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- W2000562402 abstract "In this work, a new 2-(2-oxoethyl)hydrazine carbothioamide modified silica gel (SG-OHC) sorbent was prepared and applied for preconcentration of trace mercury(II) prior to the measurement by inductively coupled plasma atomic emission spectrometry (ICP-AES). The optimization of some analytical parameters affecting the adsorption of the analyte such as acidity, shaking time, sample flow rate and volume, eluent condition, and interfering substances were investigated. At pH 3, the maximum static adsorption capacity of Hg(II) onto the SG-OHC was 37.5 mg g−1. The quantitative recovery (>95%) of Hg(II) could be obtained using 2 mL of 0.5 mol L−1 HCl and 1% CS(NH2)2 solution as eluent. Common coexisting substances did not interfere with the separation of mercury(II) under optimal conditions. The detection limit of present method was 0.10 ng mL−1, and the relative standard deviation (RSD) was lower than 4.0% (n = 8). The prepared sorbent was successfully applied for the preconcentration of trace Hg(II) in certified and water samples with satisfactory results." @default.
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- W2000562402 date "2010-10-01" @default.
- W2000562402 modified "2023-10-17" @default.
- W2000562402 title "Solid phase extraction of trace Hg(II) on silica gel modified with 2-(2-oxoethyl)hydrazine carbothioamide and determination by ICP-AES" @default.
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- W2000562402 doi "https://doi.org/10.1016/j.talanta.2010.07.076" @default.
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