As indicated in Figure 5 b, an increasing trend in the intensity of the two Hg species appeared when the pH was increased from 2.0 to 4.0.
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Fabrication of a Microfluidic-Based Device Coated with Polyelectrolyte-Capped Titanium Dioxide to Couple High-Performance Liquid Chromatography with Inductively Coupled Plasma Mass Spectrometry for Mercury Speciation.
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The sentences
As shown in Figure 4 b, a decreasing trend in both the t R of the two Hg species and the difference in the t R between CH 3 Hg + and Hg 2+ appeared when the CH 3 OH concentration was increased from 1 to 5%.