Chemical spot test for lead in paint and other media
First Claim
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1. A method of detecting a metal in a media which comprises the steps of:
- (a) exposing the media to a strong acid;
(b) exposing the media to a rhodizonate; and
, (c) monitoring the media for a visible color change.
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Abstract
A one-step chemical spot test for the qualitative determination of lead in lead-based paint and other media. This test is based upon the reaction of lead with sodium rhodizonate under strong acid conditions to develop an intense purple colored complex. The acid preferred is dilute hydrochloric acid. The test is performed in one step using a dropper, plastic cylinders, or like apparatus.
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Citations
22 Claims
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1. A method of detecting a metal in a media which comprises the steps of:
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(a) exposing the media to a strong acid;
(b) exposing the media to a rhodizonate; and
,(c) monitoring the media for a visible color change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of detecting a metal in a media which comprises the steps of:
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(a) abrading the media;
(b) exposing the media to a strong acid;
(c) exposing the media to a rhodizonate; and
,(d) monitoring the media for a visible color change. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification