[Determination of Si, Al and other in biological samples by ICP-AES with fusion with LiBO2 after dry ashing].
An alkaline sample digestion procedure using fusion with lithium metaborate (LiBO2) after dry ashing was developed. Silicon, aluminium and other, a total of 10 elements in different kinds of biological samples, were measured by ICP-AES. The detection limit of this method was 0.15 microg x mL(-1) for Si and 0.03 microg x mL(-1) for Al. The accuracy and precision of the method were demonstrated by analyzing certified reference materials poplar leaves (GBW07604). The precision was less than 3% and the accuracy was -0.03% for Si and -3% for Al. This method was applied to the certification of a series of ten biological reference materials. The results were satisfied.
Sun
De-Zhong
DZ
National Research Center of Geoanalysis, Beijing 100037, China. sundezhong_1@yahoo.com.cn
He
Hong-Liao
HL
Wen
Hong-Li
HL
Ma
Sheng-Feng
SF
Gong
Ai-Hua
AH
Yin
Shao-Quan
SQ
D000535:Aluminum / Q000032:analysis* / Q000737:chemistry; D001881:Borates / Q000737:chemistry*; D005504:Food Analysis; D057230:Limit of Detection; D008094:Lithium / Q000737:chemistry*; D017646:Organosilicon Compounds / Q000737:chemistry; D010944:Plants / Q000737:chemistry; D012015:Reference Standards; D012825:Silicon / Q000032:analysis* / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013054:Spectrophotometry, Atomic / Q000592:standards; D013696:Temperature
D001881:Borates; D017646:Organosilicon Compounds; D012997:Solvents; D008094:Lithium; D000535:Aluminum; D012825:Silicon