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Occurrence of neonicotinoids in waste water from Bucharest treatment plant


A sensitive and selective method SPE-LC-MS/MS for the detection of widely used neonicotinoids (nitenpyram, thiamethoxam, clothianidin, acetamiprid, dinotefuran, imidacloprid) in waste water was developed. Chromatographic method provided good separation of the six most common neonicotinoids compounds, with limits of quantitation in the range 0.3–0.9 ng/l. The developed method was validated, obtaining corresponding results for all parameters. Recoveries after SPE ranged from 72% to 108.2% meanwhile intra-day and inter-day precision (RSD%) was situated between 4.6-7.7 and 5.2-11.3%, respectively. Occurrence and removal of these neonicotinoids in Bucharest WWTP were investigated. It was observed the presence of imidacloprid, thiamethoxan, dinotefuran and acetamiprid at ng/l in influent (60.8-80.2ng/l, 16.4-23.6ng/l, 4.4-6ng/l, 0.97-2.4ng/l, respectively) and effluent (average concentrations 53.3 ng/l; 14.6 ng/l; 3.7ng/l; 1.95 ng/l respectively). Neonicotinoids from influents were removed in low and similar proportions in the effluent. Thus, dinotefuran and acetamiprid were eliminated in the proportion of 23.2% of the waste water evacuated in the emissary, imidacloprid was eliminated with an average yield of 22.4% and thiamethoxam was removed by an average of 20.3%

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Publication details

The article was received on 09 Mar 2018, accepted on 09 May 2018 and first published on 09 May 2018

Article type: Paper
DOI: 10.1039/C8AY00510A
Citation: Anal. Methods, 2018, Accepted Manuscript
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    Occurrence of neonicotinoids in waste water from Bucharest treatment plant

    V. I. IANCU and G. L. Radu, Anal. Methods, 2018, Accepted Manuscript , DOI: 10.1039/C8AY00510A

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