Use of N-(4-aminophenyl)piperidine derivatization to improve organic acid detection with supercritical fluid chromatography-mass spectrometry.

The analysis of organic acids in complex mixtures by LC-MS can often prove challenging, especially due to the poor sensitivity of negative ionization mode required for detection of these compounds in their native (i.e., underivatized or untagged) form.

Negative and positive interspecific interactions involving jellyfish polyps in marine sessile communities.

Sessile marine invertebrates on hard substrates are one of the two canonical examples of communities structured by competition, but some aspects of their dynamics remain poorly understood. Jellyfish polyps are an important but under-studied component of these communities. We determined how jellyfish polyps interact with their potential competitors in sessile marine hard-substrate communities, using a combination of experiments and modelling.

A review of two-dimensional liquid chromatography approaches using parallel column arrays in the second dimension.

Multi-dimensional liquid chromatography techniques play an important role in the analysis of complex mixtures. The keys to maximizing peak capacity in these methods are fast sampling rates and sufficient complementarity between the first- (D) and second- (D) dimension separations. One way that these criteria have been met is by using D parallel column arrays.

Assessing size-dependent cytotoxicity of boron nitride nanotubes using a novel cardiomyocyte AFM assay.

As boron nitride nanotubes (BNNTs) find increased use in numerous applications, potential adverse health effects of BNNT exposure are a growing concern. Current cytotoxicity studies on BNNTs are inconsistent and even contradictory, likely due to the lack of reference materials, standardized characterization methods and measurement protocols. New approaches, particularly with the potential to reliably relate to studies, are critically needed.