Flame atomic absorption spectrometry determination of the amount oflead in copper the original tailings
Received:January 19, 2015  Revised:January 19, 2015
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KeyWord:atomic absorption spectrometry; Copper original tailings; lead
     
AuthorInstitution
Zhang guanghua 北方铜业股份有限公司计量检验部 山西垣曲
Ma lijun 北方铜业股份有限公司计量检验部 山西垣曲
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Abstract:
      : copper tailings of silicon content is higher, according to this feature, this paper puts forward using saturated ammonium hydrogen fluoride, hydrochloric acid, nitric acid to dissolve sample, in 5% nitric acid medium, on the atomic absorption spectrometer, the use of air - acetylene flame to determine the lead, copper is established on the determination of lead in the original tailings method. The results show that the mass concentration of lead within 0.05 ~ 3 mu g/mL and absorbance A good linear relationship, the relative standard deviation of 0.92% to 2.39%, standard addition recovery rate from 96.0% to 106.0%, three times the blank solution method to 11 times the standard deviation of the determination of value as A detection limit, detection limit of 0.08 u g/mL.
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