Simultaneous determination of phenylureas and triazines in water, by capillary gas chromatography with ion trap detection and large volume injection

Abstract

Abstract. A GC method is described for the simultaneous determination of triazines and phenylureas in aqueous samples by large volume injection with a Programmable Temperature Vaporisator injector (PTV) and ion trap detection (ITD). The analytical column (DB 5MS, 30 m, 0.25 mm, 0.25 µm) is connected to a pre-column (DB 5MS, 5 m, 0.25 mm, 0.25 µm) via a cross piece valve (MCS) to prevent residual solvant vapour from polluting the analytical column. The 8 pesticides (4 triazines and 4 ureas) are determined by this method, the linearity is improved using 2 Fisher test. The detection and the quantification limits are also determined for each compounds and are less than 0.10 µg/L which is the limit fixed by the ECC reglementation on drinking water.

Application of GC/MS/MS to food product analysis (in French).

“…Des méthodes ont été publiées décrivant l'analyse de phtalates [11], de triazines [12], de pesticides organochlorés [13] et de chlorophenols [14] dans des eaux de boisson, ou de propylène et d'éthy-lène glycol dans des anchois [15].…”

Simultaneous determination of 15 phenylurea herbicides in rice and corn using HPLC with fluorescence detection combined with UV decomposition and post-column derivatization

“…Despite their benefits in increasing agricultural production, herbicides, including phenylurea compounds, can have a negative impact on the environment [1,2]. The wide use of herbicides leads to bioaccumulation through the food chain, so that these compounds can eventually pose a risk to animals and humans.…”

“…Phenylurea herbicides are widely used because of their inhibition of photosynthesis that provides pre-and post-emergence control of many annual and perennial weeds in rice, corn, soybean, cotton and potato crops [1,3]. Owing to their high toxicity [4] and possible carcinogenicity, the determination of phenylurea herbicides at low concentrations in agricultural samples is of prime importance.…”

Assessing the transfer of pesticides to the atmosphere during and after application. Development of a multiresidue method using adsorption on Tenax and thermal desorption-GC/MS

“…The intensive use of pesticides all over the world led to ubiquitous contamination of exposed and remote areas, not only in water [1,2,3,4,5,6] and soil [7,8] but also in the atmosphere [9,10,11,12,13,14,15,16,17,18,19,20,21,22], as a result of drift during spraying [22,23], volatilisation and wind erosion [24,25,26,27,28,29]. It is known that air is a good pathway for transportation and re-deposition leading to the contamination of non-target areas [30] and may induce some risks for human health [31,32], wildlife and forest ecosystems [9,20,33].…”