Determination of organotin compounds (OTC) at low levels in seawater by solid-phase extraction (SPE) and gas chromatography-pulsed flame photometric detection (GC-PFPD)

Turk, Martina Furdek; Senta, Ivan; Kniewald, Goran

doi:10.1080/03067319.2018.1426755

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…The QuEChERS method was rapid and convenient, whereas the measurement of TPhTH was a great issue. SPE, used for determination of OTCs in seawater, could be an appropriate alternative because it could provide good recoveries and high sensitivities.…”

Section: Resultsmentioning

confidence: 99%

“…OTPs can be retained not just by reverse‐phase packing, but can also be adsorbed using a cation‐exchange column under acidic conditions . MCX was selected as a purification material because it can provide a dual mode of retention.…”

Section: Resultsmentioning

confidence: 99%

“…Organotin compounds (OTCs) are widely used as thermal stabilizers in the plastics industry and as biocides in shipyards, marine buildings and agricultural fields . Nowadays, OTCs are a diverse group of widely distributed environmental pollutants and regarded as one of the most toxic anthropogenic pollutants ever purposely introduced into the marine environment . The OTCs are classed as endocrine‐disrupting chemicals, which might be a significant risk to humans and living organisms .…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous determination of three organotin pesticides in fruits and vegetables by high‐performance liquid chromatography/tandem mass spectrometry

Chen

Mou

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale:The presence of organotins in the environment affects food safety, making it important to monitor the levels of organotin pesticides (OTPs) in fruit and vegetable samples. Methods:In the present study, a simple and low cost method for simultaneous determination of three OTPs (azocyclotin, fenbutatin oxide and triphenyltin hydroxide) in vegetable and fruit samples was developed and validated, based on solid-phase extraction and liquid chromatography/tandem mass spectrometry.Results: Extraction with acetonitrile containing 0.2% formic acid positively affected the recoveries of the three OTPs. Moreover, the simultaneous purification of the three OTPs was the most efficient using mixed-mode cation-exchange cartridges and 5.0% ammonium hydroxide in methanol as eluent, and, in this case, mild matrix effects (−9.3% to 21.6%) were obtained for the three OTPs monitored. The developed method reached limits of quantification of 1 μg kg −1 , and linearity was satisfactory, with correlation coefficients >0.995. A fortification study showed that when spiked at 1.0-50.0 μg kg −1 the mean trueness values were from 72.3 to 110.0% in all matrices (three vegetables and three fruits). The intra-day precision was <14.1%, and the inter-day precision (n = 11) was <18.2%. Conclusions:The proposed method was successfully applied to the simultaneous analysis of three OTPs in vegetables and fruits.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%