Bioavailability of cadmium and lead in cocoa: comparison of extraction procedures prior to size-exclusion fast-flow liquid chromatography with inductively coupled plasma mass spectrometric detection (SEC-ICP-MS)

A Simple and Sensitive Flow-Injection On-line Preconcentration Coupled with Hydride Generation Atomic Fluorescence Spectrometry for the Determination of Ultra-trace Lead in Water, Wine, and Rice

“…The detection limit was found to be 16 ng l -1 with the linear range of method between 0.05 and 10 μg l -1 . Compared with some reported methods for atomic spectrometric determination of lead in foods and drinks, the sensitivity of the proposed system is not only greatly improved with respect to those of conventional HG-AAS, 22,25 HG-ICP-OES 26 and ICP-MS, 27 but also superior to those preconcentration systems with FAAS, 4,8,10 ICP-AES 9 and ETAAS. 11 The effect of foreign substances Minimization of transition-metal interferences.…”

Speciation of essential and toxic elements in edible mushrooms: size‐exclusion chromatography separation with on‐line UV–inductively coupled plasma mass spectrometry detection

“…Additionally, extraction with hot water is a conventional approach used to extract organoelemental species of a wider MW range. 35,36 Generally, higher extraction efficiency was obtained with the NaOH solution than with either the HCl solution or hot water. The extraction values were in the range of 88 to 98.5%.…”

Comparative Studies Involving Transgenic and Non-Transgenic Soybean: What is Going On?

“…Finally, polar compounds can be efficiently separated using polar/hydrophilic stationary phases using normal phase aqueous chromatography (aqNPC), also called hydrophilic interaction chromatography (HILIC) [113]. Here, retention times tend to be longer as high as is the hydrophobicity of the solutes, indicating potential for small metallic complexes separation.…”