[Analysis of nine kinds of elements contents in the milk powder by inductively coupled plasma-atomic emission spectrometry].
OBJECTIVE
To establish a method of determination of nine kinds of elements contents in the milk powder by inductively coupled plasma-atomic emission spectrometry (ICP-AES).


METHODS
The milk powder is analyzed by ICP-AES. At the same time, the optimum conditions of digesting and analyzing sample are chosen.


RESULTS
The method detection limit of nine kinds of elements are in the range of 0.05-50 mg/kg, the relative standard deviations are in the rang of 0.3%-4.5%, the recovery rate are in the range of 91.0%-105.8%.


CONCLUSIONS
The method has the advantage of simplicity, reacting completion, high sensitivity, wide range of linear and small distraction. The determined results are accurate and the reproducibility is good. The method is fit for the determination of micro-element and macro-element in the milk powder.
Li
Guang
G
Nanjing Center for Disease Control and Prevention, Nanjing 210003, China.
Li
Chun-ye
CY
Song
Li-jun
LJ
Li
Jian-xin
JX
D000818:Animals; D008892:Milk / Q000737:chemistry*; D011208:Powders; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014131:Trace Elements / Q000032:analysis*
D011208:Powders; D014131:Trace Elements