Well plate

摘要

The present invention includes an apparatus for preparing samples for measurement by x-ray fluorescence spectrometry. The apparatus comprises a plate having one or more holes passing through the plate. The holes are covered by a film on one side of the plate. The holes are less than 500 micrometers across in one dimension where the film covers the holes. The film is translucent to x-rays. The present invention also includes an apparatus for preparing samples for measurement by x-ray fluorescence spectrometry. The apparatus comprises a plate having one or more holes passing through the plate. The holes are covered on one side of the plate by a detachable cover forming a water-tight seal against the plate. The cover is substantially free of the elements osmium, yttrium, iridium, phosphorus, zirconium, platinum, gold, niobium, mercury, thallium, molybdenum, sulfur, lead, bismuth, technetium, ruthenium, chlorine, rhodium, palladium, argon, silver, and thorium. The holes are less than about 500 micrometers across in one dimension where the cover covers the holes. The present invention also includes a method for preparing samples for measurement by x-ray fluorescence spectrometry. The method comprises providing a solution of with less than 10 micromolar solute and a volume of between about 2 microliters and about 2 milliliters. The solution is concentrated and analyzed using x-ray fluorescence spectrometry.

主权项

1. An apparatus for preparing one or more samples for measurement by X-ray fluorescence spectrometry, the apparatus comprising:
a plate having at least one hole penetrating said plate; a film covering said hole oriented normal to said film; and said hole having a diameter between 10 micrometers and two millimeters in at least one dimension parallel to said film at the location where said hole adjoins said film; and wherein said film is permanently attached to said plate; and said film has less that about 4% by weight of at least one of the elements selected from sulfur, phosphorus, and chlorine.