Convenient determination of trace lead in whole blood and other fluids
First Claim
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1. A method of determining lead levels in blood, comprising:
- admixing a blood sample with an agent specifically binding lead to form a lead complex;
displacing the lead with a metal ion to form an irreversible metal ion complex; and
detecting the displaced lead and determining the lead levels in blood by electrochemical measurement.
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Abstract
The invention relates to methods of determining micromolar levels of lead ion in various fluids, including blood. Detection of lead or other heavy metal ion concentrations as low as 1 μg/dL is achieved. The methods are adaptable to the detection of low levels of lead in whole blood, employing a novel separation and release of lead ion from lead chelating agents. The disclosed methods employ isocitrate dehydrogenase-based electrodes which are particularly suited for detecting nanomolar levels of lead.
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11 Claims
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1. A method of determining lead levels in blood, comprising:
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admixing a blood sample with an agent specifically binding lead to form a lead complex; displacing the lead with a metal ion to form an irreversible metal ion complex; and detecting the displaced lead and determining the lead levels in blood by electrochemical measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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