title: [Determination of trace Rh in organic residue by flame atomic absorption spectrophotometry].
abstract: The catalytic organic residue contained Rh was digested with HNO3 at 130 degrees C for 12 h. Trace noble metal Rh in catalytic organic residue was determined by flame atomic absorption spectrophotometry. Rh was atomized by air-acetylene flame at lamp Current of 7 mA. The methods of sample pretreatment for Rh in residue were compared in this paper. The recovery rates of this method were 95.3%-105.5% and the relative standard derivation was 0.9%. The method was applied to the analysis of some practical samples and the results obtained were satisfactory.
authors.affiliation: Basic Experiment Center of Chemistry, Dalian University of Technology, Dalian 116024, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Han
authors.forename: Fang
authors.initials: F
authors.lastname: Cheng
authors.forename: Shi-fang
authors.initials: SF
authors.lastname: Gu
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Cui
authors.forename: Guang
authors.initials: G
authors.lastname: Xiao
authors.forename: Song-yun
authors.initials: SY
authors.lastname: Xu
mesh_terms: D000114:Acetylene; D002384:Catalysis; D009930:Organic Chemicals / Q000032:analysis* / Q000737:chemistry; D012238:Rhodium / Q000032:analysis*; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D009930:Organic Chemicals; D012238:Rhodium; D000114:Acetylene