In this work, we report a 20-fold reduction in sample size for trace and ultratrace elemental determination and speciation by conventional voltammetric instrumentation, introducing the lowest amount of sample (0.5 mL) in which ultratrace detection has been performed up to now.
Owing to this problem, the predictive quality was only level D. Despite a low amount of samples excellent NIRS-models could be developed for lignin (level A).
In the enrichment of glycopeptides, HILIC is more efficient than the generally used agarose bound lectins in the nano-scale analysis because of its smaller particle size (10 µm vs 200 300 µm), which is consistent with the extremely low amount of samples from 2-DE spots.
Thus, the low amount of samples hinders the analyses in these studies and larger genome-wide association studies are required in order to identify novel SNPs associated with azoospermia.
nd, not determined because of the low amount of sample.
The FTIR of SBN1 was not recorded due to the low amount of sample available.
Identification of binding media involves several analytical problems mainly related to the very low amount of sample available and its heterogeneity, and very low content of organic media components as well as unknown state of alteration/degradation.
However, an option for increasing quality of quantification in case of low amount of sample and missing replicated samples is to divide one sample into technical replicates and use more sensitive approaches like 2D fluorescent difference gel electrophoresis (2D-DIGE).
Some spots were cut from both silver stained gels, but their identification failed due to the low amount of sample and to spare database information available for this kind of anaerobic communities.
The test was performed according to the instructions provided by the manufacturer, with the following minor modifications: due to a low amount of sample material, the diluted samples 1 10 from the ELISA were used to further dilute the samples as described by the manufacturer.
