To determine statistically if the US improved the performance of analyses, the means of different parameters were compared between US and ESI using a one-tailed paired Student’s t test; p values less than 0.05, 0.01, and 0.001 were considered significant, highly significant, and very highly significant, respectively.
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Comparison of electrospray and UniSpray, a novel atmospheric pressure ionization interface, for LC-MS/MS analysis of 81 pesticide residues in food and water matrices.
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