[Determination of eight trace elements in the flowers of Hylocereus undatus by FAAS].
The effects of different sample digestives for the flowers of Hylocereus undatus are compared. Eight trace elements in the flowers of Hylocereus undatus were determined by flame atomic absorption spectrophotometer. The result shows that the RSD and recovery are better if the flowers of Hylocereus undatus was digested with HNO3-HClO4 (5:1) mixed acid, and the flowers of Hylocereus undatus contains many essential elements among which the contents of Fe, Mn and Zn are higher than those of Ni and Cu. Co and Cd were not determined, but Pb was determined. The experimental results showed that the detection limits were all smaller than 0.086 microg x mL(-1), the RSDs (n = 8) all smaller than 8.37%, and the addition standard recovery (ASR) (n = 8) was 79.69%-118.6% for all elements.
Wang
Xin-ping
XP
Sciences School, Foshan University, Foshan 528231, China.
D029421:Cactaceae / Q000737:chemistry*; D002104:Cadmium / Q000032:analysis; D003035:Cobalt / Q000032:analysis; D003300:Copper / Q000032:analysis; D035264:Flowers / Q000737:chemistry*; D007501:Iron / Q000032:analysis; D007854:Lead / Q000032:analysis; D008345:Manganese / Q000032:analysis; D009532:Nickel / Q000032:analysis; D017942:Nitric Acid / Q000737:chemistry; D010472:Perchlorates / Q000737:chemistry; D012015:Reference Standards; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic; D013696:Temperature; D014131:Trace Elements / Q000032:analysis* / Q000592:standards; D015032:Zinc / Q000032:analysis
D010472:Perchlorates; D014131:Trace Elements; D002104:Cadmium; D007854:Lead; D003035:Cobalt; D017942:Nitric Acid; D008345:Manganese; D003300:Copper; D009532:Nickel; D007501:Iron; D015032:Zinc