Determination of low molecular weight chlorinated organic compounds in polyamideanine epichlorohydrin solution

Abstract

Abstract A convenient and quick method has been developed for simultaneous detection of several low molecular weight chlorinated organic compounds (LMWC) in polyamideamine-epichlorohydrin (PAE) solution, using headspace-solid phase microextraction-gas chromatography (HS-SPME-GC). The method consists of extracting a sample containing 0.42 g/mL NaCl with an 85 µm polyacrylate (PA) coated fiber at an extraction temperature of 45 ∘ C {45^{\circ }}\text{C} , for an extraction time of 30 mins, and desorbing the analytes at 240 ∘ C {240^{\circ }}\text{C} for 6 mins. Under these optimized conditions, relatively low limits of detection (LOD) of the analytes, good linearity ( r 2 ≥ 0.9934 {r^{2}}\ge 0.9934 ) and precision (relative standard deviation ( RSD ≤ 4.38 % \text{RSD}\le 4.38\hspace{0.1667em}\% )) were obtained. Taking into account the matrix effect, standard addition methodology was applied to validate this method and recovery values were between 91.59 % and 109.69 %. This method is therefore well-suited for accurate determination of low levels of LMWC in PAE.