[Determination of trace elements in the edible fungi by inductively coupled plasma atomic emission spectrometry].
In the present paper, samples were digested by high pressure digestion pots, reducing the loss of trace elements during the digestion process. The contents of trace elements in edible fungi such as Ca, Na, K, Mg, Mn, Ba, Fe, Co, Ge and Cu were determined by inductively coupled plasma atomic emission spectrometry. The relative standard deviation with high pressure digestion pots was 0.160-2.860, and that with wet method was 0.33%-3.49%, so it could be seen that the measurement precisions of the two methods were good, and the former was better. The measurement results with the two methods were checked by t-test, and the values in the range of 0.002 4-2.473 were lower than t(0.99, 9) (3.25). The measurement results showed that the two methods had no obvious differences, namely no system errors occurred. The recovery rates with high pressure digestion pots were in the range of 96.6% -103%. The method of high pressure digestion pots was suitable for the determination of trace elements in edible fungi with the advantages of being simple, rapid, sensitive, stable and accurate etc., and the results were satisfactory.
Chemistry and Life Science College, Shenyang Normal University, Shenyang 110034, China. tianpenglnu@sina.com
Peng
P
Tian
Hui
H
Zhang
Ji-Dong
JD
Duan
Zi-Jian
ZJ
Lü
Shi-Gang
SG
Xin
Shuang
S
Han
D005504:Food Analysis; D005658:Fungi / Q000737:chemistry*; D008672:Metals, Alkali / Q000032:analysis*; D008673:Metals, Alkaline Earth / Q000032:analysis*; D019216:Metals, Heavy / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000379:methods*
D008672:Metals, Alkali; D008673:Metals, Alkaline Earth; D019216:Metals, Heavy