PMID- 30381166 OWN - NLM STAT- MEDLINE DCOM- 20190102 LR - 20190102 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 266 DP - 2018 Nov 15 TI - Rapid analysis of tristyrylphenol ethoxylates in cucumber-field system using supercritical fluid chromatography-tandem mass spectrometry. PG - 119-125 LID - S0308-8146(18)30946-4 [pii] LID - 10.1016/j.foodchem.2018.05.122 [doi] AB - Tristyrylphenol ethoxylates (TSPxEOs), nonionic surfactant adjuvants, are widely used to replace alkylphenols in many agricultural formulations. Herein, a rapid and sensitive method based on a modified quick, easy, cheap, effective, rugged, and safe "QuEChERS" and supercritical fluid chromatography-tandem mass spectrometry (SFC-MS/MS) method was developed to quantify TSPxEOs in cucumber, leaves, and soil. Following optimization, the tested oligomers were fully separated within 8 min. The matrix-matched calibration standards showed satisfactory linearity with coefficients of determination (R(2)) >/= 0.991. The limits of quantification (LOQs: 0.001-0.048 mug kg(-1)) were excellent for TSPxEOs (x = 6-29). The average recoveries at three (low, medium, and high) fortification levels were ranged between 62.5% and 112.9% with relative standard deviations (RSDs)