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2007•Chinese Journal of Analysis LaboratoryRequires access

Spectrophotometric determination of Lead(II) in Tin with acid chrome blue K

Limin Li

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Abstract

A new spectrophotometric method for the determination of trace lead has been studied,based on the discoloration reaction between KIO4 and acid chrome blue K in H2SO4 solution with 2,2′bipyridyl as an activator.The maximum absorption wavelength is at 526 nm.The linear range of lead is 0.002～0.006 μg/mL and detection limit is 2.0×10-4 μg/mL.There are no interference from the most common ions.The method has been used to determined trace lead in tin samples with satisfactory results.

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A new spectrophotometric method for the determination of trace lead has been studied,based on the discoloration reaction between KIO4 and acid chrome blue K in H2SO4 solution with 2,2′bipyridyl as an activator.The maximum absorption wavelength is at 526 nm.The linear range of lead is 0.002～0.006 μg/mL and detection limit is 2.0×10-4 μg/mL.There are no interference from the most common ions.The method has been used to determined trace lead in tin samples with satisfactory results.

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Available abstract

A new spectrophotometric method for the determination of trace lead has been studied,based on the discoloration reaction between KIO4 and acid chrome blue K in H2SO4 solution with 2,2′bipyridyl as an activator.The maximum absorption wavelength is at 526 nm.The linear range of lead is 0.002～0.006 μg/mL and detection limit is 2.0×10-4 μg/mL.There are no interference from the most common ions.The method has been used to determined trace lead in tin samples with satisfactory results.

Key concepts: Chemistry, Tin, Detection limit, Linear range, Ion, Trace Amounts, Nuclear chemistry, Analytical Chemistry (journal)

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