Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods

  title={Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods},
  author={Nahar Singh and Niranjan Singh and S. Tripathy and D. Soni and Khem Singh and P. Gupta},
  journal={Chemistry Central Journal},
  pages={108 - 108}
BackgroundA conventional gravimetry and electro-gravimetry study has been carried out for the precise and accurate purity determination of lead (Pb) in high purity lead stick and for preparation of reference standard. Reference materials are standards containing a known amount of an analyte and provide a reference value to determine unknown concentrations or to calibrate analytical instruments. A stock solution of approximate 2 kg has been prepared after dissolving approximate 2 g of Pb stick… Expand
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