC application, due to the above reasons, they have received little attention in the rapidly growing field of analytical chemistry, and in particular, the analytical mass spectrometry. Therefore, the study reported on qualitative, quantitative and structural analysis of ten DTCs (1-10), using the matrix assisted laser desorption/ionization (UV-MALDI)-Orbitrap-mass spectrometry (MS) contributed considerably to the implementation of the method for environmental and foodstuffs monitoring. Its ultrahigh resolving power and capacity for direct solid-state analysis, at limited number of sample pretreatment steps, at concentration levels of analytes of up to femtogram per gram resulted to achievement of a highly precise analytical information for these non-trivial objects. The presented fully validated method and technique is based on the successful ionization of DTCs embedded in three novel organic salts (M1-M3). In this regard, the reported MS and the single-crystal X-ray diffraction data as well as the quantum chemical one are able to correlate the molecular structures in condense and in the gas phase. Despite the novelty of the fundamental methodological character of the research reported, the promising metrology contributed to the applied aspect of the UV-MALDI-MS as a robust analytical method for environmental and foodstuffs monitoring, which is tested on two commercially available crop protecting products such as Mancozeb® and Antracol®, respectively.

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H‐Point Standard Addition Method for Simultaneous Determination of Maneb and Zineb

Cited by 4 publications

References 25 publications

Simultaneous Quantitative Determination of Ciprofloxacin and Hydrocortisone by H-Point Standard Addition Method

Simultaneous Quantitative Determination of Ciprofloxacin and Hydrocortisone by H-Point Standard Addition Method

Preconcentration of Ferbam [Fe(III) tris(dimethyldithiocarbamate)] Using 1-(2-Pyridylazo)-2-naphthol Modified β-Cyclodextrin Polymer

Solid-state UV–MALDI–MS assay of transition metal dithiocarbamate fungicides

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