Optimization and Validation of LLE-LTP and QuEChERS Methodologies for Determining 2,4-D in Water Samples

Optimization and validation of liquid–liquid extraction with low-temperature purification (LLE-LTP) for determining fluopyram fungicide in water samples using HPLC-DAD

“…Previous studies have employed the same combination of organic solvents as the mobile phase for determining fluopyram by HPLC in water and food samples. 11,18,19…”

“…In this period, the matrix and its components are entrapped into the structure of ice, while the target analyte migrates to the liquid organic phase, and generally no additional clean-up step is necessary. 11,12 Therefore, the extract may be analyzed by analytical techniques, such as liquid chromatography or gas chromatography. However, to the best of our knowledge, no studies employing this methodology for determining uopyram in water samples have been completed so far.…”

“…Previous studies have employed the same combination of organic solvents as the mobile phase for determining uopyram by HPLC in water and food samples. 11,18,19 The third parameter evaluated was the mobile phase ow (Table 1), and the obtained chromatograms are presented in Fig. S5.…”