Quantification of organophosphate insecticides in drinking water in urban areas using lyophilization and high-performance liquid chromatography–electrospray ionization-mass spectrometry techniques

Sinha, Sukesh Narayan; Vasudev, K.; Rao, M. Vishnu Vardhana; Odetokun, Martins

doi:10.1016/j.ijms.2010.11.006

Cited by 31 publications

(19 citation statements)

References 26 publications

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“…The extracted ion chromatograms of alachlor, malathion, dimethoate, chlorpyrifos and metribuzin (10 µg · L -1 spikes) are shown in Figure 2. The isolation of ions of OP pesticides was carried out in a similar fashion as per the reported method [10,14,17,18]. In first series of experiment the full scan spectra were recorded, using manual tuning in FIA mode after that the characteristic stable ions were isolated for MRM transition for confirmation and quantification of five pesticides in water samples.…”

Section: Resultsmentioning

confidence: 99%

“…The inter-day percentage recoveries, the relative standard deviation (RSD), limit of quantification (LOQ) and the limit of detection (LOD) were determined as per the reported methodology [17,18], and the results are shown in Table 4. The obtained percent recoveries for all these pesticides were found to be in the range of 96% -103% of the standard value (Table 2) [19,20].…”

Section: Resultsmentioning

confidence: 99%

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Liquid Chromatography Mass Spectrometer (LC-MS/MS) Study of Distribution Patterns of Base Peak Ions and Reaction Mechanism with Quantification of Pesticides in Drinking Water Using a Lyophilization Technique

Sinha¹

2011

AJAC

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In the process of the development of agriculture, pesticides have become an important tool as an insecticide to kill the insect from plant for boosting food production. Therefore the insecticides/pesticides and herbicides have been used in India for agriculture setting. In this connection a sensitive method for the quantification of 5 pesticides in drinking water samples to the µg· L -1 level has been developed. The paper also describes the effect of dissociation energy on ion formation and sensitivity of pesticides in water samples. The structure, ion formations, distribution of base peak and fragmentation schemes were correlated with the different dissociation energies. The new ion was obtained at different mass to charge ratio, which was the characteristic ion peak of targeted pesticide. Additionally, a simple solvent lyophilization followed by selective analysis using a liquid chromatography-mass spectrometry method was used. This method was accurate (≥98%) as it possesses limits of detection in the 6 -38 ng· L -1 range, and the percentage relative standard deviations are less than 8.62% at the low µg· L -1 end of the method"s linear range. The percentage recovery of all the pesticides at the 0.1 µg · L -1 levels of detection ranges from 92% -104%. This method was used for the quantification of pesticides in water samples collected from different parts from urban city of Hyderabad, India. In this study, 13 water samples were analyzed in which all samples showed detectable level of the malathion and alachlor. The concentration of pesticides ranged from 0.004 µg · L -1 to 0.691 µg · L -1 exceeded to the maximum residual limit of Indian standard.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Liquid Chromatography Mass Spectrometer (LC-MS/MS) Study of Distribution Patterns of Base Peak Ions and Reaction Mechanism with Quantification of Pesticides in Drinking Water Using a Lyophilization Technique

Sinha¹

2011

AJAC

Self Cite

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“…In similar cases, when the SPE was not conclusive, either a "dilute and shoot approach" [49] or the lyophilisation of aqueous samples was applied to recover very hydrophilic antibiotics [50] or pesticides [51]. In this study, it was decided to try the evaporation under reduced pressure of the natural water samples, testing different temperature values (30,40,50,60, 70 • C).…”

Section: Optimisation Of the Recovery Conditionsmentioning

confidence: 99%

Analysis of antithyroid drugs in surface water by using liquid chromatography–tandem mass spectrometry

Pérez‐Fernández

Marchese

Gentili

et al. 2014

Journal of Chromatography A

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“…Organochlorine and organophosphate pesticides have been reported in municipal drinking water supply from surface sources in Jaipur (Bakore, 2004) and Hyderabad (Sinha et al 2011) respectively. In both cases the source of contamination is stated to be agricultural land-uses in the catchment of drinking water supply reservoirs.…”

Section: Water Supply and Waste Watermentioning

confidence: 99%

Land, Infrastructure and Ecological Sustainability in Indian Cities

Wankhade¹,

Balakrishnan²

2011

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Land is one of the most contested and valuable of natural resources in urban areas. While many of the contestations may be primarily due to its economic value as territory, land is far more than the observable space. Land is an integral part of the urban ecological fabric and is closely linked to the dynamics of other resources like water and energy. The relationship between the nature and intensity of land-use, resource consumption and ecosystem functioning is of critical significance for urban sustainability. Urban spatial patterns which are mostly a result of planning paradigms and decisions, land availability and transportation choices can significantly influence urban resource consumption. This paper first examines broader issues around land, focusing specifically on land cover, land use, and densities, and then examines the inter-linkages between land and the infrastructure sectors of water, energy, and transport. The paper examines the current literature on Indian cities as well as some key international articles, focusing in particular on identifying the knowledge gaps and next steps for research, practice and policy in this domain.

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Quantification of organophosphate insecticides in drinking water in urban areas using lyophilization and high-performance liquid chromatography–electrospray ionization-mass spectrometry techniques

Cited by 31 publications

References 26 publications

Liquid Chromatography Mass Spectrometer (LC-MS/MS) Study of Distribution Patterns of Base Peak Ions and Reaction Mechanism with Quantification of Pesticides in Drinking Water Using a Lyophilization Technique

Liquid Chromatography Mass Spectrometer (LC-MS/MS) Study of Distribution Patterns of Base Peak Ions and Reaction Mechanism with Quantification of Pesticides in Drinking Water Using a Lyophilization Technique

Analysis of antithyroid drugs in surface water by using liquid chromatography–tandem mass spectrometry

Land, Infrastructure and Ecological Sustainability in Indian Cities

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