Development of a Multiresidue Method for Endocrine-Disrupting Pesticides by Solid Phase Extraction and Determination by UHPLC-MS/MS from Drinking Water Samples

Abstract A rapid and efficient method based on solid phase extraction and liquid chromatography–tandem mass spectrometry was validated, allowing the determination of the endocrine-disrupting herbicides (acetochlor, alachlor, amitrole and atrazine), fungicides (carbendazim, triadimefon, penconazole and propiconazole), and insecticides (carbaryl and carbofuran) in drinking water. Low method detection limits (0.01–0.64 ng/L) and method quantification limits (0.03–2.13 ng/L) were obtained with satisfactory recoveries and precision for the endocrine-disrupting pesticides. The method was applied for real drinking water samples collected in the area of the city of Hangzhou (Zhejiang, China); the results showed that carbendazim, atrazine and acetochlor were detected in the drinking water samples and acetochlor was the most detected analyte.

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Rapid Determination of PAHs in Drinking Water Samples Using Solid-Phase Extraction and HPLC with Programmed Fluorescence Detection

Journal of Liquid Chromatography &amp Related Technologies ◽

10.1080/10826079608015813 ◽

1996 ◽

Vol 19 (19) ◽

pp. 3135-3146 ◽

Cited By ~ 13

Author(s):

M. N. Kayali-Sayadi ◽

S. Rubio-Barroso ◽

C. Beceiro-Roldan ◽

L. M. Polo-Diez

Keyword(s):

Drinking Water ◽

Solid Phase Extraction ◽

Fluorescence Detection ◽

Water Samples ◽

Solid Phase ◽

Rapid Determination ◽

Phase Extraction ◽

Drinking Water Samples

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Determination of pesticides in the source and drinking waters in Londrina, Paraná, Brazil

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n3p1153 ◽

2019 ◽

Vol 40 (3) ◽

pp. 1153 ◽

Cited By ~ 1

Author(s):

Laura Fernanda Condota Borba de Souza ◽

Cassiana Caroline Montagner ◽

Mariana Bortholazzi Almeida ◽

Emília Kiyomi Kuroda ◽

Cristiane Vidal ◽

...

Keyword(s):

Water Samples ◽

Solid Phase ◽

Source Water ◽

Brazilian Legislation ◽

Drinking Waters ◽

Liquid Chromatography Tandem Mass ◽

Maximum Allowable Concentrations ◽

The City ◽

Drinking Water Samples

The Brazilian agricultural model is based on the intensive use of pesticides. Once in the environment, these compounds might target hydric sources, mainly through soil lixiviation or during crop application, exposing water biota as well as humans to contaminants. The objective of this research was identify the presence of 14 pesticides (ametrine, atrazine, azoxystrobin, carbendazim, carbofuran, clomazone, chlorpirifos, diuron, hexazinone, imidacloprid, malathion, simazine, tebuconazole and tebuthiuron) in source water samples and drinking water samples from the city of Londrina, Paraná State, Brazil. 24 water samples were collected biweekly from December 2014 to October 2015. The sample preparation was done using Solid Phase Extraction (SPE) with 3 mL/500 mg C-18 cartridges. Pesticide determination was performed applying Liquid Chromatography tandem Mass Spectrometry (LC-MS/MS). The frequencies of detection of some compounds in source water were: atrazine (85%), azoxystrobin (95%), carbendazim (83%), diuron (75%), imidacloprid (95%), simazine (12%), hexazinone (4%), tebutiuron (4%) and tebuconazole (33%). In the water supply, the following were detected: atrazine (79%), azoxystrobin (95%), carbendazim (8%), diuron (83%), imidacloprid (95%), simazine (12%), hexazinone (4%), tebuthiuron (8%) and tebuconazole (33%). Some of these compounds are included in Brazilian legislation, and in these cases, the concentrations determined in this study varied between 241 and 7 ng L?¹, which were lower than the maximum allowable concentrations for each of the compounds.

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