Simultaneous determination of Se, trace elements and major elements in Se-rich rice by dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP-MS) after microwave digestion.
A quick and accurate method was devised to determine Se, As, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Sr and Zn in Se-rich rice samples by microwave digestion and inductively coupled plasma-mass spectrometry (ICP-MS). Spectral interferences on Se were eliminated using methane as a reaction gas in the dynamic reaction cell (DRC). Rhodium was used as an internal standard to compensate for sample matrix effects. A rice-certified reference material (CRM) (GBW 10010) was used to verify the accuracy of the method. The method detection limits were 0.001-0.03 mg/kg, analyte recoveries were 85-108% and precisions (RSDs) ranged from 2.1% to 5.8%. Correlation analysis showed that the Se concentrations in the Se-rich rice samples correlated well with the Cu concentrations (r=0.53, p<0.05).
Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China. Electronic address: weiyihua08@163.com.
Yi Hua
YH
Wei
Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China.
Jin Yan
JY
Zhang
Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China.
Da Wen
DW
Zhang
Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China. Electronic address: luolinguang@126.com.
Lin Guang
LG
Luo
Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China.
Tian Hua
TH
Tu
D004063:Digestion; D013058:Mass Spectrometry; D008697:Methane / Q000737:chemistry; D008872:Microwaves; D012275:Oryza / Q000737:chemistry*; D011138:Polytetrafluoroethylene / Q000737:chemistry; D012016:Reference Values; D015203:Reproducibility of Results; D012238:Rhodium / Q000737:chemistry; D012643:Selenium / Q000032:analysis*; D013053:Spectrophotometry; D014131:Trace Elements / Q000032:analysis*
D014131:Trace Elements; D011138:Polytetrafluoroethylene; D012238:Rhodium; D012643:Selenium; D008697:Methane
Correlation analysis; DRC-ICP-MS; Major elements; Se; Se-rich rice; Trace elements