Performance of potassium hexacyanomanganate(III) was evaluated as new reagent in generation of lead hydride (PbH4). Hexacyanomanganate(III) was stabilized in dilute sulfuric acid and mixed on-line with acidic sample solutions to affect the formation plumbane through reaction with sodium borohydride. Small amount of hexacyanomanganate(III) was sufficient for effective generation of PbH4. Cu(II) interfered, but the depressive effects were alleviated by increasing hexacyanomanganate(III) concentration to 2% m/v. No significant interferences were observed by from other transition metals and hydride forming elements. Detection limits were about 6 ppt HG-ICP-MS. The method was applied to determination of Pb in saline and biological samples.

Potassium hexacyanomanganate(III) as an additive for plumbane generation– expanding hydride generation atomic spectroscopy

245th National Meeting (2013)

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