Angelo Galindo

5 Questions 2 Answers 0 Followers

Questions related from Angelo Galindo

Is there an easy way to determine the area of a raster inside a polygon/shapefile?

I have a (1) polygon/shapefile of administrative boundaries and a (2) a raster with different categories (e.g. 1, 2, 3, 4, 5,) I would like to determine the area of the raster (only category 1)...

19 October 2018 4,659 5 View

What's the usual molarity for acid wash? (Nitric acid to wash away metals in glassware)?

I'll be making use of zinc solutions and as much as possible I don't want to cross-contaminate my samples

13 April 2016 5,650 1 View

What would be the surface morphology change of Moringa oleifera seed powder (biosorbent) in these photos using a Scanning Electron Microscope?

My study involves protonating (through nitric acid) Moringa oleifera seed powder (lignocellulosic) to, theoretically, increase adsorption capacity.In literature, acidifying causes oxygen surface...

27 March 2016 2,098 3 View

What would be the proper containers for zinc solutions? Polyethylene bottles? Will zinc adhere to its walls?

My study will make use of Atomic Absorption Spectroscopy analysis and thus accuracy and precision of zinc concentration is a must.

27 March 2016 8,046 6 View

How long can you store metal solutions (specifically zinc) in bottles (polyethylene) before AAS analysis?

Will storing for more than 24 hours lead to inaccuracy of results?My concentration ranges from 20-80mg/L of zinc.My study also takes into consideration pH (as zinc speciation occurs as pH...

27 March 2016 6,124 3 View