A standard of pb2 for an analysis using atomic absorption

Reference no: EM13633502

A standard of Pb2+ for an analysis using atomic absorption isprepared by first dissolving 1.0390 g dried Pb(NO3)2 in distilledwater containing 1% nitric acid. the solution is brought tovolume in a Class- A 500- mL volumetric flask with uncertainty of±.20 mL. the solution is then diluted 1/10 by taking 10mL(via eppendorf pipet, tolerance ± 1.3ul) and diluting thisin 1% nitric acid to final volume of 100mL in a volumetric flaskwith a tolerance of ±0.08mL. the balance has uncertainty of±0.0002 gram.

a. Calculate the final solution of pb2+ in ppm.

b. Detemine absolute and relative uncertainties of each valueobtained in part a. select largest report results as aconcentration range.

Reference no: EM13633502

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