Water sampling for major ion chemistry was performed at a proglacial hydrometric station and from subglacial outflows from May to September 2011.
Samples for major ion (Na+, K+, Ca2+, Mg2+, Cl–, SO4 2–, NO3 – and HCO3 −) analysis were collected in 500 mL polyethylene bottles.
Water samples for major ions analysis were initially filtrated through a 0.45 μm membrane filter and then collected in a pre-clean 15 ml plastic bottle, and stored at 4 °C until analysis.
In total, 24 rock samples for major element analyses, 9 rock samples for trace element analyses, and 46 rock samples for U-Pb zircon dating were collected from the four locations, the Seoseok-dae, Ipseok-dae, Gwangseok-dae, and Chotdae-bong colonnades (Tables 1 and 2 and Additional file 1: Table S1).
The analyses of the acidified samples for major (Na, K, Ca, Mg) and trace elements (Li, B, Fe, Cu, Zn, As, Rb, Sr, Mo, Cs, U, Ba) with ICP-MS at the Institute of Mineralogy and Geochemistry IMG at KIT showed a high reproducibility.
Samples for major ion concentrations were collected in plastic bottles.
Those authors concluded that RNAlater is an excellent storage agent for yeast cells and, most likely, for other cell types and tissues, to preserve the samples for major "omics" techniques and microscopic analyses (65).
The evaluation of alternative ways to select imputation reference panels thus provides an approach for making sample choices for major genotyping or sequencing studies more systematically generalizable.
Enumeration areas are the primary sampling units, clearly delineated and mapped by the census bureau in Haiti, and are used as a sampling frame for major surveys in Haiti, including the Demographic and Health Survey.
Water samples collected for major ions and Sr-isotope analyses were stored in small polyethene bottles, while for isotope analysis of H and O, the samples were stored in glass bottles.
