CAJ | 학술논문

采用湿法消解处理大米样品、磷酸氢二铵为基体改进剂、石墨炉原子吸收光谱法测定大米中镉的含量，实验确定了最佳基体改进剂浓度为2%，最佳灰化温度为400℃。此方法的线性范围为0～5.0μg/L （=0.9996），加标回收率为96.1%～101.7%，RSD为2.44%～3.98%（=4）。该方法准确度和精密度高，可为宁夏大米的检测认证提供数据。
채용습법소해처리대미양품、린산경이안위기체개진제、석묵로원자흡수광보법측정대미중력적함량，실험학정료최가기체개진제농도위2%，최가회화온도위400℃。차방법적선성범위위0～5.0μg/L （=0.9996），가표회수솔위96.1%～101.7%，RSD위2.44%～3.98%（=4）。해방법준학도화정밀도고，가위저하대미적검측인증제공수거。
The wet digestion was used in processing of rice samples, ammonium dibasic phosphate was used as the substrate modifier agent and then the GF-AAS was used to measure the content of cadmium in rice. It was determined by the exper-iment that the optimal substrate modifier agent concentration should be 2% and the best ashing temperature should be 400℃. The linear range of the method was 0~5.0 μg/L( =0.999 6), the recovery of standard addition was 96.1%~101.7% and the RSD was 2.44%~3.98%( =4). The degree of accuracy and precision of this method is high and it can provide data for determination of cadmium in Ningxia rice.