title: [Determination of fifteen metal elements in Cynomorium songaricum by flame atomic absorption spectrophotometry (FAAS)].
abstract: A FAAS method was established for the determination of Na, K, Mg, Ca, Cu, Zn, Fe, Mn, Ni, Co, Pb, Cr, Cd, Ag and Au in Cynomorium songaricum after digestion with HNO3-HClO4 (phi 4:1) at 90-95 degrees C and at normal pressure. In this paper, the parameters in FAAS were studied. The analytical results of Na, K, Mg, Ca, Fe, Zn, Cu, Mn, Pb, Ni and Ag were 13,572.0, 14,260.0, 358.3, 168.3, 238.5, 19.4, 5.9, 3.4, 2.6, 1.3 and 0.4 microg x g(-1) respectively and Co, Cr, Cd and Au were not found in the samples. The results showed that the recovery of standard addition was 97.8%-104.5%, and the relative standard deviation (n = 9) was 0.2%-5.0%. The method is fast, simple and convenient. The results were satisfactory.
authors.affiliation: Department of Chemistry, Hexi University, Zhangye 734000, China.
authors.forename: Guo-qing
authors.initials: GQ
authors.lastname: Xue
authors.forename: Qing
authors.initials: Q
authors.lastname: Liu
authors.forename: Xue-feng
authors.initials: XF
authors.lastname: Ren
authors.forename: Yu-qi
authors.initials: YQ
authors.lastname: Han
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000032:analysis; D002118:Calcium / Q000032:analysis; D002857:Chromium / Q000032:analysis; D003035:Cobalt / Q000032:analysis; D003300:Copper / Q000032:analysis; D031482:Cynomorium / Q000737:chemistry*; D004785:Environmental Pollutants / Q000032:analysis; D006046:Gold / Q000032:analysis; D007501:Iron / Q000032:analysis; D007854:Lead / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008345:Manganese / Q000032:analysis; D008670:Metals / Q000032:analysis*; D009532:Nickel / Q000032:analysis; D011188:Potassium / Q000032:analysis; D012834:Silver / Q000032:analysis; D012964:Sodium / Q000032:analysis; D013054:Spectrophotometry, Atomic / Q000379:methods; D013324:Strontium / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis; D015032:Zinc / Q000032:analysis
chemical_list: D004785:Environmental Pollutants; D008670:Metals; D014874:Water Pollutants, Chemical; D002104:Cadmium; D002857:Chromium; D007854:Lead; D003035:Cobalt; D012834:Silver; D008345:Manganese; D006046:Gold; D003300:Copper; D009532:Nickel; D012964:Sodium; D007501:Iron; D008274:Magnesium; D015032:Zinc; D011188:Potassium; D002118:Calcium; D013324:Strontium